unsymmetrical power, see asymmetrical power. 
viscosity. ................................... 4 
V-n or V-g diagram. ......................... 334 
vortex system. ............................... 63 
line or bound vortex. ....................... 64 
tip or trailing vortex. ...................... 64 
w&r injection 
reciprocating engine. ....................... 144 
turbojetengine ............................. 131 
wavedrag................................. , 215 
wind, effect on range. ........................ 168 
windshear ................................. 367 
yaw,adverse ................................ 291 
yawangle ................................... 284 
YPWm”me”t ................................ 284 
t?evised Jcmuarv 1965