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Rocket Engines: Difference between revisions

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m Added Hydrazine performance info to Rocket performance table for Pumped Gas and Pumped Liquid engines.
Line 11: Line 11:
     ! rowspan=2 | Rocket Mass Contribution, kg
     ! rowspan=2 | Rocket Mass Contribution, kg
     ! rowspan=2 | Formal Max Thrust, kN
     ! rowspan=2 | Formal Max Thrust, kN
     ! colspan=2 | Tested Max Thrust, kN
     ! colspan="3" | Tested Max Thrust, kN
     ! colspan=2 | Propellant consumption<ref>Consumption values were measured for "Tested Max Thrust", maximum efficiency.</ref>, mol/tick
     ! colspan="3" | Propellant consumption<ref>Consumption values were measured for "Tested Max Thrust", maximum efficiency.</ref>, mol/tick
     ! rowspan=2 | Efficiency, %
     ! rowspan=2 | Efficiency, %
     ! rowspan=2 | Exhaust Velocity, km/s
     ! rowspan=2 | Exhaust Velocity, km/s
Line 20: Line 20:
     ! Using O<sub>2</sub>
     ! Using O<sub>2</sub>
     ! Using N<sub>2</sub>O
     ! Using N<sub>2</sub>O
     ! Using O<sub>2</sub>
      
!Using
N<sub>2</sub>H<sub>4</sub>
! Using O<sub>2</sub>
     ! Using N<sub>2</sub>O
     ! Using N<sub>2</sub>O
     |-
      
!Using
N<sub>2</sub>H<sub>4</sub>
|-


     ! <b>[[Pumped Gas Engine]]</b>
     ! <b>[[Pumped Gas Engine]]</b>
Line 30: Line 36:
     | 16.54
     | 16.54
     | 24.47
     | 24.47
   
|18.10
| 18.00
     | 18.00
     | 18.00
     | 18.00
      
    | 100
|
| 100
     | 4.02
     | 4.02
     | 411
     | 411
Line 43: Line 53:
     | 18.74<ref name="PLE-CE">Cooling fuel lower than barely condensing temperatures gives minor upside on engine thrust, <1% increase.</ref>
     | 18.74<ref name="PLE-CE">Cooling fuel lower than barely condensing temperatures gives minor upside on engine thrust, <1% increase.</ref>
     | 31.25<ref name="PLE-CE"/>
     | 31.25<ref name="PLE-CE"/>
     | 15.00
      
|25.00
| 15.00
     | 16.<span style="border-top: 1px solid">66</span>
     | 16.<span style="border-top: 1px solid">66</span>
     | 140
      
|
| 140
     | 5.56
     | 5.56
     | 568
     | 568
Line 56: Line 70:
     | 60.32
     | 60.32
     | 41.57
     | 41.57
     | 69.77
      
|
| 69.77
     | 31.68<ref name="NitroPumpRate">N<sub>2</sub>O temperature must be above max condensing point to allow high pressures, therefore decreasing pumping rate.</ref>
     | 31.68<ref name="NitroPumpRate">N<sub>2</sub>O temperature must be above max condensing point to allow high pressures, therefore decreasing pumping rate.</ref>
     | 96
      
|
| 96
     | 3.86
     | 3.86
     | 394
     | 394
Line 69: Line 87:
     | 38.84
     | 38.84
     | 59.70
     | 59.70
     | 27.23
      
|
| 27.23
     | 28.16
     | 28.16
     | 160
      
|
| 160
     | 6.31
     | 6.31
     | 644
     | 644
Line 82: Line 104:
     | 93.87
     | 93.87
     | 64.75
     | 64.75
     | 118.45
      
|
| 118.45
     | 53.83<ref name="NitroPumpRate" />
     | 53.83<ref name="NitroPumpRate" />
     | 88
      
|
| 88
     | 3.54
     | 3.54
     | 361
     | 361
Line 95: Line 121:
     | 60.39
     | 60.39
     | 95.52
     | 95.52
     | 47.03
      
|
| 47.03
     | 49.86
     | 49.86
     | 144
      
|
| 144
     | 5.68
     | 5.68
     | 579
     | 579
     |-
     |-


     ! colspan=11 | <i>Update 0.2.6136.26812 - 01/28/2026</i> <span class="right">[[Rocket_Engines]]</span>
     ! colspan="13" | <i>Update 0.2.6136.26812 - 01/28/2026</i> <span class="right">[[Rocket_Engines]]</span>
   |}
   |}
Note:  Hydrazine (N<sub>2</sub>H<sub>4</sub>) testing was performed at 282K (9C) for Liquid Pumped, and 500K (227C) for Gas Pumped engines.
</div>
</div>

Revision as of 22:31, 4 April 2026


Rocket Engines give you their max output in kN with this you can calculate what they can reasonably carry into orbit depending on the planet or moon you are on. Force = Mass * Acceleration. Acceleration is equal to the planet's gravity, Mass is given in kg per part of the rocket, and Force is kN. If your thrust force listed below is less than the weight of the rocket in kN then you will not even take off. It is better to have a thrust much higher than the weight of the rocket or else you risk running out of fuel on launch and on landing.

Liquid propellants bring greater efficiencies. Using Nitrous Oxide as oxidizer provides excessive thrust values. Keep in mind that N2O fuel mix is 1.9375 times heavier at same moles, or 2.15 times heavier at same volume, while thrust boost is around 1.5-1.7. Engine efficiency determines "bonus" thrust multiplier, meaning engine with higher efficiency will give more thrust consuming same amount of fuel. Thus using liquid engines is more favorable if one can cool fuel down, moreover Pressure Fed Engines consume fuel inversely proportional to its temperature. On the other hand if Volatiles and Oxygen are in excess (e.g. farm on Vulcan) is may be much easier to opt for Pressure Fed Gas Engine. It will provide ~40kN at 20°C.

Name Power Usage, W Rocket Mass Contribution, kg Formal Max Thrust, kN Tested Max Thrust, kN Propellant consumption[1], mol/tick Efficiency, % Exhaust Velocity, km/s Specifc Index Isp, s
Using O2 Using N2O Using

N2H4

Using O2 Using N2O Using

N2H4

Pumped Gas Engine 200 500 16.20 16.54 24.47 18.10 18.00 18.00 100 4.02 411
Pumped Liquid Engine 200 500 17.90 18.74[2] 31.25[2] 25.00 15.00 16.66 140 5.56 568
Pressure Fed Gas Engine 10 500 40.30 60.32 41.57 69.77 31.68[3] 96 3.86 394
Pressure Fed Liquid Engine 20 500 29.30 38.84 59.70 27.23 28.16 160 6.31 644
Heavy Pressure Fed Gas Engine[4] 10 750 62.60 93.87 64.75 118.45 53.83[3] 88 3.54 361
Heavy Pressure Fed Liquid Engine[4] 20 750 44.30 60.39 95.52 47.03 49.86 144 5.68 579
Update 0.2.6136.26812 - 01/28/2026 Rocket_Engines

Note: Hydrazine (N2H4) testing was performed at 282K (9C) for Liquid Pumped, and 500K (227C) for Gas Pumped engines.

  1. ↑ Consumption values were measured for "Tested Max Thrust", maximum efficiency.
  2. ↑ 2.0 2.1 Cooling fuel lower than barely condensing temperatures gives minor upside on engine thrust, <1% increase.
  3. ↑ 3.0 3.1 N2O temperature must be above max condensing point to allow high pressures, therefore decreasing pumping rate.
  4. ↑ 4.0 4.1 In normal playthrough, could only be aquired via trade with 'Cosmic Curiosities' trader for 1000 credits.
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Last modified
This page was last edited on 4 April 2026, at 22:31.