Smithsonian Report. I95x 1 luiivAr 



Plate 9 



1. Gruniman FllF-1. Use of the NACA-developed "area rule" concept for decreasing drag 

 rise at transonic speeds g-a\'e this "Tiger" fighter plane supersonic performance. The 

 "wasp-waisted" Navy carrier plane uses one-third less thrust than other airplanes nf 

 equivalent performance. 



2. West Area, Langle\' Aeronautical Laborator}', Langley Field, \'a. 



