1. AAE450 Spring 2009 Time to Complete 50m/s ΔV & 100g Payload System Overview Brittany Waletzko 100g Payload Integration Manager Translunar/OTV Phase Week 9 Brittany Waletzko - ATT

2. AAE450 Spring 2009 50m/s ΔV Maneuver (Requirement)  t = ΔV m T  T = instantaneous thrust (assumed constant over interval)  m = instantaneous mass (assumed constant over interval)  Calculated using four thrusters, pointed parallel to axis of symmetry (as per current configuration of 12 thrusters on each lander) Brittany Waletzko - ATT 100g10kgArbitrary Total Wet Mass (kg) 4115008276 Thrust per thruster(N) 13 355.84 Time for deltaV (s) 395481291 Time for deltaV (min)6.68.04.8 ΔV = ʃ T/m dt = 50 m/s

3. AAE450 Spring 2009 100g Payload System Brittany Waletzko - ATT Mass (kg) Net Power (W) Cost ($) TLI Prop144.65-2214$1,095,100 TLI Comm0-31 TLI ATT10.76-35.6 (see LD cost) TLI STRC/THM51.62-10$100 TLI Pow48.23-120$3,647,260 TLI255.26-2410.6$4,742,460 LD Prop108.08 LD Comm2.21-32.9$295,500 LD ATT10.75-12.7$400,000 LD STRC/THM25.2-10$50,029 LD Pow5.05641.45$314,500 LD151.29585.85$1,060,029 Mass (kg) Net Power (W) Cost ($) Loco Prop0.172-0.534 Loco Comm0.94-6$21,700 Loco PL0.1 Loco Vibe0.1-15 Loco STRC/THM 0.910 Loco Pow0.213 Loco (1)2.432-18.534$21,700 Total in LEO411.4-1861.8$5,845,889 (Continued)

4. AAE450 Spring 2009 Questions? Brittany Waletzko - ATT

5. AAE450 Spring 2009 The Scenario Brittany Waletzko - ATT  OTV: consists of TLI main engine, power system, reaction wheels, four attitude thrusters, and lander (containing two loco spheres)  Running during TLI: main engine, some attitude control, power system, heater, communications  Lander: prop system, comm, attitude sensors and 12 thrusters, thermal system, power system, two loco spheres  Locomotion: drive system, comm, payload, battery

6. AAE450 Spring 2009 Current 100g Integration Sheet Brittany Waletzko - ATT (see attached two pages)