Mosquito Specifications

FB 40 (RAAF service Merlin 31 or 33)

Type: Fighter Bomber.

 

Dimensions

Wingspan                    54 ft 2 ins

Length                          40 ft 10ins (tail down)

                                                    41 ft 5 ins (tail up)

Height                          14ft 3 ins (tail down prop up)

Wheel track                 16 ft 4 ins

Wing Area                    454 sq ft 42.18 sq m.

 

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 (31)                1,300 hp at 3000 rpm +12 lbs boost

Take off power (33)                1,400 hp at 3000 rpm +14 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

                                                    1500 lbs Merlin 33


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                 63 gal

Drop Tanks                  2 x 50 gal  or

                                       2 x 100 gal

 

Maximum Fuel                       713 Imp gal

 

Performance

Max                              378 mph @ 12,000 ft

Max Cruise                 255 mph @SL

Econ Cruise                240 mph @10,000ft

Ceiling                         33,000 ft

Range                          Max 1,855 miles

 

Weights

Empty                          14,344 lb

Max                              22,258 lb.

 

Armament

4 x 20mm Cannon with 150 rpg.

4 x .303in MG with 750 rpg

8 x 25lb or 60 lb Rockets

2 x 250lb or 500 lb Bombs internally

2 x 250lb or 500lb Bombs on wing racks

 

Crew

Pilot and Observer (Navigator)

 

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

A total of 212 FB 40 were built

6 converted to PR40.

28 converted to PR41 (incl FB42 converted to PR41)

1 converted to FB42

22 converted to T43