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AAE450 Senior Spacecraft Design Brandon Anderson Week 3: February 1st, 2007 Structures Group Taxi Capsule, Electric Propulsion System.

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Presentation on theme: "AAE450 Senior Spacecraft Design Brandon Anderson Week 3: February 1st, 2007 Structures Group Taxi Capsule, Electric Propulsion System."— Presentation transcript:

1 AAE450 Senior Spacecraft Design Brandon Anderson Week 3: February 1st, 2007 Structures Group Taxi Capsule, Electric Propulsion System

2 AAE450 Senior Spacecraft Design Electric Propulsion System Truss –Supports EP system and various vehicles being transported –4 segments –Standard 1.5x Safety Factor –2.5g Max Load –Cube, width = 2m –Al 7075-T6 –Payloads based on Dan Maguire’s calculations SegmentMass (mt) Volume (m^3) Length (m) 120.68220.5 213.68020 320.68220.5 413.68020

3 AAE450 Senior Spacecraft Design EP Continued How to lower this size – Staged Mars Launch Vehicle will reduce payload –2-axis Trusses –Material Choice AlLi Alloy shows advantage in other structures

4 AAE450 Senior Spacecraft Design Backup Slides Total Mass (mt)Structural Mass (mt)Propellant Mass (mt) Arrive Earth (aE)40040360 Depart Mars 1 (dM)588.888888958.88888889530 Depart Mars 2 (dM)77.777777787.77777777870 Arrive Mars 1 (aM)70070630 Arrive Mars 2 (aM)311.111111131.11111111280 Depart Earth 1 (dE)1388.888889138.88888891250 Depart Eatth 2 (dE)888.888888988.88888889800 Mars Launch 1 (ML)3888.888889388.88888893500 Mars Launch 2 (ML)4444.444444444.44444444000 Mars Taxi 1 (MT)422.222222242.22222222380 Mars Taxi 2 (MT)377.777777837.77777778340 Earth Taxi (ET)138.888888913.88888889125

5 AAE450 Senior Spacecraft Design Backup Slides VehicleHeight Taxi Capsule (TC)-- Mars Taxi 1 (MT) Mars Taxi 2 (MT) 16.5 m 15.7 m Earth Taxi (ET)5.5 m Arrive Earth (aE)16.5 m Depart Mars 1 (dM) Depart Mars 2 (dM) 24 m 3.5 m Arrive Mars 1 (aM) Arrive Mars 2 (aM) 27.5 m 13 m Depart Earth 1 (dE) Depart Earth 2 (dE) 56 m 36 m Mars Launch 1 (ML) Mars Launch 2 (ML) 160 m 175 m From Dan Maguire Week 2 Presentation

6 AAE450 Senior Spacecraft Design Equations Buckling Yield

7 AAE450 Senior Spacecraft Design Dimensions SectionHeight (m)Width (m)Bar Radius (m) 15.52.16 252.15 352.14 452.13 552.12 652.11 752.1 852.09 Each Truss Contains 4 Sections, 1-4 are for near truss, 5-8 from far truss. Designed assuming payloads will be max 8.7m diameter. Allows for minimum 1.3m between payloads. Cross bars to connect to vertical sections are.09m radius.

8 AAE450 Senior Spacecraft Design Mass and Volume SectionMass (mt)Volume (m^3) 18.523.13 27.122.56 36.232.24 45.581.94 54.631.67 63.961.42 73.321.19 82.74.99 This is for each side.

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