Curtiss BF2C Goshawk

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BF2C-1 Goshawk
Curtiss BF2C-1 Goshawk - GPN-2000-001239.jpg
Curtiss BF2C-1 - Model 67A (on the right)
Role Carrierborne Fighter and fighter-bomber
National originUnited States
Manufacturer Curtiss Aeroplane and Motor Company
Introduction1933
Retired1949
Primary users United States Navy
Republic of China
Royal Thai Air Force
Argentine Air Force
ProducedOctober 1934
Number built164 plus 2 prototypes
Developed from Curtiss F11C Goshawk

The Curtiss BF2C Goshawk (Model 67) was a United States 1930s naval biplane aircraft that saw limited success and was part of a long line of Hawk Series airplanes made by the Curtiss Aeroplane and Motor Company for the American military, and for export as the Model 68 Hawk III.

Contents

Design and development

The United States Navy and Curtiss felt that the F11C-2 possessed development potential, and the Navy decided to procure a variant with retractable landing gear. This variant, which still had the F11C-2's classic "Hawk" wood wing with its flat-bottomed Clark Y airfoil, was designated XF11C-3 by the Navy and Model 67 by Curtiss. The main gear retraction system was inspired by the Grover Loening-designed system on the Grumman XFF-1 prototype, and was manually operated. [1]

The XF11C-3 was first delivered to the USN in May 1933, with a Wright R-1820-80 radial engine rated at 700  hp (520  kW ). Trials revealed a 17 mph (27 km/h) increase in speed over the F11C-2, but the extra weight caused a decrease in maneuverability. The Navy felt the handling degradation was more than offset by the increase in speed, however. During testing the XF11C-3 had its wood-framed wing replaced by the metal-structured, biconvex, NACA 2212 airfoil wing, and soon after was redesignated XBF2C-1 (Model 67A) in keeping with the new Bomber-Fighter category. [1]

Operational history

Three BF2C-1s of VB-5 from USS Ranger in 1934. Curtiss BF2C-1 Goshawk VB-5 NAN1-86.jpg
Three BF2C-1s of VB-5 from USS Ranger in 1934.
Chinese Hawk III, the primary fighter-attack of the Chinese Nationalist Air Force opposing the Japanese invasion in 1937, until superseded by Polikarpov I-15 and I-16 fighters Curtiss Model 68 Hawk III.jpg
Chinese Hawk III, the primary fighter-attack of the Chinese Nationalist Air Force opposing the Japanese invasion in 1937, until superseded by Polikarpov I-15 and I-16 fighters

Twenty-seven BF2C-1 were ordered by the U.S. Navy, with a raised rear turtle deck, a semi-enclosed cockpit, and a metal-framed lower wing. It was armed with two .30 calibre Browning machine guns and three hardpoints for 500 lb (230 kg) of external stores. Delivered in October 1934, they were assigned to VB-5B on the aircraft carrier USS Ranger, but served only a few months before difficulties with the landing gear led to their withdrawal. [2] In spite of its short service run, many of the innovations developed for the Goshawk line found wide use in Navy aircraft in the years that followed. They were the last Curtiss fighter accepted for service with the U.S. Navy. [2]

The export version Model 68 Hawk III reverted to the classic wood/Clark Y wings and was powered by a 770 hp (570 kW) R-1820-F53. Chinese Hawk IIIs served as multi-purpose aircraft when combat operations against the Imperial Japanese Army and Navy Air Forces began in earnest in August 1937, particularly with the Battle of Shanghai and Nanjing, and were considered the Nationalist Chinese Air Force's frontline fighter-pursuit aircraft along with their inventory of Hawk IIs, Boeing Model 281 "Peashooters" and Fiat CR.32s. Col. Gao Zhihang scored a double-kill against the superior Mitsubishi A5M "Claude" (predecessor of the A6M "Zero") over Nanjing on 12 October, 1937 while at the controls of his Hawk III numbered "IV-I" (4th Pursuit Group, Commander). [3]

As the air-interdiction and close-air support for the National Revolutionary Army of China continued at the Battle of Shanghai on 14 October, 1937, the Chinese Air Force launched a major strike against Japanese positions in Shanghai at 16:00 hours with a uniquely mixed force of three Curtiss Hawk IIIs escorting three B-10s, two He 111As, five O-2MCs and five Gammas from Nanjing in the late-afternoon, and then one strike launched every hour from Nanking to Shanghai in the evening until 03:00 hours on 15 October. [4] These combination of attacks with the Hawk IIIs were used against both the Imperial Japanese Army and Navy Air Forces, and against both ground and naval targets with considerable success through the end of 1937, before being superseded by the better-armed and faster Polikarpov I-15 and I-16 fighters that were supplied to the Chinese Air Force through the Sino-Soviet Treaty of 1937. [5]

In early 1935, Thailand placed an order for 24 Curtiss Hawk IIIs at a cost of 63,900 Baht each, and a manufacturing license was also bought. The first 12 Hawk IIIs were shipped to Thailand in August and the remaining 12 arrived in late 1935, which were named Fighter Type 10. A total of 50 Hawk IIIs were locally built during 1937 and 1939. The type was used against the French in the Franco-Thai War and the Japanese invaders in December 1941, then relegated for use as trainers. Some of these aircraft were still active in 1949 and one airframe (KH-10) survives in the Royal Thai Air Force Museum. [6] [7]

The Model 79 Hawk IV demonstrator had a fully enclosed cockpit and a 790 hp (590 kW) R-1820-F56.

Variants

XBF2C-1 Hawk
The XF11C-3 prototype redesignated as a fighter-bomber.
BF2C-1 Goshawk (Model 67A)
Production version of the XF11C-3; 27 built.
Hawk III (Model 68)
Export version of BF2C-1 with an 770 hp (570 kW) R-1820-F53 for Argentina, China, Thailand and Turkey; 137 built.
Hawk IV (Model 79)
Export version with an 790 hp (590 kW) R-1820-F56 engine; one demonstrator built.

Operators

Curtiss BF2C Goshawk at the Royal Thai Air Force Museum RTAF Curtiss BF2C Goshawk.jpg
Curtiss BF2C Goshawk at the Royal Thai Air Force Museum
Flag of Argentina.svg  Argentina
Flag of the Republic of China.svg  China
Flag of Thailand.svg  Thailand
Flag of Turkey.svg  Turkey
Flag of the United States (23px).png  United States

Specifications (Hawk III)

Data from Curtiss Aircraft 1907–1947, [8] The complete encyclopedia of world aircraft [9]

General characteristics

Performance

Armament

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References

  1. 1 2 Eden, Paul; Moeng, Soph (2002), The Complete Encyclopedia of World Aircraft, London: Amber Books, ISBN   978-0-7607-3432-2
  2. 1 2 Swanborough, Gordon; Bowers, Peter M. (1976), United States Military Aircraft Since 1911, Annapolis, USA: Naval Institute Press, ISBN   978-0-87021-968-9
  3. Bergin, Bob (2017-08-22). "High Aviation Ideals". HistoryNet. Retrieved 2020-11-20. Colonel Gao, with several of the Hawks, went after the A5Ms... which were agile open-cockpit monoplanes, far superior to anything the Chinese had.... In the ensuing melee, Gao drove one down, then jumped by three others engaging him in a lengthy contest. Two A5Ms broke off while a third flew on, making loop after loop, its pilot dead at the controls. Gao was credited with two A5M kills, an impressive achievement.
  4. Gustavsson, Hakans. "Håkans Aviation page – Sino-Japanese Air War 1937". Biplane Fighter Aces - China. Archived from the original on 2005-03-11. Retrieved 2020-12-21. 14 October 1937, at 16:00, 18 aircraft (three Hawk IIIs, three Martin 139WCs (B-10), two Heinkel He111s, five Douglas O-2MCs and five Northrop Gammas) took off from Nanking to attack Shanghai airfields and warehouses. They barely escaped the attack on their airbase by five Japanese bombers escorted by five fighters, which arrived about five minutes after they took off. The Japanese planes bombed the vacant airfield without inflicting much damage... a few hours later, starting at 21:00, one aircraft was sent every hour from Nanking to bomb targets in Shanghai until 03:00 on 15 October.
  5. Gustavsson, Hakans. "Håkans Aviation page – Sino-Japanese Air War 1937". Biplane Fighter Aces - China. Archived from the original on 2005-03-11. Retrieved 2020-12-21. 14 October 1937, at 16:00, 18 aircraft (three Hawk IIIs, three Martin 139WCs, two Heinkel He111s, five Douglas O-2MCs and five Northrop Gammas) took off from Nanking to attack Shanghai airfields and warehouses... barely avoiding attacks by five Japanese bombers escorted by five fighters, that arrived over their airbase about five minutes after taking off. The Japanese planes bombed the vacant airfield without inflicting much damage... a few hours later, starting at 21:00, one aircraft was sent every hour to bomb targets in Shanghai until 03:00 on 15 October.
  6. Building 2, Royal Thai Air Force Museum, archived from the original on 2013-10-25, retrieved 2008-11-07. The RTAF Museum is home to the only surviving Hawk III
  7. Curtiss Hawk 3, Peter Lewis Designs, retrieved 2008-11-07. Unofficial site that has a better photo and a bit more history.
  8. Bowers, Peter M. (1979). Curtiss aircraft, 1907-1947. London: Putnam. pp. 274–284. ISBN   0370100298.
  9. Eden, Paul; Moeng, Soph, eds. (2002). The complete encyclopedia of world aircraft. Barnes & Noble Books. p. 515. ISBN   0-7607-3432-1.
  10. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Further reading