Cessna 441 Conquest II
|Cessna 441 Conquest II|
|National origin||United States|
|First flight||10 January 1977|
|Introduction||1977 Paris Air Show|
|Primary users||corporate owners|
charter flight operators
The Cessna 441 Conquest II is the first turboprop powered aircraft designed by Cessna and was meant to fill the gap between their jets and piston-engined aircraft. It was developed in November 1974, with the first aircraft delivered in September 1977. It is a pressurized, 8–9 passenger turbine development of the Cessna 404 Titan.
Design and development
The original design from 1972 for this aircraft was known as the Model 435 and was to be powered by Continental GTSIO-520X engines with three bladed propellers. By 1975 the designed evolved into the turboprop powered Model 441. The aircraft has retractable tricycle landing gear and on takeoff has a ground roll of 1,785 ft (544 m). The high aspect ratio wings use bonded construction techniques. Cessna renamed the model 441 the Conquest II in 1983.
The Conquest is powered by two Garrett TPE331 turboprops powering two Hartzell three bladed propellers. 1984 models starting with constructor number 195 used lighter weight four-bladed McCauley propellers. A 441 with Pratt & Whitney Canada PT6A-112 turboprops was flown in 1986 but did not enter production.
The Cessna 441 is limited to 22,500 hours of air time by a Cessna Supplementary Inspection Document (SID). This life-limit SID is mandatory in the USA for air carriers operating the aircraft but is advisory only for private operators.
The majority of Cessna 441s have been modified by installing Garrett TPE331-10 engines in place of the earlier versions of this same engine that it was delivered with. This modification reduces maintenance costs while increasing horsepower, service ceiling, fuel efficiency and range. Cessna 441s with this conversion tend to have higher resale values than aircraft that have not been converted.
Converting from the standard three blade propellers to smaller diameter Hartzell four blade propellers results in a climb rate improved by 200 fpm (1.01 m/s) and a 5 kn (9 km/h) increase in cruise speed as well as reducing cabin noise and improving ground clearance.
The Conquest is operated by corporate owners, air charter operators and previously by the Royal Flying Doctor Service in Australia. Examples of the type have been exported to many countries including Austria, Australia, Canada, Ecuador, Finland, Germany, Iceland, Mexico, Norway, Peru, South Africa, Sweden and the United Kingdom. Many remain in service.
Specifications (Conquest II)
Data from Jane's All The World's Aircraft 1982–83
- Crew: 1 or 2 pilots
- Capacity: 8-10 passengers
- Length: 39 ft 0 in (11.89 m)
- Wingspan: 49 ft 4 in (15.04 m)
- Height: 13 ft 2 in (4.01 m)
- Wing area: 253.6 sq ft (23.56 m2)
- Aspect ratio: 9.6:1
- Airfoil: NACA 23018 at root, NACA 23019 at tip
- Empty weight: 5,682 lb (2,577 kg)
- Gross weight: 9,850 lb (4,468 kg)
- Powerplant: 2 × Garrett TPE331-8-403S turboprops, 636 shp (474 kW) each
- Propellers: 4-bladed McCauley
- Maximum speed: 340 mph (547 km/h; 295 kn) at 16,000 ft (4,875 m)
- Cruise speed: 298 mph (480 km/h; 259 kn) at 35,000 ft (10,700 m)
- Stall speed: 86 mph; 75 kn (139 km/h) flaps and gear down
- Range: 2,525 mi (2,194 nmi; 4,064 km) at 35,000 ft (10,700 m)
- Service ceiling: 35,000 ft (11,000 m)
- Rate of climb: 2,435 ft/min (12.37 m/s)
- Cessna 1000A Integrated Flight Control System
Aircraft of comparable role, configuration and era
- Phillips, Edward H.: Wings of Cessna, Model 120 to the Citation III, Flying Books, 1986. ISBN 0-911139-05-2
- Simpson, 2005, p. 97
- Alan Healy (October 1977). "The New Cessna Conquest". Air Progress.
- AVweb.com - FAA Clarifies Cessna's Life Limit For The 441 Conquest II accessed 24 February 2016
- Honeywell International (2009). "TPE 331 Engine Conversions". Archived from the original on 2013-01-03. Retrieved 2009-03-21.
- Hubber, Mark (October 2008). "Business Jet Traveler - Cessna 441 Conquest II". Retrieved 2016-02-24.
- Taylor 1982, pp. 353–354.
- Simpson, Rod (2005). The General Aviation Handbook. Hinckley, England: Midland Publishing. ISBN 978-1-85780-222-1.
- Taylor, John W. R. (1982). Jane's All The World's Aircraft 1982–83. London: Jane's Yearbooks. ISBN 0-7106-0748-2.
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