Douglas D-558-1 Skystreak

Last updated
D-558-1 Skystreak
Douglas Skystreak D-588-I.jpg
Roleresearch aircraft
National originUnited States
Manufacturer Douglas Aircraft Company
First flight14 April 1947
StatusRetired
Primary user United States Navy
National Advisory Committee for Aeronautics
Number built3
Developed into Douglas D-558-2 Skyrocket

The Douglas Skystreak (D-558-1 or D-558-I) was an American single-engine jet research aircraft of the 1940s. It was designed in 1945 by the Douglas Aircraft Company for the U.S. Navy Bureau of Aeronautics, in conjunction with the National Advisory Committee for Aeronautics (NACA). The Skystreak was a turbojet-powered aircraft that took off from the ground under its own power and had unswept flying surfaces.

Contents

Development

The D558 program was conceived as a joint NACA/U.S. Navy research program for transonic and supersonic flight. As originally envisioned, there would be three phases to the D558 program: a jet-powered airplane, a mixed rocket/jet-powered configuration, and a design and mockup of a combat aircraft. [1] A contract for design and construction of six D558-1 aircraft for the first phase was issued on 22 June 1945. The original plan had been for six aircraft with a mixture of nose and side air inlets and varying wing airfoil sections. That plan was quickly reduced to three aircraft of a single configuration with a nose inlet. Plans for the second phase with mixed rocket/jet propulsion were also dropped. Instead, a new aircraft, the D558-2, was designed with mixed rocket and jet propulsion for supersonic flight.

Construction of the first 558-1 began in 1946 and was completed in January 1947. The fuselage used lightweight, high strength HK31 magnesium alloy extensively, while the wings were fabricated from more conventional aluminum alloys. The airframe was designed to withstand unusually high loads of up to 18 times gravity due to the uncertainties of transonic flight. The forward fuselage, including the cockpit, could be jettisoned from the aircraft in an emergency. [2] The aircraft was configured to carry more than 500 pounds (230 kg) of test equipment, including sensors (such as strain gauges and accelerometers) in 400 locations throughout the aircraft. One wing was pierced by 400 small holes for the pressure measurements required for calculating airloads. [3]

The Skystreaks were powered by one Allison J-35-A-11 engine (developed by General Electric as the TG-180) — one of the first axial-flow turbojets of American origin — and carried 230 US gallons (871 L) of jet fuel (kerosene).

Operational history

Pilots Carl and Caldwell with a D-558-1 at Muroc, in 1947. Douglas D-558-I with pilots Carl and Cladwell 1947.jpg
Pilots Carl and Caldwell with a D-558-1 at Muroc, in 1947.

All the Skystreaks were initially painted scarlet, which led to the nickname crimson test tube. NACA later had the color of the Skystreaks changed to white to improve optical tracking and photography. The first of three D-558-1 Skystreaks, BuNo 37970, made its maiden flight on 14 April 1947, at Muroc Army Air Field (later named Edwards AFB). Less than 4 months later, on August 20, this aircraft with Commander Turner Caldwell, USN, reached 640.744 mph (1,031.178 km/h; 556.791 kn) flying D-558-1 #1. This was recognised as an official world air speed record, as the World War II German Me 163B V18 Komet rocket fighter prototype that was claimed to have reached 1,130 km/h (702 mph; 610 kn) in July 1944 [4] [5] did so in secrecy and not under the strict conditions that regulate official records (presence of FIA officials as observers, timed runs in two directions to cancel out wind speed, etc). The D-558-1 #1 Skystreak's record lasted 5 days, and was broken by then-Lieutenant Colonel Marion Carl, USMC, going 10 mph (16 km/h; 8.7 kn) faster in D-558-1 #2, BuNo 37971. This aircraft was delivered to the NACA Muroc Flight Test Unit in April 1949 after 101 flights had been completed by the Navy, Air Force, and Douglas. This aircraft was never flown by the NACA. The D-558-1 #1 is located at the National Naval Aviation Museum at Naval Air Station Pensacola, Florida.

Following 27 flights by the Navy and Douglas the second D-558-1 aircraft was delivered to the NACA in November 1947. The D-558-1 #2 underwent extensive instrumentation by the NACA Muroc instrumentation section. The number 2 Skystreak made a total of 19 flights with the NACA before it crashed on takeoff due to compressor disintegration on May 3, 1948, killing NACA pilot Howard C. Lilly. The third D-558-I, BuNo 37972, aircraft was delivered to the NACA Muroc Flight Test Unit in 1949 after three Douglas test pilots and Howard Lilly had flown it. The number three aircraft took over the planned flight program of the D-558-1 #2. From the first flight in 1949 through 1953 the third Skystreak was flown in an intensive flight-research program by seven NACA test pilots, with a great deal of useful data collected on high-subsonic handling. The D-558-1 #3 made a total of 78 research flights with the NACA before being retired on June 10, 1953. The third Skystreak is on display at Carolinas Aviation Museum located at the Charlotte-Douglas International Airport (CLT) in Charlotte, North Carolina.

The Skystreak reached Mach 0.99 in level flight, but only flew supersonic in a dive. [3] In the public mind, much of the research performed by the D-558-1 Skystreaks was quickly overshadowed by Chuck Yeager and the supersonic Bell X-1 rocket plane. However, the Skystreak performed an important role in aeronautical research by flying for extended periods of time at transonic speeds, which freed the X-1 to fly for limited periods at supersonic speeds.

Aircraft Bureau Numbers (BuNo) and status

Specifications (D-558-1 Skystreak)

D-558-1 in flight D-558-1 in Flight - GPN-2000-000392.jpg
D-558-1 in flight

Data fromMcDonnell Douglas aircraft since 1920 : Volume I, [1] Jane's all the World's Aircraft 1949-50 [6]

General characteristics

Performance

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

Related Research Articles

<span class="mw-page-title-main">McDonnell FH Phantom</span> Early US twinjet fighter aircraft

The McDonnell FH Phantom is 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 only 62 FH-1s were built it helped prove the viability of carrier-based jet fighters. As McDonnell's first successful fighter, it led to the development of the follow-on F2H Banshee, which was one of the two most important naval jet fighters of the Korean War; combined, the two established McDonnell as an important supplier of navy aircraft.

<span class="mw-page-title-main">Lockheed P-80 Shooting Star</span> Fighter aircraft; first jet fighter in United States operational service

The Lockheed P-80 Shooting Star was the first jet fighter used operationally by the United States Army Air Forces (USAAF) during World War II. Designed and built by Lockheed in 1943 and delivered just 143 days from the start of design, production models were flying, and two pre-production models did see very limited service in Italy just before the end of World War II. Designed with straight wings, the type saw extensive combat in Korea with the United States Air Force (USAF) as the F-80.

<span class="mw-page-title-main">National Advisory Committee for Aeronautics</span> U.S. federal agency; predecessor to NASA

The National Advisory Committee for Aeronautics (NACA) was a United States federal agency founded on March 3, 1915, to undertake, promote, and institutionalize aeronautical research. On October 1, 1958, the agency was dissolved and its assets and personnel were transferred to the newly created National Aeronautics and Space Administration (NASA). NACA is an initialism, i.e., pronounced as individual letters, rather than as a whole word.

<span class="mw-page-title-main">Bell X-1</span> Experimental rocket-powered aircraft, the first airplane to break the sound barrier in level flight

The Bell X-1 is a rocket engine–powered aircraft, designated originally as the XS-1, and was a joint National Advisory Committee for Aeronautics–U.S. Army Air Forces–U.S. Air Force supersonic research project built by Bell Aircraft. Conceived during 1944 and designed and built in 1945, it achieved a speed of nearly 1,000 miles per hour in 1948. A derivative of this same design, the Bell X-1A, having greater fuel capacity and hence longer rocket burning time, exceeded 1,600 miles per hour in 1954. The X-1 aircraft #46-062, nicknamed Glamorous Glennis and flown by Chuck Yeager, was the first piloted airplane to exceed the speed of sound in level flight and was the first of the X-planes, a series of American experimental rocket planes designed for testing new technologies.

<span class="mw-page-title-main">McDonnell XF-88 Voodoo</span> Prototype fighter aircraft

The McDonnell XF-88 Voodoo was a long-range, twinjet fighter aircraft with swept wings designed for the United States Air Force. Although it never entered production, its design was adapted for the subsequent supersonic F-101 Voodoo.

<span class="mw-page-title-main">Miles M.52</span> 1942 British supersonic jet project

The Miles M.52 was a turbojet-powered supersonic research aircraft project designed in the United Kingdom in the mid-1940s. In October 1943, Miles Aircraft was issued with a contract to produce the aircraft in accordance with Air Ministry Specification E.24/43. The programme was highly ambitious for its time, aiming to produce an aircraft capable of a speed of at least 1,000 miles per hour (1,600 km/h) during level flight, and involved a very high proportion of cutting-edge aerodynamic research and innovative design work.

<span class="mw-page-title-main">Douglas D-558-2 Skyrocket</span> Experimental supersonic aircraft

The Douglas D-558-2 Skyrocket is a rocket and jet-powered research supersonic aircraft built by the Douglas Aircraft Company for the United States Navy. On 20 November 1953, shortly before the 50th anniversary of powered flight, Scott Crossfield piloted the Skyrocket to Mach 2, or more than 1,290 mph (2076 km/h), the first time an aircraft had exceeded twice the speed of sound.

<span class="mw-page-title-main">Douglas F3D Skyknight</span> U.S. twinjet night fighter aircraft (1951–1970)

The Douglas F3D Skyknight is an American twin-engined, mid-wing jet fighter aircraft designed and manufactured by the Douglas Aircraft Company.

<span class="mw-page-title-main">Douglas F5D Skylancer</span> US carrier-based jet-powered fighter

The Douglas F5D Skylancer is a development of the F4D Skyray jet fighter for the United States Navy. Starting out as the F4D-2N, an all-weather version of the Skyray, the design was soon modified to take full advantage of the extra thrust of the Pratt & Whitney J57 eventually fitted to the Skyray instead of the Westinghouse J40 originally planned.

<span class="mw-page-title-main">Convair F2Y Sea Dart</span> Hydroski jet fighter, U.S. Navy, 1953

The Convair F2Y Sea Dart was an American seaplane fighter aircraft that rode on twin hydro-skis during takeoff and landing. It flew only as a prototype, and never entered mass production. It is the only seaplane to have exceeded the speed of sound.

<span class="mw-page-title-main">North American T-2 Buckeye</span> Jet powered Training aircraft

The North American T-2 Buckeye was the United States Navy's intermediate training aircraft, intended to introduce U.S. Navy and U.S. Marine Corps student naval aviators and student naval flight officers to jets. It entered service in 1959, beginning the replacement process of the Lockheed T2V SeaStar, and was itself replaced by the McDonnell Douglas T-45 Goshawk in 2008.

<span class="mw-page-title-main">Douglas X-3 Stiletto</span> Experimental aircraft to test sustained supersonic flight

The Douglas X-3 Stiletto was a 1950s United States experimental jet aircraft with a slender fuselage and a long tapered nose, manufactured by the Douglas Aircraft Company. Its primary mission was to investigate the design features of an aircraft suitable for sustained supersonic speeds, which included the first use of titanium in major airframe components. Douglas designed the X-3 with the goal of a maximum speed of approximately 2,000 mph (3,200 km/h), but it was seriously underpowered for this purpose and could not even exceed Mach 1 in level flight. Although the research aircraft was a disappointment, Lockheed designers used data from the X-3 tests for the Lockheed F-104 Starfighter which used a similar trapezoidal wing design in a successful Mach 2 fighter.

<span class="mw-page-title-main">Northrop X-4 Bantam</span> American experimental jet aircraft

The Northrop X-4 Bantam was a prototype small twinjet aircraft manufactured by Northrop Corporation in 1948. It had no horizontal tail surfaces, depending instead on combined elevator and aileron control surfaces for control in pitch and roll attitudes, almost exactly in the manner of the similar-format, rocket-powered Messerschmitt Me 163 of Nazi Germany's Luftwaffe. Some aerodynamicists had proposed that eliminating the horizontal tail would also do away with stability problems at fast speeds resulting from the interaction of supersonic shock waves from the wings and the horizontal stabilizers. The idea had merit, but the flight control systems of that time prevented the X-4 from achieving any success.

<span class="mw-page-title-main">Ryan FR Fireball</span> American World War II-era jet and piston-engined fighter aircraft

The Ryan FR Fireball was an American mixed-power fighter aircraft designed by Ryan Aeronautical for the United States Navy during World War II. It was the Navy's first aircraft with a jet engine. Only 66 aircraft were built before Japan surrendered in August 1945. The FR-1 Fireball equipped a single squadron before the war's end, but did not see combat. The aircraft ultimately proved to lack the structural strength required for operations aboard aircraft carriers and was withdrawn in mid-1947.

<span class="mw-page-title-main">Douglas A2D Skyshark</span> US prototype carrier-based attack aircraft

The Douglas A2D Skyshark was an American turboprop-powered attack aircraft built by the Douglas Aircraft Company for the United States Navy. The program was substantially delayed by engine reliability problems, and was canceled because more promising jet attack aircraft had entered development and the smaller escort carriers the A2D was intended to utilize were being phased out.

<span class="mw-page-title-main">Northrop XP-79</span> Prototype flying wing fighter aircraft

The Northrop XP-79, USAAF project number MX-365, was a rocket and jet-powered flying wing fighter aircraft, designed by Northrop. The pilot operated the aircraft in a prone position, permitting him to withstand much greater g-forces in pitch. It also used a welded magnesium monocoque structure instead of riveted aluminum.

<span class="mw-page-title-main">John H. Griffith</span>

John H. Griffith was a test pilot for the National Advisory Committee for Aeronautics, one of the pilots of the Bell X-1.

<span class="mw-page-title-main">NASA AD-1</span> NASA experimental oblique wing aircraft

The NASA AD-1 was both an aircraft and an associated flight test program conducted between 1979 and 1982 at the NASA Dryden Flight Research Center, Edwards California, which successfully demonstrated an aircraft wing that could be pivoted obliquely from zero to 60 degrees during flight.

<span class="mw-page-title-main">Blackburn Firecrest</span> WWII British naval strike fighter

The Blackburn B.48 Firecrest, given the SBAC designation YA.1, was a single-engine naval strike fighter built by Blackburn Aircraft for service with the British Fleet Air Arm during the Second World War. It was a development of the troubled Firebrand, designed to Air Ministry Specification S.28/43, for an improved aircraft more suited to carrier operations. Three prototypes were ordered with the company designation of B-48 and the informal name of "Firecrest", but only two of them actually flew. The development of the aircraft was prolonged by significant design changes and slow deliveries of components, but the determination by the Ministry of Supply in 1946 that the airframe did not meet the requirements for a strike fighter doomed the aircraft. Construction of two of the prototypes was continued to gain flight-test data and the third was allocated to strength testing. The two flying aircraft were sold back to Blackburn in 1950 for disposal and the other aircraft survived until 1952.

<span class="mw-page-title-main">Walter C. Williams</span>

Walter Charles Williams was an American engineer, leader of the National Advisory Committee for Aeronautics (NACA) group at Edwards Air Force Base in the 1940s and 1950s, and a NASA deputy associate administrator during Project Mercury.

References

  1. 1 2 Francillon, René J. (1988). McDonnell Douglas aircraft since 1920 : Volume I. London: Naval Institute Press. pp. 412–416. ISBN   0870214284.
  2. "Skystreak Heads For The Speed Limit". Popular Science. 150 (3): 94–95. March 1947. Retrieved 17 May 2019.
  3. 1 2 Heinemann, Edward H.; Rosario Rausa (1980). Ed Heinemann: Combat Aircraft Designer. Annapolis, MD: Naval Institute Press. ISBN   0-87021-797-6.
  4. Käsemann, Ferdinand C.W. (1999). Die schnellsten Jets der Welt[The Fastest Jets In the World] (in German). Berlin: Aviatic-Verlag GmbH. pp. 17, 122. ISBN   3-925505-26-1.
  5. Stüwe, Botho (1999). Peenemünde West (in German). Augsburg: Bechtermünz Verlag. pp. 207, 211–213. ISBN   3-8289-0294-4.
  6. Bridgman, Leonard, ed. (1949). Jane's all the World's Aircraft 1949-50. London: Sampson Low, Marston & Co. pp. 214c–215c.
  7. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Further reading