| 词条 | Junkers A50 | ||||||||||||||||
| 释义 |
The Junkers A50 was a German sports plane of the 1930s, also called the A50 Junior. DevelopmentThe Junkers A50 was the first sportsplane designed by Hermann Pohlmann in Junkers works.[2] It had the same modern all-metal construction, covered with corrugated duralumin sheet, as larger Junkers passenger planes.[2] The first flight of the A50 took place on 13 February 1929. It was followed by further four prototypes, in order to test different engines. Junkers expected to produce 5,000 aircraft, but stopped after manufacturing only 69, of which only 50 were sold. The high prices probably inhibited sales. Apart from Germany, they were used in several other countries and some were used by airlines. The purchase price in 1930 in the United Kingdom was between £840 or £885.[3] Starting from the A50ce variant, the wings could be folded for easier transport. Three German A50 took part in the Challenge international touring plane competition in July 1929, taking 11th place (A50be, pilot Waldemar Roeder) and 17th place. Three A50 took part also in the Challenge 1930 next year, taking 15th (A50ce, pilot Johann Risztics), 27th and 29th places.[2] In June 1930 a series of eight FAI world records for altitude, range and average speed were set on a floatplane variant of A50 with the Armstrong Siddeley 59 kW (79 hp) engine. In 1931 Marga von Etzdorf flew an A50 solo from Berlin to Tokyo, the first woman to do so.. Variants
The -ce and -ci variants were produced in the largest numbers with about 25 of each on the German civil register.[5] Due to their construction, the A50 were durable aircraft and they lasted long in service. The last plane was used in the 1960s in Finland.[2] There is one A50 preserved in Deutsches Museum in Munich and another in Helsinki airport. One A50 (VH-UCC, c/n3517) is in airworthy condition in Australia. {{clear}}DescriptionMetal construction sports plane, conventional in layout, with low cantilever wings, stressed corrugated duralumin covered.[2] Two-spar wings were folding rearwards or could be detached.[2] Crew of two, sitting in tandem in separate open cockpits (if it flew without a passenger, one cockpit could be closed with a cover). Two-blade propeller. Conventional fixed split axle mainwheel landing gear, with a rear skid. Fuel tank 95 l. Operators{{Unreferenced section|date=August 2015}}
Surviving aircraft{{expand section|date=August 2015}}An example is currently on display in Helsinki Airport. Registered as OH-ABB, it was flown by Väinö Bremer to Cape Town in a historic flight. Specifications (A50){{aircraft specifications|plane or copter?=plane |jet or prop?=prop |ref=[6] |crew=two |capacity= |payload main= |payload alt= |length main= 7.12 m |length alt= 23 ft 4 in |span main= 10.02 m |span alt= 32 ft 10.5 in |height main= 2.40 m |height alt= 7 ft 10.5 in |area main= 13.7 m² |area alt= 147 ft² |airfoil= |empty weight main= 360 kg |empty weight alt= 794 lb |loaded weight main= 600 kg |loaded weight alt= 1,323 lb |useful load main= |useful load alt= |max takeoff weight main= |max takeoff weight alt= |more general= |engine (prop)= Armstrong Siddeley Genet II |type of prop= radial engine |number of props=1 |power main= 64.7 kW |power alt= 88 hp |power original= |max speed main=172 km/h |max speed alt= 107 mph |cruise speed main= 145 km/h |cruise speed alt=90 mph |stall speed main= |stall speed alt= |never exceed speed main= |never exceed speed alt= |range main=600 km |range alt=373 mi |ceiling main= 4,600 m |ceiling alt= 15,100 ft |climb rate main={{cvt|2.4|m/s|ft/s}}[7] |climb rate alt= |loading main= |loading alt= |thrust/weight= |power/mass main= |power/mass alt= |more performance=
|armament= |avionics= }} See also{{aircontent||related= |similar aircraft=
|sequence= |lists= |see also= }} References1. ^Kay, Anthony L. Junkers Aircraft and engines 1913-1945 (2004) p.95-7. London: Putnam Aeronautical Books {{ISBN|0-85177-985-9}} {{refbegin}}{{refend}}2. ^1 2 3 4 5 {{pl icon}} Krzyżan, Marian. Międzynarodowe turnieje lotnicze 1929-1934 [International aviation competitions 1929-1934], Warsaw 1988, {{ISBN|83-206-0637-3}} 3. ^Junkers Junior, Flight, April 4, 1930. 4. ^Junkers-F13-and-A50 5. ^{{cite web |url=http://www.goldenyears.ukf.net/ |title=Archived copy |accessdate=2012-05-30 |deadurl=yes |archiveurl=https://web.archive.org/web/20120219070818/http://www.goldenyears.ukf.net/ |archivedate=2012-02-19 |df= }} 6. ^Turner, P. St.J. and Nowarra, H Junkers: an aircraft album (1971) p.54-7. New York: Arco Publishing Inc. {{ISBN|0-668-02506-9}} 7. ^P. D. Stemp, "Kites, Birds & Stuff - Aircraft of GERMANY - I to M", p. 703 8. ^1 Best take-off and landing results from Challenge 1930 competition (Krzyżan, op.cit., Table II) External links{{commons category|Junkers A 50}}
5 : German sport aircraft 1920–1929|Junkers aircraft|Low-wing aircraft|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。