Sikorsky S-40
The first S-40 delivered to Pan Am on
October 10, 1931. It was flown to the Anacostia Naval Air Station at
Washington D.C. to be christened by Mrs. Herbert Hoover the American
Clipper. After Mrs. Hoover smashed a bottle of water from the
Caribbean on the nose of the plane, Trippe called it a "flagship," and
"the first American example of the great airliner of tomorrow that will
speed trade and good will among nations." The Clipper designation
was born.
Span 114 ft 0 in
Chord 16 ft
Length (overall) 76 ft 8 in
Hull Length 48
ft 0 in
Height (overall) 23 ft 10 in
Angle of Incidence 2-1/2 deg
Diehedral 1-1/2 deg
Airfoil GS-1 Wing Area (incl ailerons and struts) 1875
sq ft
Ailerons 100 sq ft
Fin 49.5 sq ft
Rudder 57.5 sq ft
Stabilizers 149
sq ft
Elevators 104.5 sq ft
Gross Weight 34,000 lb
Empty Weight 24,748 lb
Useful Load 9,252 lb
Payload 5,902 lb
Seats 44
Wing Loading 14.4 lb/sq ft
Power Loading 14.76 lb/hp
High Speed 134.7 mph
Cruise Speed 115.0 mph
Landing Speed 65.0 mph
Ceiling 13,000 ft Climb (at S.L.) 712 fpm
Range 875
sm
Powerplant 4x P&W Hornet (575 hp * 1900 rpm each)
Fuel Capacity 1040
gals
Oil Capacity 80 gals
Certification ATC 454
Year of Introduction 1931
Production 3 (NC80V, NC81V, NC752V)
Cost $139,000
Manufactured by
Sikorsky, Bridgeport, CT Wing
Construction: Dural Spars, channel ribs,
fabric covered Hull Construction: Dural, Alclad covered
Landing gear:
Retractable, Sikorsky Brakes, Oleo-spring shock absorbers.
S-40 Names:
NC80V "American Clipper" NC81V "Caribbean Clipper" NC752V "Southern
Clipper"
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