| 词条 | Piaggio P.2 | |||||||||||||||
| 释义 |
The Piaggio P.2 was an Italian fighter prototype of advanced design built by Piaggio in 1923. Design and developmentIn 1923, the Pegna-Bonmartini workshops at Sestri Ponente in Genoa, Italy, were constructing a fighter aircraft prototype designed by Ing Giovanni Pegna around the smallest airframe that could accommodate the 224-kilowatt (300-horsepower) Hispano-Suiza HS 42 eight-cylinder water-cooled engine. After the Piaggio company purchased Pegna-Bonmartini that year, construction of the prototype continued and resulted later in 1923 in the completion of the Piaggio P.2.[1] The P.2 was an aerodynamically clean, single-seat, low-wing, cantilever monoplane of very advanced design for the time with either a monocoque[2] or semi-monocoque fuselage and fixed landing gear. It was built of wood, with plywood skin and fabric-covered control surfaces, and was armed with two machine guns—sources differ on whether the machine guns were of 7.62-millimeter (0.3-inch) or 12.7-millimeter (0.5-inch)[3] caliber—synchronized to fire through the propeller.[4] It had two radiators, one mounted on each side of the fuselage, forward of the open cockpit. Operational historyPiaggio built two P.2 prototypes and entered the P.2 in the 1923 Italian official fighter contest. The P.2 was probably ahead of its time, however the Italian Air Ministry distrusted monoplanes at the time and the P.2{{'}}s performance did not meet the level that Pegna had predicted, and for these reasons no production order followed. However, the Regia Aeronautica (Italian Royal Air Force) purchased one of the prototypes for evaluation, taking delivery of it on 23 March 1924.[5] Operators
Specifications{{aerospecs|ref= |met or eng?=met |crew=one |capacity= |length m=7.00 |length ft=22 |length in=11⅔ |span m=10.58 |span ft=34 |span in=8½ |width m= |width ft= |width in= |height m=2.20 |height ft=7 |height in=2⅔ |wing area sqm=20.08 |wing area sqft=216.15 |empty weight kg=867 |empty weight lb=1,911 |gross weight kg=1,182 |gross weight lb=2,606 |eng1 number=1 |eng1 type=Hispano-Suiza HS 42 eight-cylinder water-cooled piston |eng1 kw=224 |eng1 hp=300 |eng2 number= |eng2 type= |eng2 kw= |eng2 hp= |max speed kmh=233 |max speed mph=145 |cruise speed kmh= |cruise speed mph= |range km= |range miles= |endurance h=2 |endurance min=36 |ceiling m= |ceiling ft= |climb rate ms= |climb rate ftmin= |armament1=2 × machine guns[6] |armament2= |armament3= |armament4= |armament5= |armament6= }}Notes:
Notes1. ^Green and Swanborough, p. 471. 2. ^According to Green and Swanborough, p.471. 3. ^Green and Swanborough, p. 471 4. ^Green and Swanborough, p. 471. 5. ^Green and Swanborough, p. 471. 6. ^7.62-millimeter (0.3-inch) caliber or 12.7-millimeter (0.5-inch) caliber. References{{commons category|Piaggio P.2}}
3 : Italian fighter aircraft 1920–1929|Piaggio aircraft|Aircraft first flown in 1923 |
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