kAVWEPS OO-EOT-80  AIRPLANE PERFORMANCE  50,ooc  45,ooc  40,ooc  35,ooc  30.000  t  I  0”  2  25,000  5  a  20,000  SEA  LEVEL’  \\  !  \  \\  CONSUMPTION  ,FIXED GEOMETRY  0  0.1  0.2  0.3  0.4  0.5  0.6  0.7  0.6  0.9  1.0  RATIO OF WANTITY)  AT ALTITUDE  (QUANTIT ’ I) AT SEA LEVEL  Figure 2.7 1. Approximate Eftect of Altitude  on Engine Performance  120 