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Mars Ascent Delta-V Trade Study & Trajectory

Mars Ascent Delta-V Trade Study & Trajectory. Jackie Jaron 25 January 2005 Aerodynamics Team Mars Ascent Team Mars Lander/Ascent Vehicle Ad Hoc Group. Delta-V Trade Study. Motivation: Minimize Mars Lander propellant mass Assumptions: Lander parking orbit altitude: 350 km

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Mars Ascent Delta-V Trade Study & Trajectory

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  1. Mars Ascent Delta-V Trade Study & Trajectory Jackie Jaron 25 January 2005 Aerodynamics Team Mars Ascent Team Mars Lander/Ascent Vehicle Ad Hoc Group

  2. Delta-V Trade Study • Motivation: • Minimize Mars Lander propellant mass • Assumptions: • Lander parking orbit altitude: 350 km • Burn at ellipse perigee • Outcome: • Want orbits with P < 1 day • Investigate frequency of docking opportunities Figure 1: ΔV from Mars Parking Orbit to CTV Orbit versus Orbit Period of Elliptical Orbit

  3. Mars Ascent Trajectory & Delta-V • Mars launch ΔV to parking orbit alt.= 350 km • Accounted for losses/gains ΔV350 = 3380 m/s ΔVgrav = 203 m/s ΔVsteer = 34 m/s ΔVdrag = 169 m/s ΔVrot = -241 m/s ΔVtotal = 3545 m/s Figure 2: Preliminary Mars Ascent Trajectory

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