| 词条 | Albatros L 77v | |||||||||||||||
| 释义 |
The Albatros L 77v was a German tandem two-seat reconnaissance fighter biplane, four examples of which were built under license for Albatros Flugzeugwerke by Ernst Heinkel Flugzeugwerke in 1928. Based upon the L 76 Aeolus reconnaissance trainer, the aircraft was powered by a 450 kW (600 hp) BMW VI 5.5 water-cooled V12 engine. Like the L 76, the L 77v had a fabric-covered welded-steel fuselage and wooden dual-spar wings with plywood skins supported by N-type struts. It was armed with twin 7.92 mm (.312 in) machine guns in fixed forward-firing positions and a third on a ring mounting in the rear cockpit. Three of the aircraft saw service performing armament trials in Lipetsk in the Soviet Union; these included one aircraft testing a free-mounted 20 mm cannon. The fourth aircraft had been destroyed while undergoing tests in March 1929. Between December 1929 and their retirement in October 1931, the surviving L 77vs were based at the Staaken Erprobungsstelle (Test Centre). Specifications (L 77v){{aerospecs|met or eng?=met |crew=two, pilot and observer |capacity= |length m=8.45 |length ft=27 |length in=9 |span m=12.76 |span ft=41 |span in=10 |dia m= |dia ft= |dia in= |height m=3.9 |height ft=12 |height in=10 |wing area sqm=27.8 |wing area sqft=299 |rot area sqm= |rot area sqft= |aspect ratio= |empty weight kg= |empty weight lb= |gross weight kg= |gross weight lb= |eng1 number=1 |eng1 type=BMW VI |eng1 kw=450 |eng1 hp=600 |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=220 |max speed mph=140 |range km= |range miles= |endurance h= |endurance min= |ceiling m= |ceiling ft= |glide ratio= |climb rate ms= |climb rate ftmin= |sink rate ms= |sink rate ftmin= |armament1=2 × fixed, forward-firing 7.92 mm (.312 in) machine guns |armament2=1 × flexible 7.92 (.312 in) mm machine gun for observer |armament3=2 × 50 kg (110 lb) bombs |armament4= |armament5= |armament6= }} See also{{aircontent|related= |similar aircraft= |lists= |see also= }} References{{commons category|Albatros Flugzeugwerke}}
6 : Single-engined tractor aircraft|Sesquiplanes|German military reconnaissance aircraft 1920–1929|Albatros aircraft|Heinkel aircraft|Aircraft first flown in 1928 |
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