Mosquito Specifications

PR 40 (RAAF service Merlin 31)

Type: Photo Reconnaissance.

 

Dimensions

Wingspan†††††† †††††††††††† 54 ft 2 ins

Length†††††††††††† †††††††††††† 40 ft 10ins (tail down)

†††††††††††† †††††††††††† †††††††††††† 41 ft 5 ins (tail up)

Height†††††††††††† †††††††††††† 12ft 3.5 ins (tail down)

Wheel track††† †††††††††††† 16 ft 4 ins

Wing Area†††††† †††††††††††† 454 sq ft

 

Engines

Two Packard Merlin 31 or 33

Single stage two speed supercharged V12 engines.

Coolant Ethylene Glycol/Water

Capacity †††††††† †††††††††††† †††††††††††† 1649 cu ins 27 litres.

Take off power†††††††††† †††††††††††† 1,300 hp at 3000 rpm +12 lbs boost

†††††††††††† †††††††††††† †††††††††††† †††††††††††† 1,240 hp at 11,500 ft 9 lbs

†††††††††††† †††††††††††† †††††††††††† †††††††††††† 1,120 hp at 18,500 ft 9 lbs

 

Gear change † †††††††††††† †††††††††††† 15,000ft

Max cruise †††† †††††††††††† †††††††††††† 2650 rpm +7 lbs

Max climb ††††† †††††††††††† †††††††††††† 2850 rpm +9 lbs

Engine weight †††††††††† †††††††††††† 1475lbs Merlin 31

 

Propellers

De Havilland (Hamilton Standard) three blade constant speed fully feathering.12 ft diameter

 

Fuel Capacity

100/130 Octane

†††††††††††† Fuselage †††††††† †††††††††††† †††††††††††† 2 x 25 gal

†††††††††††† Inner wing††††† †††††††††††† †††††††††††† 2 x 64 gal

†††††††††††† †††††††††††† †††††††††††† †††††††††††† †††††††††††† 2 x 78 gal

†††††††††††† Outer wing††††† †††††††††††† †††††††††††† 2 x 24 gal

†††††††††††† †††††††††††† †††††††††††† †††††††††††† †††††††††††† 2 x 34 gal

†††††††††††† Long Range††† †††††††††††† †††††††††††† 126 gal

†††††††††††† Drop Tanks†††† †††††††††††† †††††††††††† 2 x 50 gal or

†††††††††††† †††††††††††† †††††††††††† †††††††††††† †††††††††††† 2 x 100 gal

 

†††††††††††† Maximum Fuel††††††††† †††††††††††† 844 Imp gal

 

Performance

Max††††† †††††††††††† †††††††††††† †††††††††††† 378 mph @ 13,200 ft

†††††††††††† Max Cruise†††† †††††††††††† †††††††††††† 255 mph @SL

†††††††††††† Econ Cruise††† †††††††††††† †††††††††††† 210 mph IAS @ 26000ft

Range† †††††††††††† †††††††††††† †††††††††††† Max 2,900 miles at 25,000ft

 

Weights

†††††††††††† Empty† †††††††††††† †††††††††††† †††††††††††† 14,344 lb

†††††††††††† Max††††† †††††††††††† †††††††††††† †††††††††††† 22,258 lb

 

Armament

†††††††††††† None

 

Crew

Pilot and Observer (Navigator)

 

Equipment

†††††††††††† A52-2

†††††††††††† 2 x F24 Cameras (Vertical) 8 in

†††††††††††† 1 x F52 Cameras (Vertical) 20 in

 

†††††††††††† Others

†††††††††††† 1 x K17 Camera (Vertical) 6 in

†††††††††††† 2 x F24 or K17 Camera (Oblique)

Cameras

 

F24 Universal camera

†††††††††††† Lenses ††††††††††† 8 in f2.9

†††††††††††† †††††††††††† †††††††††††† 14 in f5.6 & f4.5

†††††††††††† Shutter††††††††††† Focal plane

†††††††††††† Magazine††††††† 125 or 250 exposure

Format††††††††††† 5 in x 5 in

 

†††††††††††† F52 Camera

†††††††††††† Lenses ††††††††††† 36 in f6.3

†††††††††††† Shutter††††††††††† Focal plane

†††††††††††† Magazine††††††† 250 or 500 exposure

†††††††††††† Format††††††††††† 8.25 in x 7 in

 

K17 Camera

†††††††††††† Lenses ††††††††††† 6,12 & 24 in

†††††††††††† Shutter††††††††††† Between the lens

†††††††††††† Magazine††††††† 250 exposure

Format††††††††††† 9 in x 9 in

 

 

Construction

Spars † †††††††††††† †††††††††††† †††††††††††† Canadian Spruce

Plywood††††††††† †††††††††††† †††††††††††† Beech and Birch

Panel core material † †††††††††††† Balsa

 

Limited amounts of walnut were also used in sections such as the wing attachment points.

 

Number built

6 converted from FB40.

 

Note: The PR40ís were the only Australian Built Mosquitoes to see active service in WWII.