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| {{Short description|Experimental Japanese long-range escort fighter}}<!-- This article is a part of ]. Please see ] for recommended layout. --> | {{Short description|Experimental Japanese long-range escort fighter}} | ||
| <!-- This article is a part of ]. Please see ] for recommended layout. --> | |||
| {{Infobox aircraft | {{Infobox aircraft | ||
| | name = Ki-73 | | name = Ki-73 | ||
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| | introduction = | | introduction = | ||
| | retired = | | retired = | ||
| | status = Cancelled/abandoned | | status = Cancelled / abandoned in 1945 | ||
| | primary_user = ] | | primary_user = ] | ||
| | more_users = | | more_users = | ||
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| | developed_into = | | developed_into = | ||
| }} | }} | ||
| The '''Mitsubishi Ki-73''', Allied ] "'''Steve'''" |
The '''Mitsubishi Ki-73''', Allied ] "'''Steve'''", was a single-engine super high-speed long-range ] designed by ] for use by the ] in ]. The plane only reached the partially ] development before being abandoned and cancelled. The design and the developed prototype was built as a response to a specification for a single-engined long range escort fighter in May 1943. The Ki-73 was designed by Tomio Kubo, who was also responsible for the ] and the ] twin engine fighters. The need for the Ki-73 came from heavy losses to Japanese ]s in the ] from ] ]s. The war ] on 2 September 1945, before any farther development was completed on the Ki-73.<ref name="militaryfactory">{{Cite web|url=https://www.militaryfactory.com/aircraft/detail.php?aircraft_id=1463#google_vignette|title=Mitsubishi Ki-73 (Steve) Long Range Escort Fighter Proposal|website=www.militaryfactory.com}}</ref><ref name="auto">{{Cite web|url=https://www.j-aircraft.org/xplanes/hikoki_files/ki73.html|title=Mitsubishi Ki-73|website=www.j-aircraft.org}}</ref> | ||
| ==Design== | ==Design== | ||
| The Mitsubishi Ki-73 was a standard ] design with a ] configuration. The Ki-73 was designed with ], using two three bladed propellers. |
The Mitsubishi Ki-73 was a standard ] design with a ] configuration. The Ki-73 was designed with ], using two three bladed propellers. The two propellers were driven by a Mitsubishi Ha-203-II engine. The super speed Mitsubishi Ha-203-II engine had 2,600 hp derived from a ] with ]s in a ]. The high power engine would have given the plane a top speed of 750 km/h (466 MPH). The plane would have four {{convert|20| mm|abbr=on}} ]s, two per wing. The Mitsubishi Ha-203-II engine had many problems in development. This complex type engine with two 12 inline cylinders in a horizontal H configuration was successfully built by ] in the ] engine and used in the British ] and ] during the war. Due to the Mitsubishi Ha-203-II engine development problems, Tomio Kubo departed the Ki-73 project and worked on the twin engine Ki-83, which reached the complete prototype stage, but was not produced. The Mitsubishi Ki-73 was given the Allied code name ''Steve''. The ] gave the plane a code name as captured documents made its development seen to be near completion.<ref name="militaryfactory"/><ref name="auto"/> | ||
| ==See also== | ==See also== | ||
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| ===Bibliography=== | ===Bibliography=== | ||
| {{Refbegin}} | {{Refbegin}} | ||
| * {{cite book |last=Francillon |first=René J. |title=Japanese Aircraft of the Pacific War |year=1970 |location=London |publisher=Putnam and Company Ltd |isbn=0-370-00033-1}} |
* {{cite book |last=Francillon |first=René J. |title=Japanese Aircraft of the Pacific War |year=1970 |location=London |publisher=Putnam and Company Ltd |isbn=0-370-00033-1}} | ||
| * Francillon, René J. ''Japanese Aircraft of the Pacific War''. Annapolis, MD: Naval Institute Press, 1995 (reprint). | * Francillon, René J. ''Japanese Aircraft of the Pacific War''. Annapolis, MD: Naval Institute Press, 1995 (reprint). | ||
| * Green, William. ''Warplanes of the Second World War, Volume Three: Fighters''. London: Macdonald & Co. (Publishers) Ltd., 1961 (seventh impression 1973). {{ISBN|0-356-01447-9}} |
* Green, William. ''Warplanes of the Second World War, Volume Three: Fighters''. London: Macdonald & Co. (Publishers) Ltd., 1961 (seventh impression 1973). {{ISBN|0-356-01447-9}} | ||
| {{refend}} | |||
| {{Mitsubishi aircraft}} | {{Mitsubishi aircraft}} | ||
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| ] | ] | ||
| ] | |||
| ] | ] | ||
Latest revision as of 05:13, 6 January 2025
Experimental Japanese long-range escort fighter| Ki-73 | |
|---|---|
| General information | |
| National origin | Japan |
| Manufacturer | Mitsubishi Aircraft Company |
| Designer | Tomio Kubo |
| Status | Cancelled / abandoned in 1945 |
| Primary user | Imperial Japanese Army Air Service |
| Number built | Partially prototype developed |
The Mitsubishi Ki-73, Allied reporting name "Steve", was a single-engine super high-speed long-range escort fighter designed by Mitsubishi Aircraft Company for use by the Imperial Japanese Army Air Service in World War II. The plane only reached the partially prototype development before being abandoned and cancelled. The design and the developed prototype was built as a response to a specification for a single-engined long range escort fighter in May 1943. The Ki-73 was designed by Tomio Kubo, who was also responsible for the Mitsubishi Ki-46 and the Mitsubishi Ki-83 twin engine fighters. The need for the Ki-73 came from heavy losses to Japanese bombers in the Pacific War from Allied fighter planes. The war ended on 2 September 1945, before any farther development was completed on the Ki-73.
Design
The Mitsubishi Ki-73 was a standard monoplane design with a tail dragger configuration. The Ki-73 was designed with contra-rotating propellers, using two three bladed propellers. The two propellers were driven by a Mitsubishi Ha-203-II engine. The super speed Mitsubishi Ha-203-II engine had 2,600 hp derived from a liquid-cooled engine with 24 cylinders in a horizontal H. The high power engine would have given the plane a top speed of 750 km/h (466 MPH). The plane would have four 20 mm (0.79 in) Ho-5 cannons, two per wing. The Mitsubishi Ha-203-II engine had many problems in development. This complex type engine with two 12 inline cylinders in a horizontal H configuration was successfully built by D. Napier & Son in the Napier Sabre engine and used in the British Hawker Typhoon and Hawker Tempest during the war. Due to the Mitsubishi Ha-203-II engine development problems, Tomio Kubo departed the Ki-73 project and worked on the twin engine Ki-83, which reached the complete prototype stage, but was not produced. The Mitsubishi Ki-73 was given the Allied code name Steve. The United States Army gave the plane a code name as captured documents made its development seen to be near completion.
See also
Related development
Aircraft of comparable role, configuration, and era
- Lockheed P-38 Lightning
- North American P-51 Mustang
- Republic P-47 Thunderbolt
- Messerschmitt Bf 110
- Messerschmitt Bf 109
Related lists
References
References
- ^ "Mitsubishi Ki-73 (Steve) Long Range Escort Fighter Proposal". www.militaryfactory.com.
- ^ "Mitsubishi Ki-73". www.j-aircraft.org.
Bibliography
- Francillon, René J. (1970). Japanese Aircraft of the Pacific War. London: Putnam and Company Ltd. ISBN 0-370-00033-1.
- Francillon, René J. Japanese Aircraft of the Pacific War. Annapolis, MD: Naval Institute Press, 1995 (reprint).
- Green, William. Warplanes of the Second World War, Volume Three: Fighters. London: Macdonald & Co. (Publishers) Ltd., 1961 (seventh impression 1973). ISBN 0-356-01447-9
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| Imperial Japanese Army Air Service aircraft designations | |
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| 1-50 | |
| 51-100 | |
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| Imperial Japanese Army aircraft names | |
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| Fighters | |
| Bombers | |
| Transports | |
| Reconnaissance | |
| Trainers | |
| Special Attackers | |
| World War II Allied reporting names for Japanese aircraft | |
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| Aircraft in Japanese service |
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| Foreign aircraft thought to be in Japanese service | |