V, free-stream w l o c l t y z A method for predlctlng t h e performance i~ viscous correlation paraneter, w&/K aerodynamlcs of aeroasslsted Orbltdl t r a n s f e r v d r l c l e s was developed based on technlgues that Space Shuttle o r b l t e r and theorles from the -, mro used I n the .erodynamlC ddtdbook Of the a angle of attack Hvnersonlc h r b l t r a r y Body R w r a m . The method Y rat10 O f SpGCif1C heats ,bans the e n t l r e f l i g h t broflie of the derOaSSisted Orbltdl t r a n s f e r Vehicles from t h e extreme high altltuck non-continwm re ine to the highly viscous continurn regime. Resufts from t h l s llethod me mnpared wlth f l l g h t data from t h e Shuttle orblter. Apollo Capsule. and the Vlklng Aeroshell. Flnally, performance aerodynamics are estimated for three aeroassisted o r b i t a l t r a n s f e r vehlcles t h a t range from low t o hlgh 1Ift-to-drag r a t i o conflguratlons. NOMENCLATUIE CA Chdpmdn-Rubesin vlacoslty coefficient CA a x l a l coefflclent, axlal f0rcelq.S Co drag cuefflcient, drag forceles CL lift coefflclent, l i f t force/eS w c, , normal coefflclent, normal f o r c e / e S S mference area. 4. Tw wall tanperature . . T, free-stream temperature T' reference tcrnperature *Aerospace Englneer, Space System Dlvlslon. Member AIM. *.Head, Vehlcle Analysts Branch, space Systems Dlvlslon. Meknber AIM. A mean free path u , free-stream vlscoslty a energy acconndatlon coefflclent Abbrevlatlons AOTV a e r m s s i s t e d o r b l t a l t r a n s f e r vehlclea FW free molecular flow HAB
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.