De Havilland Doncaster

infobox Aircraft
name = DH.29 Doncaster
type = long-range monoplane
manufacturer = De Havilland


caption =
designer =
first flight = 1921
introduced =
retired =
status =
primary user = Air Ministry
more users =
produced =
number built = 2
unit cost =
variants with their own articles =

The de Havilland DH.29 Doncaster was a British long-range monoplane of the 1920s built by De Havilland.

History

The DH.29 Doncaster was ordered by the British Air Ministry as an experimental long-range monoplane. The aircraft was a high-wing cantilever monoplane with unswept wing of wooden structure with a fabric covering. It had a box section wooden fuselage with a single fin. The crew of two were in an open cockpit ahead of the wing. Two aircraft were built between 1920 and 1921 at Stag Lane Aerodrome. Early testing of the first aircraft (Serial "J6849") resulted in a redesign of the engine installation. The second aircraft (Registered G-EAYO) was built as a 10-seat commercial aircraft. The airlines were not interested in an untried monoplane and further development was abandoned and effort was put into the de Havilland DH.34 with a biplane configuration. A proposed military reconnaissance version, the DH.30, was never built.

The two aircraft finished their life at RAF Martlesham Heath on tests and trials particularly on the thick-section cantilever wings. The Doncaster was the first British aircraft to use thick-section cantilever wings.

Operators

;UK
*Air Ministry

pecifications (military version)

aircraft specifications
plane or copter?=plane
jet or prop?=prop

ref=
crew=2
capacity=
length main= 43 ft 0 in
length alt= 13.11 m
span main= 54 ft 0 in
span alt= 16.46 m
height main= 16 ft 6 in
height alt= 5.03 m
area main= 440 ft²
area alt= 40.88 m²
airfoil=
empty weight main= 4,370 lb
empty weight alt= 1982 kg
loaded weight main=
loaded weight alt=
useful load main=
useful load alt=
max takeoff weight main= 7,500 lb
max takeoff weight alt= 3402 kg
more general=

engine (jet)=
type of jet=
number of jets=
thrust main= lbf
thrust alt= kN
thrust original=
afterburning thrust main= lbf
afterburning thrust alt= kN
engine (prop)= Napier Lion IB
type of prop= inline piston
number of props= 1
power main= 450 hp
power alt= 336 kW
power original=
max speed main= 116 mph
max speed alt= 187 km/h
max speed more= at 10,000 ft (3050 m)
cruise speed main= 100 mph
cruise speed alt= 161 km/h
never exceed speed main=
never exceed speed alt=
stall speed main=
stall speed alt=
range main=
range alt=
ceiling main=
ceiling alt=
climb rate main=
climb rate alt=
climb rate more=
loading main=
loading alt=
thrust/weight=
power/mass main=
power/mass alt=
more performance=
armament=
avionics=

References

*cite book |last= |first= |authorlink= |coauthors= |title= The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)|year= |publisher= Orbis Publishing|location= |issn=
*cite book |last= Jackson|first= A.J.|authorlink= |coauthors= |title= British Civil Aircraft since 1919 Volume 2|year= 1974|publisher= Putnam|location= London|isbn=0 370 10010 7

External links

* [http://www.britishaircraft.co.uk/aircraftpage.php?ID=434 British Aircraft Directory entry]