Midcourse navigation for the European Comet Halley mission

Details Midcourse navigation for the European Comet Halley mission Midcourse navigation for the European Comet Halley mission

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981esasp.160..189h&link_type=abstract

In ESA Spacecraft Flight Dyn. p 189-195 (SEE N82-14123 05-12)

Physics

Esa Satellites, European Space Programs, Flyby Missions, Midcourse Guidance, Algorithms, Error Correcting Devices, Fuel Consumption, Halley'S Comet, Satellite Antennas

Scientific paper

Midcourse correction modes for the Giotto mission are analyzed and an onboard algorithm for propellant estimation is developed. Omnidirectional mode (turning the spacecraft spin axis in any direction for a low gain) cardoid, S band antenna combined mode (using a despun high gain antenna together with thermal and power conditions), and contingency modes used in case of thruster failure are used with axial continuous burn or radial pulsed burn. The use of these modes and propellant budgeting methods is investigated using the discretization method. Optimization is important for Giotto in case malfunctions in the initial stages prevent its close approach to the target.

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