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