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aeronewsline :: Accueil :: Histoire :: Aéronefs 1940 à 1944
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Re: P-36 Hawk ( H 75 )
par LayLand Mar 27 Avr 2010, 07:27
Then, on 16 June 1936, Curtiss received an order from USAAC for three prototypes designated Y1P-36.
LayLand- CLUB
- Messages : 579
Re: P-36 Hawk ( H 75 )
par LayLand Mar 27 Avr 2010, 07:29
The USAAC was concerned about political turmoil in Europe and about Seversky's ability to deliver P-35s in a timely matter, and therefore wanted a backup fighter.
LayLand- CLUB
- Messages : 579
Re: P-36 Hawk ( H 75 )
par LayLand Mar 27 Avr 2010, 07:37
Curtiss YP-37
In early 1937, the USAAC ordered Curtiss to adapt one P-36 to the new liquid-cooled turbo-supercharged [Vous devez être inscrit et connecté pour voir ce lien] engine with 1,150 hp (858 kW).
Designated XP-37, the aircraft used the original Model 75 airframe with radiators mounted on the sides of the fuselage around the engine.
In early 1937, the USAAC ordered Curtiss to adapt one P-36 to the new liquid-cooled turbo-supercharged [Vous devez être inscrit et connecté pour voir ce lien] engine with 1,150 hp (858 kW).
Designated XP-37, the aircraft used the original Model 75 airframe with radiators mounted on the sides of the fuselage around the engine.
LayLand- CLUB
- Messages : 579
Re: P-36 Hawk ( H 75 )
par LayLand Mar 27 Avr 2010, 07:39
The cockpit was moved far to the rear to make room for the radiators and to balance the aircraft.
The aircraft flew in April 1937, reaching 340 mph (547 km/h) at 20,000 ft (6,100 m).
Although the turbo-supercharger was extremely unreliable and visibility from the cockpit on takeoff and landing was virtually nonexistent, the USAAC was sufficiently intrigued by the promised performance to order 13 service test YP-37s.
The aircraft flew in April 1937, reaching 340 mph (547 km/h) at 20,000 ft (6,100 m).
Although the turbo-supercharger was extremely unreliable and visibility from the cockpit on takeoff and landing was virtually nonexistent, the USAAC was sufficiently intrigued by the promised performance to order 13 service test YP-37s.
LayLand- CLUB
- Messages : 579
Re: P-36 Hawk ( H 75 )
par LayLand Mar 27 Avr 2010, 07:44
Curtiss XP-42
In an attempt to improve the aerodynamics of the air-cooled piston engines, the fourth production P-36A
(serial 38-004), designated the XP-42, was equipped with a long streamlined cowling resembling that of a liquid-cooled engine.
In an attempt to improve the aerodynamics of the air-cooled piston engines, the fourth production P-36A
(serial 38-004), designated the XP-42, was equipped with a long streamlined cowling resembling that of a liquid-cooled engine.
LayLand- CLUB
- Messages : 579
Re: P-36 Hawk ( H 75 )
par LayLand Mar 27 Avr 2010, 07:46
The Curtiss XP-42 from the NACA Langley Research Center, Virginia (USA), in flight on 13 April 1945.
This highly modified Curtiss P-36A became the XP-42 when it was re-engined and took part in drag-reduction and
all-moving tail research with the NACA at Langley.
The last flight of this aircraft took place in April 1947. It was then scrapped in July 1947.
Photo Nasa
[Vous devez être inscrit et connecté pour voir cette image]
This highly modified Curtiss P-36A became the XP-42 when it was re-engined and took part in drag-reduction and
all-moving tail research with the NACA at Langley.
The last flight of this aircraft took place in April 1947. It was then scrapped in July 1947.
Photo Nasa
[Vous devez être inscrit et connecté pour voir cette image]
LayLand- CLUB
- Messages : 579
Re: P-36 Hawk ( H 75 )
par LayLand Mar 27 Avr 2010, 07:50
Twelve different designs were tried with little success - although the aircraft was faster than a standard P-36A, engine cooling problems were never resolved.
Since the new P-40 was faster, the project was cancelled.
Late in its service life, the sole XP-42 was fitted with an [Vous devez être inscrit et connecté pour voir ce lien] and used to study that control configuration.
Since the new P-40 was faster, the project was cancelled.
Late in its service life, the sole XP-42 was fitted with an [Vous devez être inscrit et connecté pour voir ce lien] and used to study that control configuration.
LayLand- CLUB
- Messages : 579
Re: P-36 Hawk ( H 75 )
par LayLand Mar 27 Avr 2010, 07:53
Operational history
Argentina
Argentina bought a number of the simplified, fixed landing gear Hawk 75Os, (intended for rough-field operations and ease of maintenance) and purchased a manufacturing license for the type.
These aircraft used the same engine, Wright Cyclone R-1820-G5 as the Martin 139WAA's (B-10) and Northrop 8A-2s used by the Argentine Army Aviation at the time.
Argentina
Argentina bought a number of the simplified, fixed landing gear Hawk 75Os, (intended for rough-field operations and ease of maintenance) and purchased a manufacturing license for the type.
These aircraft used the same engine, Wright Cyclone R-1820-G5 as the Martin 139WAA's (B-10) and Northrop 8A-2s used by the Argentine Army Aviation at the time.
LayLand- CLUB
- Messages : 579
Re: P-36 Hawk ( H 75 )
par LayLand Mar 27 Avr 2010, 07:56
Brazil
In March 1942, 10 USAAC P-36As were transferred to Brazil.
In March 1942, 10 USAAC P-36As were transferred to Brazil.
LayLand- CLUB
- Messages : 579
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