| 词条 | Bisnovat SK-1 | ||||||||||||||||
| 释义 |
The SK-1, (Skorostnoye Krylo – high speed wing), was a research aircraft designed and built in the USSR from 1938. DevelopmentAfter working as an engineer under Tairov at the OKO in Kiev, Bisnovat was permitted to form his own OKB with the task of designing and building a high speed research aircraft, which emerged as the SK-1. This aircraft was designed to have the smallest airframe capable of flying powered by a large V-12 engine, with the smallest wings possible for safe landings on Soviet grass airfields. Construction of the SK-1 was of light-alloy stressed skin, with single plate web spar wings skinned with light-alloy sheet, smoothed to mirror finish accurate profiles using marquisette fabric, cork dust, open weave and adhesive as filler. Initially the wing was of NACA 23014.5 profile with slotted Vlasov style flaps, and fabric covered ailerons. The tail-unit also had fabric covered control surfaces, and trim tabs, with all controls 100% mass balanced. The M-105 engine was fitted in a low drag installation with a pressurised coolant system which required a radiator of only 0.17m^2 frontal area, (approx ½ that of a similar unpressurised coolant system). In the flush cockpit, the pilot sat on a hydraulically actuated seat which raised the hinged roof of the canopy to form a wind-shield for landing, allowing the fuselage to have a total frontal area of only 0.85 m^2. Hydraulically retractable main and tail undercarriages with fully closing doors reduced drag even further. Test flights began in January 1939 with the aircraft on skis, with surprisingly good handling and manoeuvrability as well as excellent performance. Specifications (SK-1){{aerospecs|ref=Gunston, Bill. "Encyclopaedia of Russian Aircraft 1875–1995". London:Osprey. 1995. {{ISBN|1-85532-405-9}} |met or eng?=met |crew=1 |capacity= |length m=8.0 |length ft=26 |length in=3 |span m= 7.2 |span ft=23 |span in=7½ |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= |height ft= |height in= |wing area sqm=9.5 |wing area sqft=102 |swept area sqm= |swept area sqft= |rot area sqm= |rot area sqft= |volume m3= |volume ft3= |aspect ratio= |wing profile= max speed |empty weight kg=1,505 |empty weight lb=3,318 |gross weight kg=2,100 |gross weight lb=4,630 |lift kg= |lift lb= |eng1 number=1 |eng1 type= Klimov M-105 (VK-105) |eng1 kw=783 |eng1 hp=1,050 |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=710 |max speed mph=421 |max speed mach= |cruise speed kmh= |cruise speed mph= |stall speed kmh= |stall speed mph= |range km=1,000 |range miles=621.37 |endurance h= |endurance min= |ceiling m= |ceiling ft= |g limits= |roll rate= |glide ratio= |climb rate ms= |climb rate ftmin= |sink rate ms= |sink rate ftmin= |armament1= |armament2= |armament3= |armament4= |armament5= |armament6= }} See also{{aircontent|see also= |related= |similar aircraft=
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External links
2 : Soviet experimental aircraft 1930–1939|Bisnovat aircraft |
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