| 词条 | Thomas-Morse MB-9 | |||||||||||||||||||
| 释义 |
The Thomas Morse MB-9 was an experimental American fighter aircraft of the 1920s. It was a single-engined, single-seat parasol winged monoplane, but was unsuccessful, being quickly abandoned. Design and developmentIn 1921, B. Douglas Thomas, chief designer of Thomas-Morse Aircraft designed two closely related parasol monoplanes, a single-seat fighter, the MB-9 and a two-seat trainer, the MB-10. They were of all-metal construction, with corrugated duralumin skinning.[1] First to be completed was the MB-10, which had tandem cockpits and was designed to be powered by a {{convert|200|hp|kW|lk=on|abbr=on}} Wright or Lawrance radial engine. In the absence of the intended engine, it was fitted with a {{convert|110|hp|kW|abbr=on}} Le Rhône 9Ja rotary engine to allow flight testing to start in late 1921. The MB-10's handling proved to be extremely poor,[1] while it also suffered severe vibration and was structurally weak.[2] The MB-9 fighter was completed early in 1922,[4] differing principally from the MB-10 in the removal of the forward cockpit and the use of a {{convert|320|hp|kW|abbr=on}} Wright Hispano H-3 V8 engine, cooled by a radiator situated (along with the oil tank) in a torpedo-shaped structure under the fuselage.[1] Planned armament was two machine guns; one {{convert|.50|in|mm|1|abbr=on}} and one {{convert|.30|in|mm|2|abbr=on}}.[4] While the MB.9 handled better than the MB.10,[1] it still suffered from the severe vibration and structural problems that plagued the trainer,[2] together with a weak undercarriage and cooling problems.[1] The development of both aircraft was quickly stopped, with the types not being sent for formal evaluation by the United States Army Air Service at McCook Field.[2] Variants
Single-seat fighter powered by 300 hp (239 kW) Wright Hispano H-3 engine. One built.
Two seat primary trainer aircraft, powered by 110 hp (82 kW) Le Rhône rotary engine. One built. Specifications (MB-9){{Aircraft specs|ref=The Complete Book of Fighters[3] |prime units?=imp |crew=1 |capacity= |length m= |length ft=19 |length in=0 |span m= |span ft=29 |span in=0 |height m= |height ft= |height in= |wing area sqm= |wing area sqft= |aspect ratio= |airfoil= |empty weight kg= |empty weight lb= |gross weight kg= |gross weight lb= |max takeoff weight kg= |max takeoff weight lb= |fuel capacity= |eng1 number=1 |eng1 name=Wright Hispano H-3 |eng1 type=water-cooled V8 engine |eng1 kw= |eng1 hp=320 |power original= |max speed kmh= |max speed mph=170 |max speed kts= |range km= |range miles= |range nmi= |endurance= |ceiling m= |ceiling ft= |climb rate ms= |climb rate ftmin= |time to altitude= |guns=1 × {{convert|.30|in|mm|2|abbr=on}} and 1 × {{convert|.50|in|mm|1|abbr=on}} machine gun (planned) |avionics= }} See also{{Portal|Aviation}}{{aircontent|see also= |related=Thomas-Morse TM-22 |similar aircraft= |lists= }} References{{commons category|Thomas-Morse aircraft}}
1. ^1 2 3 4 Wegg 1990, p. 27. 2. ^1 2 Angelucci and Bowers 1987, p. 423. 3. ^1 2 Green and Swanborough 1994, p. 569.
2 : United States fighter aircraft 1920–1929|Thomas-Morse aircraft |
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