X-3 (plane)
X-3
X-3 which is flying
- A classification: Experiment machine
- A manufacturer: Douglas
- An operation person: American air force, NACA
- Maiden flight: September 20, 1952
- The number of the production: Two planes
- An operational start: 1952
- Military retirement: 1956
- The operational situation: Military retirement
The super sonic speed experiment machine that X-3 was developed in the United States of America. The nickname Stiletto (a stiletto: the will of the dagger). Douglas developed it, and one plane was made.
Table of contents
History
Douglas performed the study and development of the supersonic plane during World War II, too. On June 20, 1945, development was approved for future fighter jet development as testing equipment XS-3 of the hypersonic flight, and the U.S. Army Airlines forces placed an order for development on June 30, 1949. The performance required at first was a thing called 30 minutes for maximum speed Mach number 2, duration.
The first unit was completed in 1951 and made the first flight by a pilot of Douglas, a hand of William E Bridgman in Edwards Air Force Base on September 20, 1952. However, I was powerless, and a developed jet engine was not able to achieve the horizontal Mach number 2 flight that was an original aim for technical standards at the time. The biggest level flight speed recorded Mach One .25 by a dive in Mach number 0.987 on July 18, 1953. As a result, the air force canceled an X-3 plan, and the production of the second unit placed an order for was canceled.
X-3 was transferred from the air force to American national Natl. Advisory Committee for Aeronautics (NACA) (のちの NASA) in August, 1953. A test is carried out until May 23, 1956 and is used for the elucidation of the roll coupling phenomenon. The times of flight in total is 54 times. I was transferred afterwards by a national American air force museum.
Body shape
In the slim body of the street of the nickname, I have the extremely thin small main wing. Unlike developed X-1 and X-2, I perform the taking off and landing from the runway for the purpose of being similar. The engine is equipped with XJ34-WE-17 () turbojet engine made in Westinghouse Electric Corp two in the body. Like later F-4, I have a vertical tail and tailplane backward than an engine vent. The tailplane is all idling tail assemblies abreast of a current fighter. I keep a downward ejector seat in the cockpit, and the pilot boards at the lower body by an elevator.
In addition, the engine was equipped with the XJ46 turbojet engine of 2,722 kg of thrusts at first and aimed at Mach number 2, but it was judged with impossibility what the diameter of the XJ46 engine set two on the body of X-3 of the on the small side because I had grown big, and it was a twin-engine plane of XJ34. The close output came to in this way decrease by 20% than a plan. Furthermore, as a result of having changed the materials of many parts of the body from the titanium to the stainless steel, the weight rose nearly 200 kg. It ended in failure though there was the cooperation of NACA and I added a water jet and an ammonia jet to XJ34 and was going to plan the reinforcement of the thrust.
Data
- Full length: 20.35m
- Overall width: 6.91m
- Overall height: 3.82m
- Self-respect: 6,510 kg (gross weight: 9,440 kg)
- A wing area: 15.5 m2
- An engine: XJ34-WE-17 (2,220 kg of afterburner time thrusts) made in Westinghouse Electric Corp *2
- The biggest arrival speed: 1,136km/h (an altitude of 6,100m)
- The initial rate of climb: 5,790m/m
- An absolute ceiling: 11,580m
- Duration: One hour
- A crew: One person
Other
The flight of Mach number 2 by the level flight that is an original aim was not accomplished, but it is said that the data had a great influence on the design of the later F-104 star fighter.
In addition, I am collected in "world 駄 っ product machine" (written by Dasaku Okabe: 駄 っ product machine name of Isaku Okabe).
References
- Masterpiece machine series Special Edition3 literary coterie temple ISBN 9784893191175 2005 of "all experiment machine planes of X introduction world that stepped into - unknown domain in the times"
- "Masterpiece machine No. 67 literary coterie temple ISBN 9784893190642 1997 of the X-Plains world"
- "Aviation fan (magazine) separate volume No. 32 United States warplane 1945-1986 air force" literary coterie temple magazine cord 03344-8 1986
Outside link
This article is taken from the Japanese Wikipedia X-3 (plane)
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