Thursday, September 2, 2021

Baseline Performance - the Apollo and Space Shuttle Programs.


 The Saturn-V is a great sample rocket. 

Its performance and Stats are readily available and its a great baseline since we want our performance to be compared against this Iconic rocket. 

Things that is not in Wikipedia are the following:

  1. The Total Volume is 414 Dtons or as big as a Fat Trader except that 90% is Propulsion instead of the 10-20% of a Fat Trader is Fuel. 
    1. S-IC first stageS-II second stageS-IVB third stageTOTAL
      HEIGHT42.0 m24.9 m17.9 m
      Diameter10.0 m10.0 m6.6 m
      Volume3,298.7 m^31,953.3 m^3611.0 m^35,252.0 kg
      Dtons233.1 DTON138.0 DTON43.2 DTON371.2 DTON
      Dry Weight131,000.0 kg36,000.0 kg10,000.0 kg167,000.0 kg
      Total Wt2,300,000.0 kg480,000.0 kg119,000.0 kg2,780,000.0 kg
      FULL LOAD2,780,000.0 kg599,000.0 kg119,000.0 kg
      EnginesRocketdyne F-1Rocketdyne J-2Rocketdyne J-2
      Number551
    2. As a Baseline I start modifying the % of propulsion at a given TL. 
  2.  the Acceleration which we can get is 1.3Gs
    1. Thrust (N)35,100,000 N4,900,000 N1,033,100.0 N
      Accel (m/s^2)12.638.188.68
      Accel (G)1.290.830.89
      Propulsion2,169,000.0 kg444,000.0 kg109,000.0 kg
      Kg/s12,910.7 kg1,156.3 kg741.5 kg
      Dtons/S0.9120.0820.052
      Burn/Accel(Dton/G)0.710.100.06
    2. I like how the rocket hovering Illustrated a 1G thrust vs 1G effect = Hovering. 

  3. The Context of how its not the Performance of the Rockets that Improved over time but the Reliability. Their Thrust to Mass Ratio was roughly to 70-80. Comparing the 196B  Shuttle Program 1.4B per launched (135 launches, 2 failures and partial failures) vs  49B Apollo Program with 4.7B per Launch. 

S-IC first stageS-II second stageS-IVB third stageTOTAL
HEIGHT42.0 m24.9 m17.9 m
Diameter10.0 m10.0 m6.6 m
Volume3,298.7 m^31,953.3 m^3611.0 m^35,252.0 kg
Dtons233.1 DTON138.0 DTON43.2 DTON371.2 DTON
Dry Weight131,000.0 kg36,000.0 kg10,000.0 kg167,000.0 kg
Total Wt2,300,000.0 kg480,000.0 kg119,000.0 kg2,780,000.0 kg
FULL LOAD2,780,000.0 kg599,000.0 kg119,000.0 kg
EnginesRocketdyne F-1Rocketdyne J-2Rocketdyne J-2
Number551
Target Height67,000.0 m175,000.0 m
Delta-V2121.1510795262.3864716538.568824
Burn Time168384147
Thrust (N)35,100,000 N4,900,000 N1,033,100.0 N
Accel (m/s^2)12.638.188.68
Accel (G)1.290.830.89
Propulsion2,169,000.0 kg444,000.0 kg109,000.0 kg
Kg/s12,910.7 kg1,156.3 kg741.5 kg
Dtons/S0.9120.0820.052
Burn/Accel(Dton/G)0.710.100.06
Dtons/S




No comments: