| 词条 | Fairchild XC-120 Packplane | |||||||||||||||||
| 释义 |
The Fairchild XC-120 Packplane was an American experimental transport aircraft first flown in 1950. It was developed from the company's C-119 Flying Boxcar, and was unique in the unconventional use of removable cargo pods that were attached below the fuselage, instead of possessing an internal cargo compartment. Design and developmentThe XC-120 Packplane began as a C-119B fuselage (48-330, c/n 10312) which was cut off at a point just below the flight deck. The wings were angled upwards between the engines and the fuselage, raising the fuselage by several feet and giving the plane an inverted gull wing appearance. Smaller diameter "twinned" wheels were installed forward of each of the main landing gear struts to serve as nosewheels, while the main struts were extended backwards. All four landing gear units, in matching "nose" and "main" sets, could be raised and lowered in a scissorlike fashion to lower the aircraft and facilitate the removal of a planned variety of wheeled pods which would be attached below the fuselage for the transport of cargo. The goal was to allow cargo to be preloaded into the pods; it was claimed that such an arrangement would speed up loading and unloading cargo.[1] Production aircraft were to be designated C-128. Operational historyOnly one XC-120 was built. Though the aircraft was tested extensively and made numerous airshow appearances in the early 1950s the project went no further. It was tested by the Air Proving Ground Command at Eglin Air Force Base, Florida, in 1951,[2] before the project was abandoned in 1952.[3] The prototype was eventually scrapped. Specifications (XC-120){{Aircraft specs|ref=[4] |prime units?=kts |genhide= |crew=Five (pilot, copilot, flight engineer, two loadmasters) |capacity=20,000 lb (2,700 cu.ft) |length m= |length ft=82 |length in=10 |length note= |span m= |span ft=106 |span in=6 |span note= |height m= |height ft=25 |height in=1 |height note= |wing area sqm= |wing area sqft=1447 |wing area note= |aspect ratio= |airfoil= |empty weight kg= |empty weight lb= |empty weight note= |gross weight kg= |gross weight lb= |gross weight note= |max takeoff weight kg= |max takeoff weight lb= |max takeoff weight note= |fuel capacity= |more general= |eng1 number=2 |eng1 name=Pratt & Whitney R-4360 Wasp Major |eng1 type=radial engines |eng1 kw= |eng1 hp=3250 |eng1 note=for takeoff |power original= |perfhide=Y |max speed kmh= |max speed mph= |max speed kts= |max speed note= |max speed mach= |cruise speed kmh= |cruise speed mph= |cruise speed kts= |cruise speed note= |stall speed kmh= |stall speed mph= |stall speed kts= |stall speed note= |never exceed speed kmh= |never exceed speed mph= |never exceed speed kts= |never exceed speed note= |minimum control speed kmh= |minimum control speed mph= |minimum control speed kts= |minimum control speed note= |range km= |range miles= |range nmi= |range note= |combat range km= |combat range miles= |combat range nmi= |combat range note= |ferry range km= |ferry range miles= |ferry range nmi= |ferry range note= |endurance= |ceiling m= |ceiling ft= |ceiling note= |g limits= |roll rate= |glide ratio= |climb rate ms= |climb rate ftmin= |climb rate note= |time to altitude= |lift to drag= |wing loading kg/m2= |wing loading lb/sqft= |wing loading note= |fuel consumption kg/km= |fuel consumption lb/mi= |power/mass= |more performance= |avionics= }} See also{{aircontent|related=
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}} References1. ^{{cite journal|magazine=Air Progress|title=Those Fabulous Flops|author=Micheal O'Leary|date=November 1978}} 2. ^Staff, "XC-120 Goes to Eglin for Tests", Aviation Week, 11 June 1951, Vol. 54, No. 24, p. 15. 3. ^{{cite web|url=http://www.joebaugher.com/usaf_serials/1946.html|title=1946-1948 USAAF-USAF Serial Numbers|work=joebaugher.com|date=July 13, 2017|accessdate=August 7, 2017}} 4. ^[https://www.flightglobal.com/FlightPDFArchive/1950/1950%20-%201771.PDF "Cargo Carrier Concept"]
External links{{commons category|Fairchild XC-120 Packplane}}
7 : United States military transport aircraft 1940–1949|Fairchild aircraft|Twin-boom aircraft|Modular aircraft|Aircraft first flown in 1950|Mid-wing aircraft|Twin piston-engined tractor aircraft |
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