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Mass comparisons of electric propulsion systems for nssk of geosynchronous spacecraft
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Rawlin, Vincent K. Majcher, Gregory A. |
| Copyright Year | 1991 |
| Description | A model was developed and exercised to allow wet mass comparisons of three axis stabilized communication satellites delivered to geosynchronous transfer orbit. The mass benefits of using advanced chemical propulsion for apogee injection and north-south stationkeeping (NSSK) functions or electric propulsion (hydrazine arcjets and xenon ion thrusters) for NSSK functions are documented. A large derated ion thrusters is proposed which minimizes thruster lifetime concerns and qualification test times when compared to those of smaller ion thrusters planned for NSSK applications. The mass benefits, which depend on the spacecraft mass and mission duration, increase dramatically with arcjet specific impulse in the 500 to 600 s range, but are nearly constant for the derated ion thruster operated in the 2300 to 3000 s range. For a given mission, the mass benefits with an ion system are typically double those of the arcjet system; however, the total thrusting time with arcjets is less than 1/3 that with ion thrusters for the same thruster power. The mass benefits may permit increases in revenue producing payload or reduce launch costs by allowing a move to a smaller launch vehicle. |
| File Size | 2257180 |
| Page Count | 50 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910021898 |
| Archival Resource Key | ark:/13960/t9b61gr5w |
| Language | English |
| Publisher Date | 1991-01-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Service Life Synchronous Satellites Performance Tests Propulsion System Performance Cost Reduction Communication Satellites Propulsion System Configurations Chemical Propulsion Electric Propulsion Hydrazine Engines Stationkeeping Transfer Orbits Three Axis Stabilization Ion Propulsion Specific Impulse Geosynchronous Orbits Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
