Spotter's Quiz No 8
Twin-Engine, Twin-Tail Bombers

57 Dornier Do-17

First in a long series which ended with the air-cooled Do-17S, this was the ship which won the name Flying Pencil because of long nose, fuselage only a few feet shorter than the wing. It has wing span of 59' feet, overall length of 53' 6", maximum height of 15' 9". Powered by two BMW liquid-cooled engines, each rated at 830 hp, the 17 has speed of approximately 270 mph, range of 1,000 miles.

Wing is high cantilever type with equal sweep-back and taper, no dihedral, round wing tips.

Engine is inline type encased in squared nacelles which taper almost to wing trailing edge.

Fuselage is extremely long and thin, accented by long transparent nose, pronounced wing fillets.

Tail is twin type, with straight rudders overhanging swept-back fins. High box-like tailplane.

High Wing. Long Nose

58 North American B-25

Known officially as the Mitchell, the B-25 has proved effective everywhere, particularly devastating during raids on Tokyo. It has a wing span of 67' 6", is 54' long, measures 15' 10" in overall height. Powered by two Wright radial engines, rated at 1,350 hp each, it has speed in excess of 300 mph, fairly long range, effective service ceiling, can carry load estimated at 4,000 pounds.

High midwing of semi-gull construction set almost at fuselage center, equal sweep-back and taper.

Engines have radial cowlings extending well forward from leading edge, tapering aft of wing.

Fuselage is long and slender, with wing at approximate center, rounded nose, tail gun emplacement.

Tail is twin type, marked sweep-back, slight taper. Vertical surface inverted keystone shape.

Wing Position

59 Armstrong Whitley

No longer ranked as a first-line plane on the European front, the cumbersome Whitley may continue to give limited service throughout the coming year. One of the largest twin-engine types on which accurate figures can be published, it has wing span of 84', overall length of 70' 6", and height of 15'. Powered by two Rolls-Royce Merlin engines, liquid-cooled, the Whitley has top speed of 230 mph.

Wing is mid cantilever type, thick chord, slight dihedral inboard, marked dihedral outboard.

Engines are inline type set into thick wing, tapering to aileron, extending well forward from wing.

Fuselage has little taper on top and bottom, straight sides, short nose, gun turret aft of tail.

Tail is inset twin type with horizontal brace, rectangular tailplane, straight rudder.

Thick Wing, Tail Brace

60 Dornier Do-215

Similar to the Flying Pencil in general design, the newer Do-215 has much shorter nose, several improvements in performance. It has wing span of 59', overall length of 53' 6", is 15' 9" high. Usually powered by two liquid-cooled Daimler-Benz engines of 1,600-hp rating, it has speed of 335 mph, ceiling exceeding 30,000 feet, range of about 800 miles with bomb load estimated at 3,000 pounds.

Wing is high cantilever type with equal sweep-back and taper, round tips, no dihedral.

Engines are inline type encased in squared nacelles which taper almost to wing trailing edge.

Fuselage is extremely long and thin, but has short nose. Pronounced wing fillets on broad wing.

Tail is twin type, straight rudders overhand swept- back fins, box-like tailplane high on fuselage.

High Wing. Short Nose

61 Handley-Page Hampden

A veteran among twin-engine bombers, the Hampden is now being retired from active duty in favor of improved versions of the Beaufort and Blenheim. Spotters find the Hampden interesting, however, because of the concentration of combat activities in the forward section. It has a wing span of 69' 2", length of 53' 7", height of over 15'. Powered by two Bristol 980-hp radials, it has speed of 265 mph.

Wing is low cantilever type, marked dihedral, straight center section, tapered trailing edge.

Engines have radial nacelles, extend little from leading edge, taper almost to trailing edge.

Fuselage has thin plan and profile, square sides, gun turrets top and bottom far forward.

Tail is twin type with inset triangular fin, straight rudder, swept-back tailplane set far back.

Boom-Type Tail

62 Caproni 135 bis

Smallest of medium bombers in this category, the Caproni 135 bis has been unimportant so far. It has a wing span of 53', overall length of 40', maximum height of only 10' 6". Powered by two 1,000-hp Piaggio radial engines, it has speed of 273 mph, ceiling of 23,000 feet, range of 575 miles, carries bomb load of 2,000 pounds. Like most Italian bombers, it has excellent visibility, heavy defensive armament.

Wing is low cantilever type, slight dihedral, marked sweep-back and taper.

Engines have radial cowlings protruding from leading and trailing edges of wing.

Fuselage is broad, has straight sides and top, large transparent section aft of wing and bomb bay.

Tail is twin type, inset circular fins, rudders set close to fuselage. High swept-back tailplane.

Circular Inset Pins

63 Lockheed A-29

Developed from the successful Lockheed 14, known officially as the Hudson, this was one of the first bombers to enter British service. It has wing span of 65' 6", overall length of 44', maximum height of about 12'. Powered by either Wright or Pratt & Whitney radial engines rated at 1,350 and 1,050 hp respectively, it has speed of about 290 mph, service ceiling exceeding 25,000 feet, range up to 2,000 miles.

Wing is low-mid cantilever type, equal taper and sweep-back, pointed tips, trailing edge flap guides.

Engines have radial cowlings, mounted under wing and tapering to trailing edge.

Fuselage is thick, short, cigar-shaped with large nose transparency, spherical gun turret on top.

Tail is twin type with inset egg-shaped fins, rudders. Sweep-back, slight taper on tailplane.

Top Turret, Flap Guides

64 Avro Manchester

That Allied production of new designs is outstripping German efforts is indicated by the fact that the Manchester, announced for the first time last Spring, is no longer ranked with first-line British bombers. Powered by liquid-cooled Rolls-Royce engines, larger than the Whitley, it has wing span of 90' 1", is 70' long, measures 19', 6" in height. It has power-driven turrets in nose, on top, behind twin tail.

Wing is high midwing cantilever type, straight center section, outboard dihedral, taper and sweep-back.

Engines are in-line type with compact, nacelles set into thick wing taper to trailing edge.

Fuselage has straight sides, straight top and bot- tom lines tapered sharply aft of mid-section.

Tail is twin type with tall, egg-shaped outrigger fins and rudders, tailplane far forward from turret.

Egg-Shaped Fin Far Forward

This "Spotter's Quize" column was originally published in the December, 1942, "Complete Spotter's Guide" issue of Air News magazine, vol 3, no 8, pp 49, 56-57.
The original Quiz includes 16 photos and 8 three-view silhouettes, 2 photos and 1 three-view for each type listed.
Photos credited to Air News Photo, British Combine, European, William Larkin, North American, Lockheed.