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Mass Estimations for Tami

Mass Estimations for Tami. RCS: 4kg each * 24 engines = 96 kg Parachutes: Supersonic = 136 kg Subsonic = 595 kg Retro Engine: 135 kg (OMS) Propellants: 4515 kg According to Table 4.4.2 in PERForM Total Mass = 5477 kg. Calculation of Launch Loads. Saturn V System

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Mass Estimations for Tami

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  1. Mass Estimations for Tami • RCS: 4kg each * 24 engines = 96 kg • Parachutes: • Supersonic = 136 kg • Subsonic = 595 kg • Retro Engine: 135 kg (OMS) • Propellants: 4515 kg • According to Table 4.4.2 in PERForM • Total Mass = 5477 kg

  2. Calculation of Launch Loads • Saturn V System • F(liftoff)=3,440,310 kgf • m(end of first stage)=887,501 kg • Therefore a=F/m=3.88 g’s

  3. Calculation of Launch Loads • Space Shuttle • F(liftoff)=2,625,932 kgf • m(end of SRB burn)=836,389 kg • Therefore a=F/m=3.14 g’s

  4. Calculation of Launch Loads • Energia • F(liftoff)=3,582,250 kgf • m(end of strap-on boosters)=856,897 kg • Therefore a=F/m=4.18 g’s

  5. Retro System – Shuttle OMS • Non-cryogenic • High thrust and Isp for non-cryogenic engine • Reliable and Reusable • 100 missions • 1,000 starts

  6. Mass Pen. for Retro Burn

  7. Mass Pen. For Angle Change

  8. Cost Increase for Angle Burn

  9. Things to Do • Study PERForM’s Parachute Code • Begin to write our own parachute code • Finish by next Wednesday • Have parachute loads for Mike • Need to work with Tami on coding retro burns into the trajectory code • Finish by next mid-week • RCS Engines • Start writing Design-Method Report

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