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Moderate lift-to-drag aeroassist
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Florence, D. E. Fischer, G. |
| Copyright Year | 1984 |
| Description | Significant performance benefits are realized via aerodynamic braking and/or aerodynamic maneuvering on return from higher altitude orbits to low Earth orbit. This approach substantially reduces the mission propellant requirements by using the aerodynamic drag, D, to brake the vehicle to near circular velocity and the aerodynamic lift, L, to null out accumulated errors as well as change the orbital inclination to that required for rendezvous with the Space Shuttle Orbiter. Broad concept evaluations were performed and the technology requirements and sensitivities for aeroassisted OTV's over a range of vehicle hypersonic L/D from 0.75 to 1.5 were systematically identified and assessed. The aeroassisted OTV is capable of evolving from an initial delivery only system to one eventually capable of supporting manned roundtrip missions to geosynchronous orbit. Concept screening was conducted on numerous configurations spanning the L/D = 0.75 to 1.5 range, and several with attractive features were identified. Initial payload capability was evaluated for a baseline of delivery to GEO, six hour polar, and Molniya (12 hours x 63.4 deg) orbits with return and recovery of the aeroassist orbit transfer vehicle (AOTV) at LEO. Evolutionary payload requirements that were assessed include a GEO servicing mission (6K up and 2K return) and a manned GEO mission (14K roundtrip). |
| File Size | 1781501 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850008686 |
| Archival Resource Key | ark:/13960/t1qg3jj1t |
| Language | English |
| Publisher Date | 1984-04-01 |
| Access Restriction | Open |
| Subject Keyword | Launch Vehicles And Space Vehicles Orbit Transfer Vehicles Aerodynamic Configurations Propulsion System Performance Low Earth Orbits Lift Drag Ratio Aeroassist Aeromaneuvering Payload Delivery Sts Geosynchronous Orbits Aerobraking Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
