| 词条 | Beechcraft Model 99 | |||||||||||||||||
| 释义 |
The Beechcraft Model 99 is a civilian aircraft produced by Beechcraft. It is also known as the Beech 99 Airliner and the Commuter 99. The 99 is a twin-engine, unpressurized, 15 to 17 passenger seat turboprop aircraft, derived from the earlier Beechcraft King Air and Queen Air. It uses the wings of the Queen Air, the engines and nacelles of the King Air, and sub-systems from both, with a specifically-designed nose structure. Design and developmentDesigned in the 1960s as a replacement for the Beechcraft Model 18, it first flew in July 1966. It received type certification on May 2, 1968, and 62 aircraft were delivered by the end of the year. In 1984, the Beechcraft 1900, a pressurized 19-passenger airplane, was introduced as the follow-on aircraft. Production ended in early 1987. Nearly half the Beech 99s in airline service are now operated as freighters by Ameriflight. Variants
Operators{{main article|List of Beechcraft Model 99 operators}}In July 2018, 105 Beechcraft B99 were in airline service, all in the Americas:[1]
Specifications (Model 99A){{aircraft specifications|plane or copter?= plane |jet or prop?= prop |ref=Green[2] |crew= One |capacity= Normally 15 passengers (8-seat 'Business Executive' model available) |payload= Up to 3600 lb depending upon fuel requirements lb; some aircraft have a belly pod for additional baggage or cargo |payload alt= optional |length main= 44 ft 6¾ in |length alt= 13.58 m |span main= 45 ft 10½ in |span alt= 13.98 m |height main= 14 ft 4⅓ in |height alt= 4.37 m |area main= 279.7 ft² |area alt= 25.99 m² |airfoil= |empty weight main= 5,533 lb (varies depending upon equipment and configuration) |empty weight alt= 2,515 kg |loaded weight main= |loaded weight alt= |useful load main= |useful load alt= |max takeoff weight main= 10,400, 10,900, or 11,300 lb – see above |max takeoff weight alt= 4,727 kg |more general= |engine (prop)=Pratt & Whitney PT6A-20, -27. or -36 |type of prop=turboprop Hartzell constant speed, feathering, and reversing |number of props=2 |power main= 550, 680, or 715 eshp depending upon model/mod status |power alt= |power original= |max speed main= |max speed alt= |cruise speed main= 205 knots |cruise speed alt= 380 km/h |cruise speed more=at 10,000 ft (3,050 m) |never exceed speed main= |never exceed speed alt= |stall speed main= |stall speed alt= |range main= 910 nm |range alt= 1,048 mi, 1,686 km |range more= at 216 mph (347 km/h) at 8,000 ft (2,440 m) |ceiling main= 26,200 ft |ceiling alt= 7,988 m |climb rate main= 1,700 ft/min |climb rate alt= 8.63 m/s |loading main= |loading alt= |power/mass main= |power/mass alt= |more performance= |avionics= }} See also{{aircontent||related=
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|see also= }} References1. ^{{Cite web|url=https://www.flightglobal.com/asset/24536|title=World Airline Census 2018|last=|first=|date=|website=Flightglobal.com|language=en-GB|archive-url=|archive-date=|dead-url=|access-date=2018-08-27}} 2. ^Green, William, The Observers Book of Aircraft, Frederick Warne & Co. Ltd, 1970. {{ISBN|0-7232-0087-4}} External links{{commons category|Beechcraft Model 99}}
5 : Beechcraft aircraft|United States airliners 1960–1969|Low-wing aircraft|Aircraft first flown in 1966|Twin-turboprop tractor aircraft |
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