Accession Number : ADA259143


Title :   An Electromagnetically-Controlled Precision Orbital Tracking Vehicle (POTV)


Descriptive Note : Master's thesis,


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING


Personal Author(s) : Lawrence, Richard E , Jr


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259143.pdf


Report Date : Dec 1992


Pagination or Media Count : 142


Abstract : A propulsion configuration it defined for a precision orbital tracking vehicle (POTV) that employs electrodynamic forces to control vehicle attitude and position with respect to another spacecraft. A pair of electrically powered thrusters assist the POTV in position control. The vehicle can maintain continuous standoff at close range from another spacecraft in any direction, has docking capability, and has gross orbital transfer capability. These capabilities and the specific design derived for the POTV have been defined by the requirements of a postulated space facility (ASSET) that salvages structural aluminum from the external fuel tank of the space shuttle. Precision control of the POTV is achieved by an electrical conductor configuration that makes current-produced thrust continuously available for independent control of components of vehicle attitude and translation. A robust tracking controller is designed that guarantees stability and compensates for modelling error.... Tethering, Spacecraft docking, Tracking, Space shuttle external tank.


Descriptors :   *SPACECRAFT , *STANDOFF , *THRUSTERS , *STATIONKEEPING , *ELECTRIC ENGINES , CONTROL , TRACKING , ALUMINUM , ERRORS , SPACE SHUTTLES , TRANSFER , PARKING ORBIT TRAJECTORIES , LOW FREQUENCIES , TRANSFER TRAJECTORIES , TETHERING , SPACECRAFT DOCKING , ELECTRODYNAMICS , LAUNCH VEHICLES , THRUST , FUEL TANKS , PRECISION , CONFIGURATIONS , THESES , REQUIREMENTS , STABILITY


Subject Categories : Electric and Ion Propulsion
      Spacecraft Trajectories and Reentry


Distribution Statement : APPROVED FOR PUBLIC RELEASE