Mosquito Specifications

B XVI (RAF service Merlin 72/73 or 76/77)

Type: Unarmed pressurised high altitude bomber.

 

Dimensions

Wingspan                    54 ft 2 ins

Length                          40 ft 4.5ins (tail down)

                                       41 ft (tail up)

Height                          12ft 3.5 ins (tail down)

Wheel track                 16 ft 4 ins

Wing Area                    454 sq ft 42.18 sq m.

 

Engines

Two Rolls Royce Merlin 72/73 or 76/77.

Two stage two speed supercharged intercooled V12 engines.

Coolant                         Ethylene Glycol/Water

Capacity                       1649 cu ins 27 litres.

Max power Merlin 72/73    

             Take Off          1280 hp at 3000 rpm and +12 lbs boost.

                                       1,710 hp at 8,500 ft 18 lbs

                                       1,505 hp at 21,000 ft 18 lbs

 

Max power Merlin 76/77     

             Take Off          1250 hp at 3000 rpm and +12 lbs boost.

                                       1,655 hp at 10,000 ft 18 lbs

                                       1,475 hp at 21,000 ft 18 lbs

 

Gear change                21,000ft

Max cruise                   2650 rpm +7 lbs

Max climb                    2850 rpm +12 lbs

Engine weight            1645/1665 lbs


Propellers

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

 

Fuel Capacity

100/130 Octane

Fuselage                       2 x 68 gal(46.5 gal with mod 457)

Inner wing                   2 x 65 gal

                                       2 x 78 gal

Outer wing                   2 x 24 gal

                                       2 x 34 gal

Long Range                 151 gal (in bomb bay not normally fitted)

Drop Tanks                  2 x 40 gal Metal or

                                       2 x 50 gal Wooden or

                                       2 x 100 gal Papier Mache

 

Maximum Fuel                       887 Imp gal (844 gal with mod 457)

 

Performance

Max                                415 mph @ 28,000 ft

Max Cruise                  358 mph @25,000 ft

Econ Cruise                 250 mph

Climb                             7.75 min to15,000 ft.

Ceiling                          38,500 ft

Range                            Max 1,485 miles


Weights

Empty                            15,510 lb

Max                                23,350 lb

 

Armament

Total loads of up to 4000lbs:

 

4 x 500 lb bombs or Target Indicators internally

 

500 lb on each wing racks

 

1 x 4,000 lb HC bomb internally.

 

Typical load for the Light Night Striking Force to Berlin was

 

1 x 4,000 lb HC bomb and 50 gal fuel tank on each wing. This gave a range of 1470 miles. Enough for “Berlin and back before the bar closes.”

 

Typical flight time 4 hours 20 mins = 250 mph average if direct route taken, though indirect routes were usually taken to the target.

By way of contrast:

Lancaster        8500 lbs in 7 hrs.

B17                    5000 lbs in 8 hrs

 

Crew

Pilot and Observer (Navigator)

 

Equipment

Mark XIV Bombsight

Oboe Blind Bombing Equipment , H2S (some aircraft)

 

Pressure cabin

The aircraft was fitted with a pressure cabin which could maintain a cabin altitude of 24,500 ft at 35,000 ft.

 

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 347 B XVI’s were built of which none survive today.