| 词条 | Deekay Knight | |||||||||||||||
| 释义 |
The Deekay Knight was a British two-seat cabin monoplane designed by S.C.Hart-Still and built in 1937 by the Deekay Aircraft Corporation at Broxbourne in Hertfordshire, England.[1] It was built to test methods of wing construction that would later be suitable for plastic skinning. DevelopmentThe Knight was a conventional looking low-wing monoplane, with a fixed tailwheel landing gear, the main legs housed in trouser fairings and powered by a nose-mounted 90 hp (67 kW) Blackburn Cirrus Minor piston engine.[1] It had an enclosed cabin with side-by-side seating for two.[3] It had an unusual wing construction which used four spars and interspars instead of ribs.[2] Though the wing was made of wood throughout, with a stressed plywood skin, the purpose of its novel construction was to explore methods suitable for later use with plastic materials.[2][3] The wing was tested at the Royal Aircraft Establishment Farnborough and the root fittings but not the wing failed at 12.3 times the weight of the aircraft, well beyond the target load factor of 9.[1] Only one aircraft, registered G-AFBA,[4] was built which was scrapped sometime during the Second World War.[1][5] Specifications{{aerospecs|ref=[1] |met or eng?=eng |crew=2 |capacity= |length m=6.96[5] |length ft=22 |length in=10 |span m=9.60 |span ft=31 |span in=6 |swept m= |swept ft= |swept in= |rot number= |rot dia m= |rot dia ft= |rot dia in= |dia m= |dia ft= |dia in= |width m= |width ft= |width in= |height m=1.85 |height ft=6 |height in=1 |wing area sqm=13.01 |wing area sqft=140.0 |swept area sqm= |swept area sqft= |rot area sqm= |rot area sqft= |volume m3= |volume ft3= |aspect ratio= |empty weight kg=386 |empty weight lb=850 |gross weight kg=658 |gross weight lb=1450 |lift kg= |lift lb= |eng1 number=1 |eng1 type=Blackburn Cirrus Minor inverted inline piston engine |eng1 kw=67 |eng1 hp=90 |eng1 kn= |eng1 lbf= |eng1 kn-ab= |eng1 lbf-ab= |eng2 number= |eng2 type= |eng2 kw= |eng2 hp= |eng2 kn= |eng2 lbf= |eng2 kn-ab= |eng2 lbf-ab= |max speed kmh=201 |max speed mph=125 |max speed mach= |cruise speed kmh=169 |cruise speed mph=105 |range km= |range miles= |endurance h= |endurance min= |ceiling m=5.335 |ceiling ft=[13] 17,500 |glide ratio= |climb rate ms=4.1 |climb rate ftmin=[6] 800 |sink rate ms= |sink rate ftmin= |armament1= |armament2= |armament3= |armament4= |armament5= |armament6= }}{{aircontent |see also= |related= |similar aircraft= |sequence= |lists= }} ReferencesNotes1. ^1 2 3 4 {{Harvnb |Orbis|1985| p=1420}} 2. ^1 {{cite magazine | title=Towards Thermoplastics: An Interesting Form of Wing Construction |magazine=Flight | page=100 | url=http://www.flightglobal.com/pdfarchive/view/1937/1937%20-%202056.html| date= 22 July 1937|volume=XXXII |issue=1491}} 3. ^{{Harvnb|Grey|1972|pages=35c-36c}} 4. ^{{cite web|title=Registration G-AFBA |url=http://www.caa.co.uk/docs/HistoricalMaterial/G-AFBA.pdf |work= |publisher=United Kingdom Civil Aviation Authority |date= |accessdate=2009-08-05 |deadurl=yes |archiveurl=https://web.archive.org/web/20110606161116/http://www.caa.co.uk/docs/HistoricalMaterial/G-AFBA.pdf |archivedate=2011-06-06 |df= }} 5. ^1 2 {{Harvnb |Jackson|1973| p=300}} 6. ^1 {{Harvnb|Grey|1972|pages=36c}} marked "estimate" Bibliography{{refbegin}}
4 : British civil utility aircraft 1930–1939|Low-wing aircraft|Single-engined tractor aircraft|Aircraft first flown in 1937 |
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