Rotary-wing aerodynamics. 

 - 1 volume (various pagings) :  illustrations ;  24 cm. 
<br/><br/>v. 1. Basic theories of rotor aerodynamics (with application to helicopters) / by W. Z. Stepniewski -- volume 2. Performance prediction of helicopters / by C. N. Keys ; edited by W. Z. Stepniewski 
<br/><br/><label>ISBN: </label>0486646475 9780486646473 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Helicopters --Aerodynamics.
<br/><br/><label>LC Class. No.: </label>TL716   / .R67 1984