page_title: McDonnell FH Phantom
section_title: Design and development
hierarchical_section_title: McDonnell FH Phantom / Design and development
caption_attribution_description: English: A U.S. Navy McDonnell FH-1 Phantom of Fighter Squadron 17A (VF-17A) "Phantom Fighters" taxis to the catapult during carrier qualifications on the light aircraft carrier USS Saipan (CVL-48), in May 1948.
context_page_description: The McDonnell FH Phantom was a twinjet fighter aircraft designed and first flown during World War II for the United States Navy. The Phantom was the first purely jet-powered aircraft to land on an American aircraft carrier and the first jet deployed by the United States Marine Corps. Although with the end of the war, only 62 FH-1s were built, it helped prove the viability of carrier-based jet fighters. As McDonnell's first successful fighter, leading to the development of the follow-on F2H Banshee, which was one of the two most important naval jet fighters of the Korean War, it would also establish McDonnell as an important supplier of navy aircraft. When McDonnell chose to bring the name back with the Mach 2–class McDonnell Douglas F-4 Phantom II, it launched what would become the most versatile and widely used western combat aircraft of the Vietnam War era, adopted by the USAF and the US Navy, remaining in use with various countries to the present day.
  The FH Phantom was originally designated the FD Phantom, but the designation was changed as the aircraft entered production.
context_section_description: In early 1943, aviation officials at the United States Navy were impressed with McDonnell's audacious XP-67 Bat project. McDonnell was invited by the navy to cooperate in the development of a shipboard jet fighter, using an engine from the turbojets under development by Westinghouse Electric Corporation. Three prototypes were ordered on 30 August 1943 and the designation XFD-1 was assigned. Under the 1922 United States Navy aircraft designation system, the letter "D" before the dash designated the aircraft's manufacturer. The Douglas Aircraft Company had previously been assigned this letter, but the USN elected to reassign it to McDonnell because Douglas had not provided any fighters for navy service in years.
  McDonnell engineers evaluated a number of engine combinations, varying from eight 9.5 in (24 cm) diameter engines down to two engines of 19 inch (48 cm) diameter. The final design used the two 19 in (48 cm) engines after it was found to be the lightest and simplest configuration. The engines were buried in the wing root to keep intake and exhaust ducts short, offering greater aerodynamic efficiency than underwing nacelles, and the engines were angled slightly outwards to protect the fuselage from the hot exhaust blast. Placement of the engines in the middle of the airframe allowed the cockpit with its bubble-style canopy to be placed ahead of the wing, granting the pilot excellent visibility in all directions. This engine location also freed up space under the nose, allowing designers to use tricycle gear, thereby elevating the engine exhaust path and reducing the risk that the hot blast would damage the aircraft carrier deck. The construction methods and aerodynamic design of the Phantom were fairly conventional for the time; the aircraft had unswept wings, a conventional empennage, and an aluminum monocoque structure with flush riveted aluminum skin. Folding wings were used to reduce the width of the aircraft in storage configuration. Provisions for four .50-caliber (12.7 mm) machine guns were made in the nose, while racks for eight 5 in (127 mm) High Velocity Aircraft Rockets could be fitted under the wings, although these were seldom used in service. Adapting a jet to carrier use was a much greater challenge than producing a land-based fighter because of slower landing and takeoff speeds required on a small carrier deck. The Phantom used split flaps on both the folding and fixed wing sections to enhance low-speed landing performance, but no other high-lift devices were used. Provisions were also made for Rocket Assisted Take Off (RATO) bottles to improve takeoff performance.
  When the first XFD-1, serial number 48235, was completed in January 1945, only one Westinghouse 19XB-2B engine was available for installation. Ground runs and taxi tests were conducted with the single engine, and such was the confidence in the aircraft that the first flight on 26 January 1945 was made with only the one turbojet engine. During flight tests, the Phantom became the first naval aircraft to exceed 500 mph (434 kn, 805 km/h). With successful completion of tests, a production contract was awarded on 7 March 1945 for 100 FD-1 aircraft. With the end of the war, the Phantom production contract was reduced to 30 aircraft, but was soon increased back to 60.
  The first prototype was lost in a fatal crash on 1 November 1945, but the second and final Phantom prototype (serial number 48236) was completed early the next year and became the first purely jet-powered aircraft to operate from an American aircraft carrier, completing four successful takeoffs and landings on 21 July 1946, from Franklin D. Roosevelt near Norfolk, Virginia. At the time, she was the largest carrier serving with the U.S. Navy, allowing the aircraft to take off without assistance from a catapult. The second prototype crashed on 26 August 1946.
  Production Phantoms incorporated a number of design improvements. These included provisions for a flush-fitting centerline drop tank, an improved gunsight, and the addition of speed brakes. Production models used Westinghouse J30
caption: A U.S. Navy FH-1 of VF-17A Phantom Fighters taxies to the catapult during carrier qualifications on the light aircraft carrier Saipan, in May 1948
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