Curtiss F11C Goshawk

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F11C Goshawk
Curtiss F11c2 a.jpg
XF11C-2 Goshawk, piloted by Curtiss test pilot William J. Crosswell, pictured during a test flight, 4 November 1932.
Role Carrier-based Fighter and fighter-bomber
National originUnited States
Manufacturer Curtiss Aeroplane and Motor Company
First flightSeptember 1932
IntroductionApril 1932
Primary users United States Navy
Chinese Nationalist Air Force
Colombian Air Force
ProducedOctober 1932
Number built28 plus 2 prototypes
Variants Curtiss BF2C Goshawk

The Curtiss F11C Goshawk is an American naval biplane fighter aircraft that saw limited success. It was part of a long line of Curtiss Hawk airplanes built by the Curtiss Aeroplane and Motor Company for the American military.

Contents

Design and development

In April 1932, when Curtiss was planning the Model 35B, the United States Navy contracted with the manufacturer for an improved derivative of the Model 34C, F6C as the F11C. It contained major changes that included the 600  hp (450  kW ) Wright R-1510-98 radial engine, single-leg cantilever main landing-gear units, a slight increase in the interplane gap, metal- rather than fabric-covered control surfaces, and armament based on two .30 in (7.62 mm) fixed forward-firing machine guns supplemented by a hardpoint under the fuselage for the carriage of a 474 lb (215 kg) bomb, or an auxiliary fuel tank. Curtiss designed the type as the Model 64 Goshawk, with the U.S. Navy designation XF11C-1 (later XBFC-1 after the adoption of the BF for Bomber-Fighter category). The aircraft was of fabric-covered metal construction, used the wing cell structure of the dismantled YP-23, and was delivered in September 1932. [1]

Shortly before ordering the XF11C-1, the Navy had bought a company-owned Model 64A demonstrator. This had a Wright R-1820-78 Cyclone engine, slightly longer main landing-gear legs carrying wheels with low-pressure tires, a tailwheel in place of the tailskid, fabric-covered control surfaces on the tail, and external provision for underwing racks for light bombs as well as an under-fuselage hardpoint for either a 50 gal (189 L) fuel tank or the crutch that would swing a bomb clear of the propeller disc before release in a dive-bombing attack. [1]

Flight trials of this XF11C-2 (later redesignated as the XBFC-2) revealed the need for a small number of minor changes. After making the changes, the XF11C-2 came to be regarded as the prototype for the F11C-2, of which 28 examples were ordered as dual-role fighter-bombers in October 1932. [1]

From March 1934, the aircraft were revised with a semi-enclosed cockpit and a number of other modifications before they received the revised designation BFC-2 in recognition of their fighter-bomber or, as the Navy would have it, bomber-fighter role [1] The last aircraft in the XF11C-2 contract was converted to the prototype XF11C-3, incorporating a more powerful R-1820-80 engine and a hand-operated retractable landing gear. [2]

Curtiss XF11C-3 variant flying over the clouds with landing gear and tailhook retracted Curtiss XF11C-3 in Flight.jpg
Curtiss XF11C-3 variant flying over the clouds with landing gear and tailhook retracted
XF11C-3 Goshawk in test flight F11C Goshawk.jpeg
XF11C-3 Goshawk in test flight

Operational history

The only U.S. Navy units to operate the F11C-2 were the Navy's famous "High Hat Squadron", VF-1B, aboard the carrier Saratoga, and VB-6 briefly assigned to Enterprise. In March 1934, when the aircraft were redesignated BFC-2, the "High Hat Squadron" was renumbered VB-2B, and then VB-3B, and retained its BFC-2s until February 1938. VB-6 never actually embarked on Enterprise with the BFC bombers. [3]

The Chinese F11C/Hawk II during WW2 Curtiss Hawk II in Chinese service.jpg
The Chinese F11C/Hawk II during WW2

The F11C-2 Goshawk was produced in two export versions as the Hawk I and Hawk II fighters. Essentially a modified XF11C-2, the Hawk II was fitted with a Wright R-1820F-3 Cyclone rated at 710 hp (530 kW) at 1,676 m (5,499 ft) and 356 liters of fuel while the Hawk I had 189 liters of internal fuel. Both versions carried the same armament as the production F11C-2. Only the Hawk II was exported in quantity with Turkey, the first customer taking delivery of 19 on August 30, 1932. Colombia placed an order at the end of October 1932, receiving an initial batch of four twin float-equipped Hawk IIs, the first of a total of 26 float fighters delivered by the end of July 1934. The Colombian Air Force used Hawk II and F11C-2 based in floats in the Colombia-Peru War in 1932-1933. Nine Hawk IIs were supplied to Bolivia, of which three had interchangeable wheel/float undercarriages; four were delivered to Chile, four to Cuba, two to Germany, one to Norway and 12 to Thailand as Hawk IIIs.

The Chinese Nationalist Air Force received 52 F11Cs as Hawk IIs and fought against the Japanese during the Second Sino-Japanese War. Hawk II squadron commander Captain Chan Kee-Wong of the 28th Squadron, 5th Fighter Group based at Chuyung Airbase for the defense of Nanking at the outbreak of the war against the Imperial Japanese invasion, made a partial claim in the shooting-down of a Mitsubishi G3M medium-heavy bomber on 15 August, 1937. He and half of his squadron were soon dispatched to Taiyuan in the northern front of the war in China, and famously shot down Major Hiroshi Miwa (former military flight instructor for Zhang Xueliang's Fengtian Army air corps), [4] commander of the 16th Hiko Rentai, 1st Daitai squadron of Kawasaki Ki-10 fighters during the Battle of Taiyuan [5] It was the main battlefield of the F11C in World War II. [6]

Thai Hawk IIIs saw action during World War II, including against the Royal Air Force. On 8 April 1944, a Thai Hawk III was shot down by a No. 211 Squadron RAF Bristol Beaufighter over Lamphun, the pilot of the downed aircraft escaping by parachute. [7]

Variants

XF11C-1 (Model 64)
First prototype derived from the F6C Hawk.
XF11C-2 (Model 64A)
Second prototype, redesignated XBFC-2.
F11C-2 (Model 64A)
Production version, redesignated BFC-2; 28 built.
XF11C-3 (Model 67)
One F11C-2 fitted with retractable undercarriage and a 700 hp (520 kW) R-1820-80, later redesignated XBF2C-1 fighter-bomber.
BFC-2 Hawk
Redesignation of F11C-2.

Operators

Colombian Air Force Hawk II F11C, during the Guepi Campaign. Hawk II F11C.jpg
Colombian Air Force Hawk II F11C, during the Güepí Campaign.
Udet's Curtiss Hawk II (D-IRIK) on display in the Polish Aviation Museum. Curtiss Hawk II - Muzeum Lotnictwa Krakow.jpg
Udet's Curtiss Hawk II (D-IRIK) on display in the Polish Aviation Museum.
Bandera de Bolivia (Estado).svg  Bolivia
Flag of Chile.svg  Chile
Flag of the Republic of China.svg  Republic of China
Flag of Colombia.svg  Colombia
Flag of Cuba.svg  Cuba
Flag of Germany (1935-1945).svg  Germany
Flag of Norway.svg  Norway
Flag of Thailand.svg  Thailand
Flag of Turkey.svg  Turkey
Flag of Peru.svg  Peru
Flag of the United States (1912-1959).svg  United States

Surviving aircraft

During the spring of 1933, Franz Muller who was a senior official in the Reich Air Ministry, informed Göring that he was approached by Udet to seek approval for the purchase of two Goshawks for dive bombing trials. Göring authorized the funds via the German Embassy in Washington DC. In October 1933 the pair of Goshawks arrived in Bremerhaven aboard the liner SS Europa . [8] Udet used one of these Goshawks (designated D-IRIK) in aerobatic exhibitions held during the 1936 Summer Olympics, the aircraft survived the war, was eventually found in a field outside Kraków, [9] now on display in the Polish Aviation Museum. [10]

A BFC-2 is in the National Naval Aviation Museum on NAS Pensacola, Florida. [11]

A Hawk III, the only one existing, has been restored by the Royal Thai Air Force Museum. The aircraft on display is painted with (Hanuman, white body) insignia identifying it as belonging to Wing 4. The Hawk III served in the RTAF between 1934–1949. [12]

Specifications (F11C-2) & (BFC-2)

Data from Curtiss Aircraft 1907–1947, [13] The Complete Encyclopedia of World Aircraft [14]

General characteristics

Performance

Armament

Notes

  1. 1 2 3 4 Eden and Moeng 2002
  2. "Photograph - 'Photograph of F11C-3 Goshawk aircraft'." U.S. Navy Museum (Pensacola), 31 January 2000. Retrieved: 13 May 2009.
  3. Swanborough and Bowers 1976
  4. 网易, 丘智贤 (2018-02-02). "广东队长太原击落日本驱逐之王三轮宽". news.163.com. Retrieved 2020-11-16. 1937年9月21日,击落日军著名飞行员三轮宽的我空军第二十八队队长陈其光 (照片) - 支那事变殊勋录刊登之日本陆军航空兵中佐三轮宽 (照片)
  5. Gustavsson, Hakans. "Chinese biplane fighter aces - Chan Kee-Wong". Biplane Fighter Aces - China. Retrieved 2020-11-16. Captain Chan found himself all alone facing three IJAAF Ki-10s led by Major Miwa; in what appeared to a challenge to "single combat" - Miwa dove at him from above, Chan countered by pulling his nose up to face Miwa head-on. Anticipating that Miwa would need to pull out of his dive after they pass - Chan pulled into a tight chandelle - into his manoeuvre even before Miwa passed him - Chan was able turn around - above and behind Miwa - taking advantage of his position for a zero-deflection shooting pass, Chan shot up Miwa's Ki-10, sending it crashing into a field near Ta Meng.
  6. Gustavsson, Håkan. "Curtiss Hawks in the Chinese Air Force". Biplane Fighter Aces from the Second World War. Retrieved 30 January 2013.
  7. Thomas 2005, pp. 73-74
  8. Hitler's Stuka Squadrons-The Ju 87 At War 1936-45 by John Ward
  9. Hitler's Generals: Udet (TV aeries)
  10. "Aircraft: Curtiss Hawk II". Muzeum Lotnictwa Polskiego. Retrieved 16 April 2023.
  11. "BFC-2 Goshawk". National Naval Aviation Museum. Archived from the original on 30 August 2016. Retrieved 16 April 2023.
  12. Trirat. "A Briefer History of the Royal Thai Air Force." Archived 2011-10-02 at the Wayback Machine nationmultimedia.com, October 2007. Retrieved: 30 August 30, 2011.
  13. Bowers, Peter M. (1979). Curtiss aircraft, 1907-1947. London: Putnam. pp. 274–277. ISBN   0370100298.
  14. Eden and Moeng 2002, p. 514.
  15. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Bibliography

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