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F-15 vs F-22


The F-15E Strike Eagle’s wing, for example, is a very neat piece of aerodynamic design, with a conical camber and an aerofoil section optimised to reduce wave drag at high speed. The last 20 per cent of the chord is thickened to delay boundary layer separation and so reduce drag.

Strike Eagle manoeuvre performance is also enhanced by the slab tailplanes, which operate differentially, in concert with the ailerons, in the rolling plane and together for pitch control.

They compensate to a great extent for loss of aileron effectiveness at extreme angles of attack, a vital factor in tight air combat. The aircraft’s twin fins are also positioned to receive vortex flow off the wing in order to maintain directional stability at high angles of attack.

The F-15C, the earlier single-seat interceptor version, has a wing loading of only 54lb (25kg) and this, together with two 23,450lbst (104.3kN) Pratt & Whitney F-100 advanced-technology turbofans, gives it an extraordinary turning ability and the combat thrust-to-weight ratio (1.3:1) necessary to retain the initiative in a fight.

The high thrust-to-weight ratio permits a scramble time of only six seconds, using 600ft (180m) of runway, and a maximum speed of more than Mach 2.5 gives the pilot the margin he needs if he has to break off an engagement.


F-15E Strike Eagle versus F-22 Raptor

CATEGORY

F-15E Strike Eagle

F-22 Raptor

Unit cost in USD millions

100-105

140-160

Fuel economy in km/l

0,38

0,22

Fuel economy in NM/g

0,89

0,51

Fuel tank capacity in litres

5950

8100

Fuel tank capacity in gallon

1571

2138

Range on internal fuel in km

2250

1800

Range on internal fuel in miles

1395

1116

Range on internal fuel in NM

1215

972

Powerplant/Engines

2 × Pratt & Whitney F100-229

2 x Pratt & Whitney F119-PW-100

Dry thrust in kN

2 x 78

2 x 116

Dry thrust in lbf

2 x 17500

2 x 26000

Afterburner in kN

2 x 129

2 x 155

Afterburner in lbf

2 x 29000

2 x 35000

Max. Speed in Mach

2,50

2,30

Max. Speed in km/h

3063

2818

Max. Speed in mph

1903

1751

Minimal thrust/weight ratio

0,72

0,84

Normal thrust/weight ratio

0,93

1,09

Maximal thrust/weight ratio

1,84

1,61

Overall length in meters

19,45

18,90

Overall length in ft

63,80

61,99

Wingspan in meters

13,05

13,56

Wingspan in ft

42,80

44,48

Height in meters

5,65

5,08

Height in ft

18,53

16,66

Wing area in sq meters

57,00

78,00

Wing area in sq ft

613,32

839,28

Empty weight in kg

14300

19700

Empty weight in lb

31460

43340

Maximal take-off weight in kg

36700

38000

Maximal take-off weight in lb

80740

83600

Minimal wing-loading in kg/m2

255

252

Normal wing-loading in kg/m2

504

375

Maximal wing-loading in kg/m2

651

487

Rate of climb in m/sec

254

280

Rate of climb in ft/min

50013

55132

First flight

1986

1997

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