• Dr. David Finkleman
  • Center for Space Standards and Innovation
  • Holden Auditorium
  • 4:00 p.m.

This talk examines diverse approaches to representing gasdynamic drag effects on Low Earth Orbit (LEO) satellites. Although the total drag force on a satellite can be measured, the physics of gasdynamic resistance, dynamics of the orbiting body, and characteristics of the atmosphere are inextricably combined. Investigators must hypothesize physical relationships among the drag force, body shape, size, and orientation, the distribution of density, and the predictive assessment of density. Drag coefficients determined under one set of hypotheses are often employed improperly in orbital assessments that use a different set of hypotheses. Our goal is to consolidate the existing information, establish a framework for future research, and expose practical issues.