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Convair XB-53
par CarrK Sam 18 Sep 2010, 17:34
Dans la série projets de Convair, le XB-53. Sur Wikipedia version anglaise
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The Convair XB-53 was a proposed jet powered medium bomber aircraft, designed by Convair for the United States Army Air Force.
With a radical tailless, forward-swept wing design, the aircraft appeared futuristic, however the project was cancelled before either of the two prototypes were completed.
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The Convair XB-53 was a proposed jet powered medium bomber aircraft, designed by Convair for the United States Army Air Force.
With a radical tailless, forward-swept wing design, the aircraft appeared futuristic, however the project was cancelled before either of the two prototypes were completed.
CarrK- CLUB
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Re: Convair XB-53
par CarrK Sam 18 Sep 2010, 17:36
Design and development
The project was originally designated XA-44 in 1945 under the old "attack" category.
An unusual forward-swept wing-design powered by three J35-GE turbojets, the project was developed in parallel with Convair's XB-46.
It would have a wing with a 30° forward-sweep and 8° dihedral that borrowed from German wartime research.
The swept-forward configuration would give the aircraft a greater climb rate and maneuverability.
It looked promising enough at one point that the Army Air Force considered cancelling the XB-46 in favor of the XA-44 since there was not enough funding for both.
The project was originally designated XA-44 in 1945 under the old "attack" category.
An unusual forward-swept wing-design powered by three J35-GE turbojets, the project was developed in parallel with Convair's XB-46.
It would have a wing with a 30° forward-sweep and 8° dihedral that borrowed from German wartime research.
The swept-forward configuration would give the aircraft a greater climb rate and maneuverability.
It looked promising enough at one point that the Army Air Force considered cancelling the XB-46 in favor of the XA-44 since there was not enough funding for both.
CarrK- CLUB
- Messages : 761
Localisation : Paris
Re: Convair XB-53
par CarrK Sam 18 Sep 2010, 17:38
Classified as a medium bomber, the XB-53 would have carried up to 12,000 pounds of bombs as well as 40 High Velocity Aerial Rockets (HVAR) mounted on underwing pylons.
Convair argued for completion of the XB-46 prototype as a flying testbed sans armament and other equipment and substitution of two XA-44s for the other two B-46 airframes on contract.
The Air Force ratified this in June 1946 but the project did not progress, nor were additional B-46s built.
The XA-44 was redesignated XB-53 in 1948 when the "attack" category was dropped but the project was cancelled before the two prototypes were completed.
The XA-44 program was reinstated in February 1949 but only for a short while.
Convair argued for completion of the XB-46 prototype as a flying testbed sans armament and other equipment and substitution of two XA-44s for the other two B-46 airframes on contract.
The Air Force ratified this in June 1946 but the project did not progress, nor were additional B-46s built.
The XA-44 was redesignated XB-53 in 1948 when the "attack" category was dropped but the project was cancelled before the two prototypes were completed.
The XA-44 program was reinstated in February 1949 but only for a short while.
CarrK- CLUB
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Re: Convair XB-53
par CarrK Sam 18 Sep 2010, 17:39
Specifications (XB-53)
General characteristics
* Crew: 4
* Length: 79 ft 6 in (24.2 m)
* Wingspan: 80 ft 7 in (24.6 m)
* Height: 23 ft 8 in (7.22 m)
* Wing area: 1,370 ft² ()
* Empty weight: 31,760 lb ()
* Loaded weight: 60,000 lb ()
* Max takeoff weight: 60,000 lb (27,000 kg)
* Powerplant: 3× General Electric J35 turbojets, 4,000 lbf (18 kN) each
General characteristics
* Crew: 4
* Length: 79 ft 6 in (24.2 m)
* Wingspan: 80 ft 7 in (24.6 m)
* Height: 23 ft 8 in (7.22 m)
* Wing area: 1,370 ft² ()
* Empty weight: 31,760 lb ()
* Loaded weight: 60,000 lb ()
* Max takeoff weight: 60,000 lb (27,000 kg)
* Powerplant: 3× General Electric J35 turbojets, 4,000 lbf (18 kN) each
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Localisation : Paris
Re: Convair XB-53
par CarrK Sam 18 Sep 2010, 17:41
Performance (estimated)
* Maximum speed: 580 mph (500 knots, 930 km/h)
* Range: 2,000 mi (1,700 nm, 3,200 km)
* Service ceiling: 44,000 ft (13,400 m)
* Rate of climb: Unknown ()
* Wing loading: Unknown ()
* Thrust/weight: Unknown
Armament
* Bombs: 12,000 lb (5,400 kg)
* Maximum speed: 580 mph (500 knots, 930 km/h)
* Range: 2,000 mi (1,700 nm, 3,200 km)
* Service ceiling: 44,000 ft (13,400 m)
* Rate of climb: Unknown ()
* Wing loading: Unknown ()
* Thrust/weight: Unknown
Armament
* Bombs: 12,000 lb (5,400 kg)
CarrK- CLUB
- Messages : 761
Localisation : Paris
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