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Curtiss XP-37 (Allison Hawk)

Fighter Prototype

Curtiss XP-37 (Allison Hawk)

Fighter Prototype

OVERVIEW
SPECIFICATIONS
ARMAMENT
VARIANTS
HISTORY
MEDIA
OVERVIEW



The Curtiss XP-37 was an attempt by the USAAC to transform the radial-powered P-36 Hawk into an inline piston-engined fighter.
National Flag Graphic
ORIGIN: United States
YEAR: 1937
MANUFACTURER(S): Curtiss-Wright - USA
PRODUCTION: 14
OPERATORS: United States (cancelled)
SPECIFICATIONS



Unless otherwise noted the presented statistics below pertain to the Curtiss YP-37 model. Common measurements, and their respective conversions, are shown when possible.
CREW: 1
LENGTH: 28.54 feet (8.7 meters)
WIDTH: 37.73 feet (11.5 meters)
HEIGHT: 8.20 feet (2.5 meters)
WEIGHT (EMPTY): 4,575 pounds (2,075 kilograms)
WEIGHT (MTOW): 6,030 pounds (2,735 kilograms)
ENGINE: 1 x Allison V-1710 inline piston engine developing 1,150 horsepower and driving a three-bladed propeller in the nose.
SPEED (MAX): 342 miles-per-hour (550 kilometers-per-hour; 297 knots)
RANGE: 621 miles (1,000 kilometers; 540 nautical miles)
CEILING: 32,808 feet (10,000 meters; 6.21 miles)
RATE-OF-CLIMB: 3,400 feet-per-minute (1,036 meters-per-minute)




ARMAMENT



None Fitted.
VARIANTS



Series Model Variants
• XP-37 - Prototype designation
• YP-37 - Service Test aircraft; batch of thirteen ordered.
• P-37 - Assumed in-service designation


HISTORY



Detailing the development and operational history of the Curtiss XP-37 (Allison Hawk) Fighter Prototype.  Entry last updated on 5/13/2016. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
The American Curtiss P-36 "Hawk" marked one of the earliest of the all-modern fighters to appear in the years leading up to World War 2 (1939-1945). It was joined by the likes of the British Hawker Hurricane and the German Messerschmitt Bf 109 but failed to find the same wartime success as its contemporaries. Completed with a Pratt & Whitney "Twin Wasp" air-cooled radial piston engine, 215 examples were built as the P.36 and a further 900 were exported under the "Hawk 75" designation. The design was eventually developed into the classic P-40 "Warhawk".

The United States Army Air Corps (USAAC) sought additional value in their P-36 to the point that they commissioned Curtiss in 1937 to develop the aircraft with the Allison V-1710 turbo-supercharged inline piston engine of 1,150 horsepower. This begat the prototype "XP-37" monoplane fighter which retained much of the original's components including its well-streamlined airframe. To compensate for the length and weight of the new engine installation at the nose (and to better balance the revised center-of-gravity), the cockpit was positioned further aft along the dorsal spine which immediately differentiated it from the earlier P-36.

In this configuration, the aircraft was flown for the first time during April 1937 and managed a maximum speed of 340 miles per hour against the P-36A's 313 mph top speed. However, the all-important turbo-supercharger proved troublesome during testing and there grew concern about the nose length and position of the wing mainplanes which considerably inhibited the pilot's forward vision. Views to the rear of the aircraft were no better as the raised fuselage spine and tail planes further masked any approaching danger from the rear.

Nevertheless, USAAC authorities were sold on the potential performance gains of this sleek entry and ordered the XP-37 in a service test form as the "YP-37" through a thirteen-strong batch order. Engineers continued to work on the turbo-supercharger but reliability remained an issue. A developmental-minded YP-37 managed a first flight during June of 1939 but the temperamental aircraft was soon passed over for a more promising - and conventional - venture, this to become the P-40 Warhawk which became an ultra-critical American fighter of the early-war years.




MEDIA









Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

Image of collection of graph types

Relative Maximum Speed Rating
Hi: 400mph
Lo: 200mph
    This entry's maximum listed speed (342mph).

    Graph average of 300 miles-per-hour.
City-to-City Ranges
NYC
 
  LDN
LDN
 
  PAR
PAR
 
  BER
BER
 
  MSK
MSK
 
  TKY
TKY
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the Curtiss YP-37's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
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Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
14
14

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


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A2A
Interception
UAV
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AEW
MEDEVAC
EW
Maritime/Navy
SAR
Aerial Tanker
Utility/Transport
VIP
Passenger
Business
Recon
SPECOPS
X-Plane/Development
A2A=Air-to-Air; UAV=Unmanned; CAS=Close Support; ASW=Anti-Submarine; AEW=Airborne Early Warning; MEDEVAC=Medical Evac; EW=Electronic Warfare; SAR=Search-Rescue
Commitments / Honors
Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
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Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
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Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
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Military lapel ribbon for the Yom Kippur War
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* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.