Parade Ground Aircraft
A7	A10	B17	B24	B25	B26	B29	C45	C47	C118	C119	C121
C123	F15	F16	F82	P38	P47	P51	P63	SR71	T6	T28	T34
Other USAF Aircraft
Bombers
B1	B2	B45	B47	B50	B52	B58	F111	-	-	-	-
Cargo, VIP, & Tanker
C5	C17	C21	C24	C46	C97	C130	C133	C140	C141	KC10	KC135
Experimental & Prototype
D558	F107	X1	X2	X3	X4	X5	X15	XB70	YC14	-	-
Fighters
A1	F4	F5	F22	F84	F84F	F86	F86D	F100	F101	F102	F104
F105	F106	F117	P40	P80	-	-	-	-	-	-	-
Helicopters
CH3E	CH21	CH54A	H5A	HH43	MH60	R4B	R6A	UH1P	UH13	UH19	V22
Reconnaissance
E3	O1G	OV2	OV10	RF4	RF101	U2	-	-	-	-	-
Trainers
T6A	T33	T37	T38	T41	-	-	-	-	-	-	-

Boeing YC-14 Prototype Transport

The Boeing Model 953 design for STOL performance was based on the use of a supercritical wing, developed by NASA from the wind-tunnel research of Dr. Richard Whitcomb, which provides highly efficient performance from the wing at high subsonic speeds. To this wing Boeing added an advanced wing upper-surface blowing concept, mounting the twin turbofan engines forward and above the wing so that their efflux was exhausted over the wing (this location also gave the airplane a quieter noise footprint.). With the wing's leading-edge flaps and Coanda-type trailing-edge flaps extended, the high-speed airflow from the engines tended to cling to the upper surface of the wing/flap system and was thus directed downward to provide powered lift. It was the most efficient powered-lift system ever developed. The YC-14's basic mission was to carry large, bulky payloads into and out of short, rough dirt fields that were less than 2,000 feet (610m) long, even if an engine failed. It had a large fuselage to accommodate most tanks, trucks and armored personnel carriers used by the U.S. Army. The first Boeing YC-14 (#72-1873) took to the skies on 9 August 1976 and soon proved to have admirable performance.

Two aircraft were built, the second being tail number 72-1874. At the completion of testing in the late summer of 1977, the YC-14 prototypes were returned to Boeing for continuing development if the company so wished. Due to budget restrictions, no further government funding for development or procurement was made.

Primary Role: STOL transport (prototype) Production (all models): 2 aircraft

Specifications Wingspan: 129 feet (39.32m) Length: 131 feet, 8 inches (40.15m) Height: 48 feet, 4 inches (14.71m)

Armament: None

Engines: Two General Electric CF6-50D turbofans Thrust: 51,000 pounds (227kN) per engine

Crew: 3

Weights Operating Weight:Ê117,500 pounds (53,297kg) Max Takeoff Weight (STOL): 170,000 pounds (77,111kg) Max Takeoff Weight (Normal): 251,000 pounds (113,852kg) Max Payload (STOL): 27,000 pounds (12,247kg) with airfield length less than 1,875 feet (571.5m) Max Payload (Normal): 81,000 pounds (36,741kg) or 150 troops

Performance Cruise speed: 449 mph (723km/h) Max speed: 504 mph (811km/h)

Operational Radius: 460 miles (740km) Range: 3,190 miles (5,134km)

Climb Rate: 6,350 feet (1,935m) per minute

Service Ceiling: 45,000 feet (13,716m)

 

Parade Ground Aircraft
A7	A10	B17	B24	B25	B26	B29	C45	C47	C118	C119	C121
C123	F15	F16	F82	P38	P47	P51	P63	SR71	T6	T28	T34
Other USAF Aircraft
Bombers
B1	B2	B45	B47	B50	B52	B58	F111	-	-	-	-
Cargo, VIP, & Tanker
C5	C17	C21	C24	C46	C97	C130	C133	C140	C141	KC10	KC135
Experimental & Prototype
D558	F107	X1	X2	X3	X4	X5	X15	XB70	YC14	-	-
Fighters
A1	F4	F5	F22	F84	F84F	F86	F86D	F100	F101	F102	F104
F105	F106	F117	P40	P80	-	-	-	-	-	-	-
Helicopters
CH3E	CH21	CH54A	H5A	HH43	MH60	R4B	R6A	UH1P	UH13	UH19	V22
Reconnaissance
E3	O1G	OV2	OV10	RF4	RF101	U2	-	-	-	-	-
Trainers
T6A	T33	T37	T38	T41	-	-	-	-	-	-	-