Drogue parachute damping is required to dampen the Orion Multi Purpose Crew Vehicle (MPCV) crew module (CM) oscillations prior to deployment of the main parachutes. During the Apollo program, drogue parachute damping was modeled on the premise that the drogue parachute force vector aligns with the resultant velocity of the parachute attach point on the CM. Equivalent Cm(sub q) and Cm(sub alpha) equations for drogue parachute damping resulting from the Apollo legacy parachute damping model premise have recently been developed. The MPCV computer simulations ANTARES and Osiris have implemented high fidelity two-body parachute damping models. However, high-fidelity model-based damping motion predictions do not match the damping observed during wind tunnel and full-scale free-flight oscillatory motion. This paper will present the methodology for comparing and contrasting the Apollo legacy parachute damping model with full-scale free-flight oscillatory motion. The analysis shows an agreement between the Apollo legacy parachute damping model and full-scale free-flight oscillatory motion.
Evaluation of Drogue Parachute Damping Effects Utilizing the Apollo Legacy Parachute Model
AIAA Applied Aerodynamics Conference ; 2012 ; New Orleans, LA, United States
2011-01-01
Conference paper
No indication
English
Evaluation of Drogue Parachute Damping Effects Utilizing the Apollo Legacy Parachute Model
British Library Conference Proceedings | 2012
|NTRS | 1974
NTIS | 1974
Engineering Index Backfile | 1963
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