A vehicle simulation is 'surface-interacting' if the state of the vehicle (position, velocity, and acceleration) relative to the surface is important. Surface-interacting simulations per-form ascent, entry, descent, landing, surface travel, or atmospheric flight. The dynamics of surface-interacting simulations are influenced by the modeling of gravity. Gravity is the sum of gravitation and the centrifugal acceleration due to the world s rotation. Both components are functions of position relative to the world s center and that position for a given set of geodetic coordinates (latitude, longitude, and altitude) depends on the world model (world shape and dynamics). Thus, gravity fidelity depends on the fidelities of the gravitation model and the world model and on the interaction of these two models. A surface-interacting simulation cannot treat gravitation separately from the world model. This paper examines the actual performance of different pairs of world and gravitation models (or direct gravity models) on the travel of a supersonic aircraft in level flight under various start-ing conditions.
Gravity Modeling Effects on Surface-Interacting Vehicles in Supersonic Flight
2010
24 pages
Report
No indication
English
Gravity Modeling Effects on Surface-Interacting Vehicles in Supersonic Flight
British Library Conference Proceedings | 2010
|Further Investigations of Gravity Modeling on Surface Interacting Vehicle Simulations
British Library Conference Proceedings | 2009
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