| 词条 | Heinkel HD 55 | ||||||||||||||||
| 释义 |
The Heinkel HD 55 was a biplane flying boat produced in Germany in the early 1930s for use as a reconnaissance aircraft aboard Soviet warships. The design was based on the HD 15 mail plane of 1927 and was a conventional design for its time, with equal span, unstaggered wings, and an engine mounted tractor-wise on struts above the pilot's open cockpit. A second open cockpit was added on the rear fuselage to provide a position for a tail gunner. The HD 55 came about as a result of a meeting between Heinkel and Soviet officials in May 1929, leading to a contract for 15 such aircraft, and two pneumatic catapults similar to the type Heinkel had developed to launch the HE 12 mail plane from the {{SS|Bremen|1929|2}}, although this order was substantially increased as time went by. In Soviet service, the designation KR-1 was used (корабельный разведчик - Korabelniy Razvedchik - "Shipboard Reconnaissance"). The first catapult was installed on the battleship Parizhskaya Kommuna in October 1930, and trials commenced immediately, revealing problems with both the catapult and the aircraft. These difficulties were never fully resolved, and the KR-1 was plagued through its career by various structural defects. Nevertheless, the type was deployed into service, with catapults and aircraft installed at various times aboard the cruisers {{Ship|Soviet cruiser|Chervona Ukraina||2}}, {{Ship|Soviet cruiser|Komintern||2}}, {{Ship|Soviet cruiser|Krasny Kavkaz||2}}, and Profintern. The type lingered on in service well into obsolescence in the mid-1930s, mostly due to the failure of its intended replacement, the Beriev Be-2. The final operational use of the KR-1 was around 1938, and by 1941 all had been either scrapped or placed in indefinite storage. Operators
Specifications{{aerospecs|ref= |met or eng?=met |crew=Two, pilot and gunner |capacity= |length m=10.35 |length ft=34 |length in=0 |span m=14.00 |span ft=45 |span in=11 |width m= |width ft= |width in= |height m=4.28 |height ft=14 |height in=1 |wing area sqm=56.9 |wing area sqft=612 |empty weight kg=1,520 |empty weight lb=3,350 |gross weight kg=2,270 |gross weight lb=5,000 |eng1 number=1 |eng1 type=Siemens-Halske Sh 20 |eng1 kw=360 |eng1 hp=480 |eng2 number= |eng2 type= |eng2 kw= |eng2 hp= |max speed kmh=194 |max speed mph=120 |cruise speed kmh= |cruise speed mph= |range km=800 |range miles=500 |endurance h= |endurance min= |ceiling m=4,800 |ceiling ft=15,800 |climb rate ms= |climb rate ftmin= |armament1=1 × fixed, forward-firing 7.62 mm (.30 in) PV-1 machine gun |armament2=2 × trainable, rearward-firing 7.62 mm DA machine guns |armament3= |armament4= |armament5= |armament6= }}{{aircontent |see also= |related= |similar aircraft= |lists= }} References{{commons category|Heinkel HD 55}}
6 : German military reconnaissance aircraft 1920–1929|Flying boats|Heinkel aircraft|Biplanes|Single-engined tractor aircraft|Aircraft first flown in 1929 |
||||||||||||||||
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。