Space Propulsion - IAP/TU Wien

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Space Propulsion Mission Design and Attitude Control Task Mission design Orbit changes Plane changes Orbit trim Stationkeeping Repositioning Attitude Control Thrust vector control Attitude control Attitude changes Reaction wheel unloading Maneuvering (Translational velocity change) Convert one orbit to another Change orbital plane, other orbit parameters remaining constant Remove Iaunch vehicle errors Maintain constellation position Change constellation position (RotationaI velocity change) Remove vector errors Maintain an attitude Change attitudes Description Remove stored momentum Repositioning the spacecraft axes
Space Propulsion coplanar orbit changes changing a circular orbit to a coplanar elliptical orbit generalised coplanar maneuvre ΔV 2 = V 2 i + V 2 f − 2V V i f cosα ΔV is smallest when this term is largest cosα = 1 the transfer can be made at any intersection of two orbits. the least velocity change is necessary when the orbits are tangent and α is zero
Page 1 and 2: Space Propulsion Pioneer 10 Pioneer
Page 3 and 4: Space Propulsion
Page 5 and 6: Space Propulsion Every particle of
Page 7 and 8: Space Propulsion Circular orbit mV
Page 9 and 10: Space Propulsion 5 3.98x10 V orb
Page 11 and 12: Space Propulsion Gravitational traj
Page 13 and 14: Space Propulsion Gravitational traj
Page 15 and 16: Space Propulsion dA 2 2 P = abπ =
Page 17 and 18: Space Propulsion The orbit of a bod
Page 19 and 20: Space Propulsion Elliptical orbits
Page 21 and 22: Space Propulsion Tsiolkovsky equati
Page 23 and 24: Space Propulsion Total impulse Tota
Page 25 and 26: Space Propulsion jet power definiti
Page 27 and 28: Space Propulsion these purely mecha
Page 29 and 30: Space Propulsion The staging princi
Page 31 and 32: Space Propulsion m i = ρmL + ψ .
Page 33: Space Propulsion Check for tankage
Page 37 and 38: Space Propulsion Example 1: Simple
Page 39 and 40: Space Propulsion Hohmann transfer:
Page 41 and 42: Space Propulsion Velocity increase
Page 43 and 44: Space Propulsion Combined maneuver:
Page 45 and 46: Repositioning, cont‘d Space Propu
Page 47 and 48: Space Propulsion Basically a 3 - bo
Page 49 and 50: Space Propulsion vectorial velocity
Page 51 and 52: Space Propulsion
Page 53 and 54: Space Propulsion CASSINI probe to S
Page 55 and 56: Space Propulsion Liftoff from groun
Page 57 and 58: Space Propulsion Spiraling up dv dt
Page 59 and 60: Space Propulsion Spiraling up time
Page 61 and 62: Space Propulsion Comparison of Hohm
Page 63 and 64: Space Propulsion Attitude maneuvres
Page 65 and 66: Space Propulsion Thruster combinati
Page 67 and 68: Space Propulsion Attitude control t
Page 69 and 70: Space Propulsion Kinetics for rotat
Page 71 and 72: Space Propulsion one - axis maneuvr
Page 73 and 74: Space Propulsion Example 6: One-Axi
Page 75 and 76: Space Propulsion Example 7: Precess
Page 77 and 78: limit cycle cont‘d Space Propulsi
Page 79 and 80: Space Propulsion Example 8: Limit-C
Page 81 and 82: Space Propulsion dir. of ext. torqu
Page 83 and 84: Space Propulsion forced limit cycle
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eaction wheel, cont’d Space Propu
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eaction wheel, cont’d Space Propu
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Space Propulsion - IAP/TU Wien

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