Official Factorio Wiki - User contributions [en]

Thruster/zh

2026-09-01T19:59:01Z

Thruster-fix: /* 单位漏打了个秒 */

{{Languages}}{{Translation verification|revisionID=217095}}
{{:Infobox:Thruster}}
{{About/Space age}}
'''{{Translation|Thruster}}'''是{{L|Space platform}}的组件之一，用于推动平台在太空中航行并前往其他星球。{{Translation|Thruster}}需要{{L|Thruster fuel}}和{{L|Thruster oxidizer}}才能运行。{{Translation|Thruster}}只能放置在太空平台的南方（正下方）边缘，且放置时其排气路径不能被任何物体阻挡。这种布局限制意味着平台只能向北方（屏幕正上方）移动，

{{Translation|Thruster}}可以通过{{L|Space platform hub}}进行设置。当设置为"自动"时，推进器会在玩家设置目的地后自动启动，并在到达目的地后自动关闭，而设置为"暂停推进"则会立即关闭所有推进器。

{{Translation|Space platform}}的速度和加速度受{{Translation|Thruster}}数量、效率和平台重量的影响。当{{Translation|Thruster fuel}}和{{Translation|Thruster oxidizer}}的储量都满时，其推进效率最低，但速度和加速度最高。而在两者的储量未满时，{{Translation|Thruster}}的效率会提高，但速度和加速度会下降。详情参见下文的[[#数据表|数据表]]。

随着{{Translation|Space platform}}的速度增加，具有破坏力的{{L|Asteroids}}会随之更频繁地出现，这意味着玩家在启程前需要预先建立适当的防御以防{{Translation|Asteroids}}撞毁{{Translation|Space platform}}，越高的推力就需要越强的防御。

== 机制概述 ==
计算{{Translation|Thruster}}性能的公式较为复杂（见[[#公式|下文]]），在此先列出一些平台设计的指南：
* 平台的宽度对最高速度（以及航行时间）的影响比其重量更大。
** 不应为增加{{Translation|Thruster}}数量而加宽平台。
* {{Translation|Thruster}}和燃料的单项增加会导致推力的边际效用递减，除非同时增加两者。
* 低速航行时所消耗的燃料总量是最少的。

=== 外形设计 ===
平台的阻力限制了在一定推力下其能达到的最高速度，阻力主要由平台的宽度（单位为格）决定，与平台总重量的关系相对较小。
<gallery mode=nolines class=center widths=400px heights=350px>
File:Speed-vs-width.png|随着平台宽度的增加，其最高速度会急剧下降。
File:Speed-vs-mass.png|当平台重量增加100倍时，其最高速度仅下降30%。
</gallery>

航行时间也会受到平台重量的影响（几个百分点），因为大重量的平台需要更长时间以达到最高速度，但总体来说航程的大部分时间都是以最高速度完成的，因此航行时间主要由平台宽度决定。综上所述，用于星际航行的平台应当尽量设计为长而窄的火箭状外形。

对于一定宽度的平台，应该尽可能在不增加其宽度的前提下增加{{Translation|Thruster}}的安装数量。这是因为平台宽度的增加会抵消{{Translation|Thruster}}数量增加所产生的推力。在一定的燃料消耗量之下，加宽平台以安装更多{{Translation|Thruster}}反而会使平台的飞行速度变得更慢，如下图所示：

[[File:Speed-vs-thrusters-and-width.png|500px|center]]

例如，对于一座宽度为32格的平台，在使用8台{{Translation|Thruster}}时可以达到最高速度，因为每台{{Translation|Thruster}}的宽度为4格。需要注意的是，如果通过某种方式在不增加平台宽度的前提下垂直叠放更多数量的推进器，则不受此限制。

=== 推力的边际效用递减 ===
由于{{Translation|Thruster}}在低燃料储备时的效率更高，单独增加燃料量或{{Translation|Thruster}}数量来增加推力的效用是逐渐减少的。如要获得推力的线性增长，上述两者需要按一定的比例增加，

<gallery mode=nolines class=center widths=400px heights=350px>
File:Thrust-vs-thrusters.png|当燃料量不变时，增加{{Translation|Thruster}}数量可以同时增加推力和速度，但其边际效益明显递减。
File:Thrust-vs-fuel.png|当{{Translation|Thruster}}数量不变时，增加燃料量可以同时提高推力和速度，但每百分比燃料增加的收益是递减的。
File:Thrust-vs-fully-fueled-thrusters.png|当每台{{Translation|Thruster}}都加满燃料时，推力与{{Translation|Thruster}}数量线性相关，而速度由于受阻力影响，增加{{Translation|Thruster}}数量的收益是递减的。
</gallery>

=== 节约燃料 ===
如果在航行过程中无法制造或补充燃料，需要完全依靠{{Translation|Space platform}}上储存的燃料完成整个航程，就需要尽可能减少指定航程中的总燃料消耗量。通常情况下，航行速度越慢，总燃料消耗量越少，因为{{Translation|Thruster}}效率的提升足以支持更长的航行时间。

<gallery mode=nolines class=center widths=400px heights=350px>
File:Fuel-volume-vs-speed.png|对于典型的{{Translation|Space platform}}，总燃料消耗量随燃料流量的增加线性上升，因此当燃料流量最小时，燃料消耗量也最少，同时航行时间最长。
File:Fuel-volume-vs-speed-wide.png|对于宽阔的低推力平台，以最低速度航行比略快的速度更能减少总燃料消耗量。
File:Fuel-volume-vs-speed-heavy.png|对于重量极高的平台，在燃料流量较低（但并非最低）处有一个不明显的总燃料消耗最低点。
</gallery>

例外的情况是{{Translation|Thruster}}数量较少且阻力较大的{{Translation|Space platform}}，或非常重的{{Translation|Space platform}}。对于这些平台，以较低而非最低速度航行更能节约燃料总消耗量。尽管如此，上述情况下最佳的燃料加注速率通常仍然为15-25%。

== 详情 ==

=== 数据表 ===
表内的"相对推力"和"相对流体消耗量"是对某一{{L|Quality}}推进器推力/流体消耗量值域的百分比，例如，50%相对推力表示当前推力等于最小推力和最大推力的中间值。对于{{Translation|Normal}}品质的推进器而言，50%相对推力等于55.95兆牛顿，而对于{{Translation|Legendary}}品质的推进器而言则是139.45兆牛顿，增加了150%。

{| class="wikitable"
|-
! 流体储量 !! 效率 !! 相对推力 !! 相对流体消耗量 !! colspan="5" | 流体消耗量（单位/秒）
|-
! colspan="4"| !! [[File:quality_normal.png|15px]] {{Translation|Normal}} !! [[File:quality_uncommon.png|15px]] {{Translation|Uncommon}} !! [[File:quality_rare.png|15px]] {{Translation|Rare}} !! [[File:quality_epic.png|15px]] {{Translation|Epic}} !! [[File:quality_legendary.png|15px]] {{Translation|Legendary}}
|-
| 0% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 5% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 10% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 15% || 97% || 22% || 24% || 14.14 || 18.39 || 22.63 || 26.87 || 36.00
|-
| 20% || 93% || 34% || 37% || 22.29 || 28.97 || 35.66 || 42.34 || 55.50
|-
| 25% || 90% || 44% || 51% || 30.43 || 39.56 || 48.69 || 57.81 || 76.50
|-
| 30% || 86% || 54% || 64% || 38.57 || 50.14 || 61.71 || 73.29 || 96.00
|-
| 35% || 83% || 63% || 78% || 46.71 || 60.73 || 74.74 || 88.76 || 117.00
|-
| 40% || 79% || 71% || 91% || 54.86 || 71.31 || 87.77 || 104.23 || 136.50
|-
| 45% || 76% || 78% || 105% || 63.00 || 81.90 || 100.80 || 119.70 || 157.50
|-
| 50% || 72% || 84% || 119% || 71.14 || 92.49 || 113.83 || 135.17 || 178.50
|-
| 55% || 69% || 89% || 132% || 79.29 || 103.07 || 126.86 || 150.64 || 198.00
|-
| 60% || 65% || 93% || 146% || 87.43 || 113.66 || 139.89 || 166.11 || 219.00
|-
| 65% || 62% || 96% || 159% || 95.57 || 124.24 || 152.91 || 181.59 || 238.50
|-
| 70% || 58% || 98% || 173% || 103.71 || 134.83 || 165.94 || 197.06 || 259.50
|-
| 75% || 55% || 100% || 186% || 111.86 || 145.41 || 178.97 || 212.53 || 279.00
|-
| 80% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 85% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 90% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 95% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 100% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|}

=== 公式 ===
<math>I=F\Delta t</math> 是每刻的冲量,一刻为 <math>\Delta t=1/60\text{ s}</math>.

<math>I_{net} = I_{thrust} + I_{drag}</math>

<math>\Delta v_{net} = \frac{I_{net}}{m}</math> - 每刻的速度变化。

<math>I_{drag}\ =-\frac{wv\left(v+60\right)}{4800}-\frac{\left(I_{thrust}m\right)}{m+10000}\ -10</math>

其中：
* ''w'' - 平台宽度，单位为格
* ''m'' - 平台重量，单位为吨
* ''v'' - 速度参数，单位为千米/秒（km/s），数值不能小于零。平台在航程前半段的实际速度为v-10，在后半段为v+10。
* <math>I_{thrust}</math> - 每刻推力造成的冲量，单位为兆牛顿秒（<math>\text{MN}\cdot \text{s}</math>）。举个例子，一个普通品质的推进器在最大推力时，每刻造成冲量：<math>I_{thrust}=F_{thrust}\Delta t=6100\text{ MN}\times 1/60\text{ s}=101.667\text{ MN}\cdot \text{s}</math>。
* <math>I_{drag}</math> - 每刻阻力造成的冲量，单位为兆牛顿秒（<math>\text{MN}\cdot \text{s}</math>）。

如上述公式所示，阻力与速度的评分成正比，与真实世界中穿过低密度气体的情况一样。当阻力等于推力时，加速度为零，平台达到其最高速度。另一个重要细节是，影响阻力和最高速度的决定性因素不是平台的重量，而是其宽度。虽然重量仍是影响平台达到最高速度的因素之一，但公式中阻力的第二项对于普通平台而言可以忽略不计，此项的目的是通过有效削减推力来惩罚特别重的平台。例如，对于1000吨重的平台，其推力会损失10%。

代入以上公式，可得：
<math>v_{max}=10\sqrt{\frac{\frac{480000I_{thrust}}{m+10000}-480}{w}+9}-30</math>

实际的最大速度会在上述结果的基础上加减10.

单台{{Translation|Thruster}}产生的推力（单位MN）在游戏内置的工厂百科中有详细描述。多台{{Translation|Thruster}}的推力会以加算叠加。

举个例子，对于一个有4个处于最大推力的传奇品质推进器的太空平台（<math>I_{thrust}=4\times 15.3\times 1000\text{ MN}\times 1/60\text{ s}=1020\text{ MN}\cdot \text{s}</math>），其宽度为17格（<math>w=17</math>），其质量为1002.8吨（<math>m=1002.8\text{ t}</math>）。则在从新地星到祝融星的航程上时，前半段（<math>[0\text{ km},7500\text{ km}]</math>）最高速度为：

<math>v_{max,first}=10\sqrt{\frac{\frac{480000\times 1020}{1002.8+10000}-480}{17}+9}-30-10=469.73\text{ km}/\text{s}</math>

后半段（<math>[7500\text{ km},15000\text{ km}]</math>）最高速度为：

<math>v_{max,second}=(v_{max,first}+10)+10=489.73\text{ km}/\text{s}</math>

== 你知道吗 ==
* {{Translation|Thruster}}尾焰的颜色会随着其中燃料和氧化剂的储量变化，当燃料不足时它会变为蓝色，而氧化剂不足时则会变为红色。
* {{Translation|Thruster}}排气路径的长度为82格，排气路径中不能放置建筑，也就是说{{Translation|Thruster}}占用的总面积为4×90格。不过玩家可以在路径末端直接放置建筑。

== 图集 ==
<gallery widths=400px heights=200px>
File:Thruster Flame Color.png|当燃料储量高于氧化剂，尾焰变为红色（左）；当氧化剂储量高于燃料，尾焰变为蓝色（右）。
File:Thrusters in Map View.png|推进器尾焰会在缩小的远程视图中展示。
</gallery>

== 更新历史 ==
{{history|2.0.7|
* 加入{{L|Space Age}}{{SA}}扩展包。
}}

{{SpaceNav}}

Thruster/zh

2026-09-01T19:57:06Z

Thruster-fix: /* 由于https://forums.factorio.com/120393的公式修正 */

{{Languages}}{{Translation verification|revisionID=217095}}
{{:Infobox:Thruster}}
{{About/Space age}}
'''{{Translation|Thruster}}'''是{{L|Space platform}}的组件之一，用于推动平台在太空中航行并前往其他星球。{{Translation|Thruster}}需要{{L|Thruster fuel}}和{{L|Thruster oxidizer}}才能运行。{{Translation|Thruster}}只能放置在太空平台的南方（正下方）边缘，且放置时其排气路径不能被任何物体阻挡。这种布局限制意味着平台只能向北方（屏幕正上方）移动，

{{Translation|Thruster}}可以通过{{L|Space platform hub}}进行设置。当设置为"自动"时，推进器会在玩家设置目的地后自动启动，并在到达目的地后自动关闭，而设置为"暂停推进"则会立即关闭所有推进器。

{{Translation|Space platform}}的速度和加速度受{{Translation|Thruster}}数量、效率和平台重量的影响。当{{Translation|Thruster fuel}}和{{Translation|Thruster oxidizer}}的储量都满时，其推进效率最低，但速度和加速度最高。而在两者的储量未满时，{{Translation|Thruster}}的效率会提高，但速度和加速度会下降。详情参见下文的[[#数据表|数据表]]。

随着{{Translation|Space platform}}的速度增加，具有破坏力的{{L|Asteroids}}会随之更频繁地出现，这意味着玩家在启程前需要预先建立适当的防御以防{{Translation|Asteroids}}撞毁{{Translation|Space platform}}，越高的推力就需要越强的防御。

== 机制概述 ==
计算{{Translation|Thruster}}性能的公式较为复杂（见[[#公式|下文]]），在此先列出一些平台设计的指南：
* 平台的宽度对最高速度（以及航行时间）的影响比其重量更大。
** 不应为增加{{Translation|Thruster}}数量而加宽平台。
* {{Translation|Thruster}}和燃料的单项增加会导致推力的边际效用递减，除非同时增加两者。
* 低速航行时所消耗的燃料总量是最少的。

=== 外形设计 ===
平台的阻力限制了在一定推力下其能达到的最高速度，阻力主要由平台的宽度（单位为格）决定，与平台总重量的关系相对较小。
<gallery mode=nolines class=center widths=400px heights=350px>
File:Speed-vs-width.png|随着平台宽度的增加，其最高速度会急剧下降。
File:Speed-vs-mass.png|当平台重量增加100倍时，其最高速度仅下降30%。
</gallery>

航行时间也会受到平台重量的影响（几个百分点），因为大重量的平台需要更长时间以达到最高速度，但总体来说航程的大部分时间都是以最高速度完成的，因此航行时间主要由平台宽度决定。综上所述，用于星际航行的平台应当尽量设计为长而窄的火箭状外形。

对于一定宽度的平台，应该尽可能在不增加其宽度的前提下增加{{Translation|Thruster}}的安装数量。这是因为平台宽度的增加会抵消{{Translation|Thruster}}数量增加所产生的推力。在一定的燃料消耗量之下，加宽平台以安装更多{{Translation|Thruster}}反而会使平台的飞行速度变得更慢，如下图所示：

[[File:Speed-vs-thrusters-and-width.png|500px|center]]

例如，对于一座宽度为32格的平台，在使用8台{{Translation|Thruster}}时可以达到最高速度，因为每台{{Translation|Thruster}}的宽度为4格。需要注意的是，如果通过某种方式在不增加平台宽度的前提下垂直叠放更多数量的推进器，则不受此限制。

=== 推力的边际效用递减 ===
由于{{Translation|Thruster}}在低燃料储备时的效率更高，单独增加燃料量或{{Translation|Thruster}}数量来增加推力的效用是逐渐减少的。如要获得推力的线性增长，上述两者需要按一定的比例增加，

<gallery mode=nolines class=center widths=400px heights=350px>
File:Thrust-vs-thrusters.png|当燃料量不变时，增加{{Translation|Thruster}}数量可以同时增加推力和速度，但其边际效益明显递减。
File:Thrust-vs-fuel.png|当{{Translation|Thruster}}数量不变时，增加燃料量可以同时提高推力和速度，但每百分比燃料增加的收益是递减的。
File:Thrust-vs-fully-fueled-thrusters.png|当每台{{Translation|Thruster}}都加满燃料时，推力与{{Translation|Thruster}}数量线性相关，而速度由于受阻力影响，增加{{Translation|Thruster}}数量的收益是递减的。
</gallery>

=== 节约燃料 ===
如果在航行过程中无法制造或补充燃料，需要完全依靠{{Translation|Space platform}}上储存的燃料完成整个航程，就需要尽可能减少指定航程中的总燃料消耗量。通常情况下，航行速度越慢，总燃料消耗量越少，因为{{Translation|Thruster}}效率的提升足以支持更长的航行时间。

<gallery mode=nolines class=center widths=400px heights=350px>
File:Fuel-volume-vs-speed.png|对于典型的{{Translation|Space platform}}，总燃料消耗量随燃料流量的增加线性上升，因此当燃料流量最小时，燃料消耗量也最少，同时航行时间最长。
File:Fuel-volume-vs-speed-wide.png|对于宽阔的低推力平台，以最低速度航行比略快的速度更能减少总燃料消耗量。
File:Fuel-volume-vs-speed-heavy.png|对于重量极高的平台，在燃料流量较低（但并非最低）处有一个不明显的总燃料消耗最低点。
</gallery>

例外的情况是{{Translation|Thruster}}数量较少且阻力较大的{{Translation|Space platform}}，或非常重的{{Translation|Space platform}}。对于这些平台，以较低而非最低速度航行更能节约燃料总消耗量。尽管如此，上述情况下最佳的燃料加注速率通常仍然为15-25%。

== 详情 ==

=== 数据表 ===
表内的"相对推力"和"相对流体消耗量"是对某一{{L|Quality}}推进器推力/流体消耗量值域的百分比，例如，50%相对推力表示当前推力等于最小推力和最大推力的中间值。对于{{Translation|Normal}}品质的推进器而言，50%相对推力等于55.95兆牛顿，而对于{{Translation|Legendary}}品质的推进器而言则是139.45兆牛顿，增加了150%。

{| class="wikitable"
|-
! 流体储量 !! 效率 !! 相对推力 !! 相对流体消耗量 !! colspan="5" | 流体消耗量（单位/秒）
|-
! colspan="4"| !! [[File:quality_normal.png|15px]] {{Translation|Normal}} !! [[File:quality_uncommon.png|15px]] {{Translation|Uncommon}} !! [[File:quality_rare.png|15px]] {{Translation|Rare}} !! [[File:quality_epic.png|15px]] {{Translation|Epic}} !! [[File:quality_legendary.png|15px]] {{Translation|Legendary}}
|-
| 0% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 5% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 10% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 15% || 97% || 22% || 24% || 14.14 || 18.39 || 22.63 || 26.87 || 36.00
|-
| 20% || 93% || 34% || 37% || 22.29 || 28.97 || 35.66 || 42.34 || 55.50
|-
| 25% || 90% || 44% || 51% || 30.43 || 39.56 || 48.69 || 57.81 || 76.50
|-
| 30% || 86% || 54% || 64% || 38.57 || 50.14 || 61.71 || 73.29 || 96.00
|-
| 35% || 83% || 63% || 78% || 46.71 || 60.73 || 74.74 || 88.76 || 117.00
|-
| 40% || 79% || 71% || 91% || 54.86 || 71.31 || 87.77 || 104.23 || 136.50
|-
| 45% || 76% || 78% || 105% || 63.00 || 81.90 || 100.80 || 119.70 || 157.50
|-
| 50% || 72% || 84% || 119% || 71.14 || 92.49 || 113.83 || 135.17 || 178.50
|-
| 55% || 69% || 89% || 132% || 79.29 || 103.07 || 126.86 || 150.64 || 198.00
|-
| 60% || 65% || 93% || 146% || 87.43 || 113.66 || 139.89 || 166.11 || 219.00
|-
| 65% || 62% || 96% || 159% || 95.57 || 124.24 || 152.91 || 181.59 || 238.50
|-
| 70% || 58% || 98% || 173% || 103.71 || 134.83 || 165.94 || 197.06 || 259.50
|-
| 75% || 55% || 100% || 186% || 111.86 || 145.41 || 178.97 || 212.53 || 279.00
|-
| 80% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 85% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 90% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 95% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 100% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|}

=== 公式 ===
<math>I=F\Delta t</math> 是每刻的冲量,一刻为 <math>\Delta t=1/60\text{ s}</math>.

<math>I_{net} = I_{thrust} + I_{drag}</math>

<math>\Delta v_{net} = \frac{I_{net}}{m}</math> - 每刻的速度变化。

<math>I_{drag}\ =-\frac{wv\left(v+60\right)}{4800}-\frac{\left(I_{thrust}m\right)}{m+10000}\ -10</math>

其中：
* ''w'' - 平台宽度，单位为格
* ''m'' - 平台重量，单位为吨
* ''v'' - 速度参数，单位为千米/秒（km/s），数值不能小于零。平台在航程前半段的实际速度为v-10，在后半段为v+10。
* <math>I_{thrust}</math> - 每刻推力造成的冲量，单位为兆牛顿秒（<math>\text{MN}\cdot \text{s}</math>）。举个例子，一个普通品质的推进器在最大推力时，每刻造成冲量：<math>I_{thrust}=F_{thrust}\Delta t=6100\text{ MN}\times 1/60\text{ s}=101.667\text{ MN}\cdot \text{s}</math>。
* <math>I_{drag}</math> - 每刻阻力造成的冲量，单位为兆牛顿（<math>\text{MN}\cdot \text{s}</math>）。

如上述公式所示，阻力与速度的评分成正比，与真实世界中穿过低密度气体的情况一样。当阻力等于推力时，加速度为零，平台达到其最高速度。另一个重要细节是，影响阻力和最高速度的决定性因素不是平台的重量，而是其宽度。虽然重量仍是影响平台达到最高速度的因素之一，但公式中阻力的第二项对于普通平台而言可以忽略不计，此项的目的是通过有效削减推力来惩罚特别重的平台。例如，对于1000吨重的平台，其推力会损失10%。

代入以上公式，可得：
<math>v_{max}=10\sqrt{\frac{\frac{480000I_{thrust}}{m+10000}-480}{w}+9}-30</math>

实际的最大速度会在上述结果的基础上加减10.

单台{{Translation|Thruster}}产生的推力（单位MN）在游戏内置的工厂百科中有详细描述。多台{{Translation|Thruster}}的推力会以加算叠加。

举个例子，对于一个有4个处于最大推力的传奇品质推进器的太空平台（<math>I_{thrust}=4\times 15.3\times 1000\text{ MN}\times 1/60\text{ s}=1020\text{ MN}\cdot \text{s}</math>），其宽度为17格（<math>w=17</math>），其质量为1002.8吨（<math>m=1002.8\text{ t}</math>）。则在从新地星到祝融星的航程上时，前半段（<math>[0\text{ km},7500\text{ km}]</math>）最高速度为：

<math>v_{max,first}=10\sqrt{\frac{\frac{480000\times 1020}{1002.8+10000}-480}{17}+9}-30-10=469.73\text{ km}/\text{s}</math>

后半段（<math>[7500\text{ km},15000\text{ km}]</math>）最高速度为：

<math>v_{max,second}=(v_{max,first}+10)+10=489.73\text{ km}/\text{s}</math>

== 你知道吗 ==
* {{Translation|Thruster}}尾焰的颜色会随着其中燃料和氧化剂的储量变化，当燃料不足时它会变为蓝色，而氧化剂不足时则会变为红色。
* {{Translation|Thruster}}排气路径的长度为82格，排气路径中不能放置建筑，也就是说{{Translation|Thruster}}占用的总面积为4×90格。不过玩家可以在路径末端直接放置建筑。

== 图集 ==
<gallery widths=400px heights=200px>
File:Thruster Flame Color.png|当燃料储量高于氧化剂，尾焰变为红色（左）；当氧化剂储量高于燃料，尾焰变为蓝色（右）。
File:Thrusters in Map View.png|推进器尾焰会在缩小的远程视图中展示。
</gallery>

== 更新历史 ==
{{history|2.0.7|
* 加入{{L|Space Age}}{{SA}}扩展包。
}}

{{SpaceNav}}

Thruster

2026-09-01T19:48:39Z

Thruster-fix: /* typo fix */

{{Languages}}
{{:Infobox:Thruster}}
{{About/Space age}}
'''Thrusters''' are components of [[space platform]]s that propel the platforms through space, and to other planets. Thrusters require both [[thruster fuel]] and [[thruster oxidizer]] to function. Thrusters can only be built on the south edge of a space platform, with nothing directly south in the path of their exhaust. This placement means space platforms always travel north toward the top of the screen.

Thrusters are operated via the [[space platform hub]]. When a destination is set and the switch set to "Automatic," thrusters turn on and move the platform toward its destination. They turn off by themselves when the destination is reached. Moving the switch back to "Paused thrust" will turn all thrusters off immediately.

Speed and acceleration are affected by the number of thrusters, their efficiency, and the mass of the platform. Thrusters are at their least efficient when they have full reserves of both fuel and oxidizer, but produce higher speed and acceleration. Partly empty reserves cause them to work more efficiently, as noted in the table below, at the expense of speed/acceleration.

Depending on speed, damaging [[asteroids]] are encountered in greater numbers. This means that defenses should be built before turning on the thrusters, and high thrust requires stronger defense.

== General principles ==
The equations behind thruster performance are a bit complex (see [[#Formulas|below]]), so here are some guidelines for platform design:

* Platform width is far more important than mass in determining top speed (and therefore travel time).
** Adding more thrusters is not worthwhile if wider platform is required.
* Thrust has diminishing returns in either thrusters or fuel, unless both of them are added.
* Minimum total fuel volume is achieved at low speeds.

=== Shape design ===
Platform drag, which limits the top speed achievable with a given thrust, is strongly dependent on the width of the platform (in tiles) and much less dependent on the total mass of the platform.

<gallery mode=nolines class=center widths=400px heights=350px>
File:Speed-vs-width.png|Top speed drops off precipitously as width of the platform increases.|alt=Graph of maximum speed (percent of value at width 10) versus platform width from 10 to 100 tiles, showing a steep drop: speed falls to about half by width 40 and below one-third by width 100.
File:Speed-vs-mass.png|Top speed reduces by only 30 percent with a hundredfold increase in mass.|alt=Graph of maximum speed (percent of value at mass 100) versus platform mass from 100 to 10,000 tons, showing a gentle decline: speed stays near 100% at low mass and is still around 70% at 10,000 tons.
</gallery>

Travel time is also slightly affected by mass (a few percent) due to the longer time taken to get up to maximum speed, but most of the journey is done at top speed and so travel time is dominated by width. This encourages long, narrow rocket-like platform designs for interplanetary travel.

When considering how many thrusters to install on a platform of a certain width, the optimal number of thrusters is as many as will fit without making the platform wider. This is because the additional drag from the extra width cancels out the additional thrust from the extra thrusters. For a fixed fuelling rate, making the platform wider to add more thrusters actually makes it slower.

[[File:Speed-vs-thrusters-and-width.png|500px|center|alt=Graph of maximum speed versus number of thrusters, normalized to 100% at one thruster, for a platform that widens when more than 8 thrusters are added. One curve (fixed total fuel) rises to a peak at eight thrusters and then falls, while the other (full fuel per thruster) rises quickly and then flattens after 8 thrusters, showing that once width must increase, extra thrusters give diminishing or negative returns.|Once adding thrusters forces the platform to become wider, extra engines give diminishing returns, and with fixed fuel can even reduce top speed.]]

For example, for a platform with a width of 32 tiles, the maximum speed is attained with 8 thrusters since each thruster is 4 tiles wide. Note that this does not apply if more thrusters can be added without increasing the width of the platform by stacking multiple thrusters vertically.

=== Marginal diminishing effect of thrust ===
Because thrusters increase efficiency with lower fuel, thrust can be increased by adding either fuel or thrusters alone, but with diminishing returns. To get linear gains, both of them need to be increased proportionally.

<gallery mode=nolines class=center widths=400px heights=350px>
File:Thrust-vs-thrusters.png|alt=Graph showing total thrust and maximum speed versus number of thrusters, both scaled to 100% at one thruster. Both curves rise quickly at first and then flatten, showing diminishing gains as more thrusters are added.|Adding thrusters at a fixed fuel rate increases both thrust and speed, but with strong diminishing returns.
File:Thrust-vs-fuel.png|thumb|alt=graph showing total thrust and maximum speed versus fuel rate (in percent), both scaled to 100% at full fuel. Both curves rise steeply at low fuel and gradually level off toward full fuel.|Increasing fuel to a fixed number of thrusters raises thrust and speed, but each extra percent of fuel gives a smaller gain than the last.
File:Thrust-vs-fully-fueled-thrusters.png|thumb|alt=Graph showing total thrust and maximum speed versus number of thrusters, both scaled to 100% at one thruster. Thrust rises as a straight line, while speed rises more slowly and curves downward, indicating slowly diminishing returns.|With full fuel per thruster, thrust scales linearly with thruster count, while speed increases with some diminishing returns due to drag.
</gallery>

=== Fuel saving ===
If no fuel is replenished or manufactured during the flight, but instead the whole journey is completed relying on pre-stored fuel on board, it is necessary to minimize the total fuel volume consumption for a given trip. In general the slower the flight speed, the less the total fuel consumption, as the greater efficiency of the thrusters more than cancels out the longer travel time.

<gallery mode=nolines class=center widths=400px heights=350px>
File:Fuel-volume-vs-speed.png|thumb|alt=Graph showing normalised travel time and normalised fuel used versus total fuel flow. Travel time drops rapidly as fuel flow increases, while fuel used rises steadily, indicating that minimum fuel consumption occurs at the lowest fuel setting.|For a typical platform, total fuel used increases steadily with fuel flow, so the least fuel is consumed at the lowest throttle, even though travel time is longest.
File:Fuel-volume-vs-speed-wide.png|thumb|alt=Graph of normalised travel time and fuel used versus fuel flow for a wide, single-thruster platform. Travel time falls with increasing fuel, while total fuel used has a minimum at 20% throttle.|On a wide, low-thrust platform, the slowest speed is so slow that it takes less fuel overall to go slightly faster.
File:Fuel-volume-vs-speed-heavy.png|thumb|alt=Graph of normalised travel time and fuel used versus fuel flow for a very heavy platform. Travel time falls with increasing fuel, while total fuel used shows a slight dip at 15% throttle before rising, indicating an optimum near minimum throttle.|On an extremely heavy platform, total fuel used also has a shallow minimum at low, but not minimum throttle.
</gallery>

The exceptions are for platforms with few thrusters and a lot of drag, or very heavy platforms, where the slowest speed is so slow that it takes less fuel overall to go slightly faster. The optimal fuelling rate in these cases is still generally 15-25% though.

== Details ==

=== Datasheet ===
The "Relative thrust" and "Relative fluid consumption" is the percentage for the range of a thruster of that [[quality]]. 50% relative thrust is halfway between the minimum thrust and the maximum thrust. For a base quality thruster, 50% is 55.95 MN, while for a legendary thruster, it is 139.45 MN, a 150% increase.

{| class="wikitable"
|-
! Filled fluid reserve !! Efficiency !! Relative thrust !! Relative fluid consumption !! colspan="5" | Fluid consumption (units/s)
|-
! colspan="4"| !! [[File:quality_normal.png|15px]] Normal !! [[File:quality_uncommon.png|15px]] Uncommon !! [[File:quality_rare.png|15px]] Rare !! [[File:quality_epic.png|15px]] Epic !! [[File:quality_legendary.png|15px]] Legendary
|-
| 0% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 5% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 10% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 15% || 97% || 22% || 24% || 14.14 || 18.39 || 22.63 || 26.87 || 36.00
|-
| 20% || 93% || 34% || 37% || 22.29 || 28.97 || 35.66 || 42.34 || 55.50
|-
| 25% || 90% || 44% || 51% || 30.43 || 39.56 || 48.69 || 57.81 || 76.50
|-
| 30% || 86% || 54% || 64% || 38.57 || 50.14 || 61.71 || 73.29 || 96.00
|-
| 35% || 83% || 63% || 78% || 46.71 || 60.73 || 74.74 || 88.76 || 117.00
|-
| 40% || 79% || 71% || 91% || 54.86 || 71.31 || 87.77 || 104.23 || 136.50
|-
| 45% || 76% || 78% || 105% || 63.00 || 81.90 || 100.80 || 119.70 || 157.50
|-
| 50% || 72% || 84% || 119% || 71.14 || 92.49 || 113.83 || 135.17 || 178.50
|-
| 55% || 69% || 89% || 132% || 79.29 || 103.07 || 126.86 || 150.64 || 198.00
|-
| 60% || 65% || 93% || 146% || 87.43 || 113.66 || 139.89 || 166.11 || 219.00
|-
| 65% || 62% || 96% || 159% || 95.57 || 124.24 || 152.91 || 181.59 || 238.50
|-
| 70% || 58% || 98% || 173% || 103.71 || 134.83 || 165.94 || 197.06 || 259.50
|-
| 75% || 55% || 100% || 186% || 111.86 || 145.41 || 178.97 || 212.53 || 279.00
|-
| 80% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 85% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 90% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 95% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 100% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|}

=== Formulas ===

<math>I=F\Delta t</math> is impulse per tick, <math>\Delta t=1/60\text{ s}</math>.

<math>I_{net} = I_{thrust} + I_{drag}</math>

<math>\Delta v_{net} = \frac{I_{net}}{m}</math> - Change of speed per tick.

<math>I_{drag}\ =-\frac{wv\left(v+60\right)}{4800}-\frac{\left(I_{thrust}m\right)}{m+10000}\ -10</math>

where:
* ''w'' - width of a platform, in tiles
* ''m'' - mass of a platform, in tons
* ''v'' - speed parameter, in km/s, can't be below zero. Actual current speed of a platform is v-10 in first half and v+10 in the second half of a trip.
* <math>I_{thrust}</math> - impulse per tick due to thrust, in<math>\text{ MN}\cdot \text{s}</math>. For example, a normal-quality thruster at maximum thrust produces an impulse per tick: <math>I_{thrust}=F_{thrust}\Delta t=6100\text{ MN}\times 1/60\text{ s}=101.667\text{ MN}\cdot \text{s}</math>.

As formulas above, the drag increases quadratically with velocity, like in real world when moving through low density gas. When drag becomes equal to thrust force, acceleration stops, a platform hits its top speed.
Another important detail is that drag hence top speed depends not on the mass of a platform, but its width. Mass is still a factor of how fast the top speed can be reached though.
The second term of drag is negligible for ordinary platforms and exist to punish extra massive platforms by effectively cutting a piece of thrust force. For a platform of 1000 tons 10% of thrust force is lost.

That formulas combined give
<math>v_{max}=10\sqrt{\frac{\frac{480000I_{thrust}}{m+10000}-480}{w}+9}-30</math>

plus/minus 10 for actual maximum speed.

The amount of thrust force in MN created by a single thruster is described well in in-game wiki. Multiple sources of thrust stack additively.

For example, consider a platform with 4 legendary-quality thrusters at maximum thrust (<math>I_{thrust}=4\times 15.3\times 1000\text{ MN}\times 1/60\text{ s}=1020\text{ MN}\cdot \text{s}</math>). The width of the platform is 17 tiles (<math>w=17</math>). The mass of the platform is 1002.8 tons (<math>m=1002.8\text{ t}</math>).
On the trip from Nauvis to Vulcanus, the maximum speed in the first half of the trip (<math>[0\text{ km},7500\text{ km}]</math>) is:

<math>v_{max,first}=10\sqrt{\frac{\frac{480000\times 1020}{1002.8+10000}-480}{17}+9}-30-10=469.73\text{ km}/\text{s}</math>

The maximum speed in the second half of the trip (<math>[7500\text{ km},15000\text{ km}]</math>) is:

<math>v_{max,second}=(v_{max,first}+10)+10=489.73\text{ km}/\text{s}</math>

== Trivia ==
* The color of the thruster trail changes depending on the amount of fuel and oxidizer in the thruster, becoming blue when fuel is low or red when oxidizer is low.
* The thruster exhaust trail is 82 tiles long. Structures cannot be placed in the exhaust trail. This means that the total dimensions where the thruster blocks placement of other structures is 4×90 tiles. However, structures can be placed directly behind the end of the trail.

== Gallery ==
<gallery widths=400px heights=200px>
File:Thruster Flame Color.png|Thruster trail turns red when fuel amount is higher than oxidizer (left) and blue when oxidizer is higher (right)
File:Thrusters in Map View.png|Thruster trails are visible on the zoomed-out map view
</gallery>

== History ==
{{History|2.1.7|
* Tooltip Thrust display values multiplied by 60 [https://forums.factorio.com/120393]
}}

{{SpaceNav}}

Thruster

2026-09-01T19:41:31Z

Thruster-fix: /* formulas fix due to https://forums.factorio.com/120393 */

{{Languages}}
{{:Infobox:Thruster}}
{{About/Space age}}
'''Thrusters''' are components of [[space platform]]s that propel the platforms through space, and to other planets. Thrusters require both [[thruster fuel]] and [[thruster oxidizer]] to function. Thrusters can only be built on the south edge of a space platform, with nothing directly south in the path of their exhaust. This placement means space platforms always travel north toward the top of the screen.

Thrusters are operated via the [[space platform hub]]. When a destination is set and the switch set to "Automatic," thrusters turn on and move the platform toward its destination. They turn off by themselves when the destination is reached. Moving the switch back to "Paused thrust" will turn all thrusters off immediately.

Speed and acceleration are affected by the number of thrusters, their efficiency, and the mass of the platform. Thrusters are at their least efficient when they have full reserves of both fuel and oxidizer, but produce higher speed and acceleration. Partly empty reserves cause them to work more efficiently, as noted in the table below, at the expense of speed/acceleration.

Depending on speed, damaging [[asteroids]] are encountered in greater numbers. This means that defenses should be built before turning on the thrusters, and high thrust requires stronger defense.

== General principles ==
The equations behind thruster performance are a bit complex (see [[#Formulas|below]]), so here are some guidelines for platform design:

* Platform width is far more important than mass in determining top speed (and therefore travel time).
** Adding more thrusters is not worthwhile if wider platform is required.
* Thrust has diminishing returns in either thrusters or fuel, unless both of them are added.
* Minimum total fuel volume is achieved at low speeds.

=== Shape design ===
Platform drag, which limits the top speed achievable with a given thrust, is strongly dependent on the width of the platform (in tiles) and much less dependent on the total mass of the platform.

<gallery mode=nolines class=center widths=400px heights=350px>
File:Speed-vs-width.png|Top speed drops off precipitously as width of the platform increases.|alt=Graph of maximum speed (percent of value at width 10) versus platform width from 10 to 100 tiles, showing a steep drop: speed falls to about half by width 40 and below one-third by width 100.
File:Speed-vs-mass.png|Top speed reduces by only 30 percent with a hundredfold increase in mass.|alt=Graph of maximum speed (percent of value at mass 100) versus platform mass from 100 to 10,000 tons, showing a gentle decline: speed stays near 100% at low mass and is still around 70% at 10,000 tons.
</gallery>

Travel time is also slightly affected by mass (a few percent) due to the longer time taken to get up to maximum speed, but most of the journey is done at top speed and so travel time is dominated by width. This encourages long, narrow rocket-like platform designs for interplanetary travel.

When considering how many thrusters to install on a platform of a certain width, the optimal number of thrusters is as many as will fit without making the platform wider. This is because the additional drag from the extra width cancels out the additional thrust from the extra thrusters. For a fixed fuelling rate, making the platform wider to add more thrusters actually makes it slower.

[[File:Speed-vs-thrusters-and-width.png|500px|center|alt=Graph of maximum speed versus number of thrusters, normalized to 100% at one thruster, for a platform that widens when more than 8 thrusters are added. One curve (fixed total fuel) rises to a peak at eight thrusters and then falls, while the other (full fuel per thruster) rises quickly and then flattens after 8 thrusters, showing that once width must increase, extra thrusters give diminishing or negative returns.|Once adding thrusters forces the platform to become wider, extra engines give diminishing returns, and with fixed fuel can even reduce top speed.]]

For example, for a platform with a width of 32 tiles, the maximum speed is attained with 8 thrusters since each thruster is 4 tiles wide. Note that this does not apply if more thrusters can be added without increasing the width of the platform by stacking multiple thrusters vertically.

=== Marginal diminishing effect of thrust ===
Because thrusters increase efficiency with lower fuel, thrust can be increased by adding either fuel or thrusters alone, but with diminishing returns. To get linear gains, both of them need to be increased proportionally.

<gallery mode=nolines class=center widths=400px heights=350px>
File:Thrust-vs-thrusters.png|alt=Graph showing total thrust and maximum speed versus number of thrusters, both scaled to 100% at one thruster. Both curves rise quickly at first and then flatten, showing diminishing gains as more thrusters are added.|Adding thrusters at a fixed fuel rate increases both thrust and speed, but with strong diminishing returns.
File:Thrust-vs-fuel.png|thumb|alt=graph showing total thrust and maximum speed versus fuel rate (in percent), both scaled to 100% at full fuel. Both curves rise steeply at low fuel and gradually level off toward full fuel.|Increasing fuel to a fixed number of thrusters raises thrust and speed, but each extra percent of fuel gives a smaller gain than the last.
File:Thrust-vs-fully-fueled-thrusters.png|thumb|alt=Graph showing total thrust and maximum speed versus number of thrusters, both scaled to 100% at one thruster. Thrust rises as a straight line, while speed rises more slowly and curves downward, indicating slowly diminishing returns.|With full fuel per thruster, thrust scales linearly with thruster count, while speed increases with some diminishing returns due to drag.
</gallery>

=== Fuel saving ===
If no fuel is replenished or manufactured during the flight, but instead the whole journey is completed relying on pre-stored fuel on board, it is necessary to minimize the total fuel volume consumption for a given trip. In general the slower the flight speed, the less the total fuel consumption, as the greater efficiency of the thrusters more than cancels out the longer travel time.

<gallery mode=nolines class=center widths=400px heights=350px>
File:Fuel-volume-vs-speed.png|thumb|alt=Graph showing normalised travel time and normalised fuel used versus total fuel flow. Travel time drops rapidly as fuel flow increases, while fuel used rises steadily, indicating that minimum fuel consumption occurs at the lowest fuel setting.|For a typical platform, total fuel used increases steadily with fuel flow, so the least fuel is consumed at the lowest throttle, even though travel time is longest.
File:Fuel-volume-vs-speed-wide.png|thumb|alt=Graph of normalised travel time and fuel used versus fuel flow for a wide, single-thruster platform. Travel time falls with increasing fuel, while total fuel used has a minimum at 20% throttle.|On a wide, low-thrust platform, the slowest speed is so slow that it takes less fuel overall to go slightly faster.
File:Fuel-volume-vs-speed-heavy.png|thumb|alt=Graph of normalised travel time and fuel used versus fuel flow for a very heavy platform. Travel time falls with increasing fuel, while total fuel used shows a slight dip at 15% throttle before rising, indicating an optimum near minimum throttle.|On an extremely heavy platform, total fuel used also has a shallow minimum at low, but not minimum throttle.
</gallery>

The exceptions are for platforms with few thrusters and a lot of drag, or very heavy platforms, where the slowest speed is so slow that it takes less fuel overall to go slightly faster. The optimal fuelling rate in these cases is still generally 15-25% though.

== Details ==

=== Datasheet ===
The "Relative thrust" and "Relative fluid consumption" is the percentage for the range of a thruster of that [[quality]]. 50% relative thrust is halfway between the minimum thrust and the maximum thrust. For a base quality thruster, 50% is 55.95 MN, while for a legendary thruster, it is 139.45 MN, a 150% increase.

{| class="wikitable"
|-
! Filled fluid reserve !! Efficiency !! Relative thrust !! Relative fluid consumption !! colspan="5" | Fluid consumption (units/s)
|-
! colspan="4"| !! [[File:quality_normal.png|15px]] Normal !! [[File:quality_uncommon.png|15px]] Uncommon !! [[File:quality_rare.png|15px]] Rare !! [[File:quality_epic.png|15px]] Epic !! [[File:quality_legendary.png|15px]] Legendary
|-
| 0% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 5% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 10% || 100% || 10% || 10% || 6.00 || 7.80 || 9.60 || 11.40 || 15.00
|-
| 15% || 97% || 22% || 24% || 14.14 || 18.39 || 22.63 || 26.87 || 36.00
|-
| 20% || 93% || 34% || 37% || 22.29 || 28.97 || 35.66 || 42.34 || 55.50
|-
| 25% || 90% || 44% || 51% || 30.43 || 39.56 || 48.69 || 57.81 || 76.50
|-
| 30% || 86% || 54% || 64% || 38.57 || 50.14 || 61.71 || 73.29 || 96.00
|-
| 35% || 83% || 63% || 78% || 46.71 || 60.73 || 74.74 || 88.76 || 117.00
|-
| 40% || 79% || 71% || 91% || 54.86 || 71.31 || 87.77 || 104.23 || 136.50
|-
| 45% || 76% || 78% || 105% || 63.00 || 81.90 || 100.80 || 119.70 || 157.50
|-
| 50% || 72% || 84% || 119% || 71.14 || 92.49 || 113.83 || 135.17 || 178.50
|-
| 55% || 69% || 89% || 132% || 79.29 || 103.07 || 126.86 || 150.64 || 198.00
|-
| 60% || 65% || 93% || 146% || 87.43 || 113.66 || 139.89 || 166.11 || 219.00
|-
| 65% || 62% || 96% || 159% || 95.57 || 124.24 || 152.91 || 181.59 || 238.50
|-
| 70% || 58% || 98% || 173% || 103.71 || 134.83 || 165.94 || 197.06 || 259.50
|-
| 75% || 55% || 100% || 186% || 111.86 || 145.41 || 178.97 || 212.53 || 279.00
|-
| 80% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 85% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 90% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 95% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|-
| 100% || 51% || 100% || 200% || 120.00 || 156.00 || 192.00 || 228.00 || 300.00
|}

=== Formulas ===

<math>I=F\Delta t</math> is impulse per tick, <math>\Delta t=1/60\text{ s}</math>.

<math>I_{net} = I_{thrust} + I_{drag}</math>

<math>\Delta v_{net} = \frac{I_{net}}{m}</math> - Change of speed per tick.

<math>I_{drag}\ =-\frac{wv\left(v+60\right)}{4800}-\frac{\left(I_{thrust}m\right)}{m+10000}\ -10</math>

where:
* ''w'' - width of a platform, in tiles
* ''m'' - mass of a platform, in tons
* ''v'' - speed parameter, in km/s, can't be below zero. Actual current speed of a platform is v-10 in first half and v+10 in the second half of a trip.
* <math>I_{thrust}</math> - impulse per tick due to thrust, in<math>\text{ MN}\cdot \text{s}</math>. For example, a normal-quality thruster at maximum thrust produces an impulse per tick: <math>I_{thrust}=F_{thrust}\Delta t=6100\text{ MN}\times 1/60\text{ s}=101.667\text{ MN}\cdot \text{s}</math>.

As formulas above, the drag increases quadratically with velocity, like in real world when moving through low density gas. When drag becomes equal to thrust force, acceleration stops, a platform hits its top speed.
Another important detail is that drag hence top speed depends not on the mass of a platform, but its width. Mass is still a factor of how fast the top speed can be reached though.
The second term of drag is negligible for ordinary platforms and exist to punish extra massive platforms by effectively cutting a piece of thrust force. For a platform of 1000 tons 10% of thrust force is lost.

That formulas combined give
<math>v_{max}=10\sqrt{\frac{\frac{480000I_{thrust}}{m+10000}-480}{w}+9}-30</math>

plus/minus 10 for actual maximum speed.

The amount of thrust force in MN created by a single thruster is described well in in-game wiki. Multiple sources of thrust stack additively.

For example, consider a platform with 4 legendary-quality thrusters (<math>I_{thrust}=4\times 15.3\times 1000\text{ MN}\times 1/60\text{ s}=1020\text{ MN}\cdot \text{s}</math>). The width of the platform is 17 tiles (<math>w=17</math>). The mass of the platform is 1002.8 tons (<math>m=1002.8\text{ t}</math>).
On the trip from Nauvis to Vulcanus, the maximum speed in the first half of the trip (<math>[0\text{ km},7500\text{ km}]</math>) is:

<math>v_{max,first}=10\sqrt{\frac{\frac{480000\times 1020}{1002.8+10000}-480}{17}+9}-30-10=469.73\text{ km}/\text{s}</math>

The maximum speed in the second half of the trip (<math>[7500\text{ km},15000\text{ km}]</math>) is:

<math>v_{max,second}=(v_{max,first}+10)+10=489.73\text{ km}/\text{s}</math>

== Trivia ==
* The color of the thruster trail changes depending on the amount of fuel and oxidizer in the thruster, becoming blue when fuel is low or red when oxidizer is low.
* The thruster exhaust trail is 82 tiles long. Structures cannot be placed in the exhaust trail. This means that the total dimensions where the thruster blocks placement of other structures is 4×90 tiles. However, structures can be placed directly behind the end of the trail.

== Gallery ==
<gallery widths=400px heights=200px>
File:Thruster Flame Color.png|Thruster trail turns red when fuel amount is higher than oxidizer (left) and blue when oxidizer is higher (right)
File:Thrusters in Map View.png|Thruster trails are visible on the zoomed-out map view
</gallery>

== History ==
{{History|2.1.7|
* Tooltip Thrust display values multiplied by 60 [https://forums.factorio.com/120393]
}}

{{SpaceNav}}