Boeing Fortress I

Boeing Fortress I

An aircraft recognition card with a side photograph of a flying B17 and on the reverse three silhouettes and technical details.

One double sided printed card

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MDarbyCAH927893-180202-010025, MDarbyCAH927893-180202-010026

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VALENTINE’S “AIRCRAFT RECOGNITION” CARDS

VALENTINE & SONS LTD.,
DUNDEE and LONDON.
Printed in Gt. Britain.

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“THE PROFICIENCY TEST” SERIES. No.–11

THE BOEING FORTRESS I.
BRITISH LONG RANGE BOMBER.

Four 1,200 h.p. Wright Cyclone R-1820 motors and crew of nine. Heavy armaments with machine guns in flush turrets. Self-sealing fuel tanks and protective armour, made in U.S.A. 5.000 lb. bomb and ammunition.

Dimensions. – Span, 103 ft. 9 1/2 in.; length, 67 ft. 10 1/2 in.; height, 15 ft. 4 1/2 in.; wing area, 1,486 sq. ft.; aspect ratio, 7.25.

Weights. – Empty, 29,617 lb.; loaded, 47,500 lb.

Performance. – Max. speed, 320 m.p.h. at 20,000 ft.; max. range, 3,000 miles at 245 m.p.h. at 30,000 ft.; initial climb, 1,300 ft. per min.; service ceiling, 36,000 ft.; take off run with max. overload, 1,000 ft.

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THESE DRAWINGS, REPRODUCED FROM “AIRCRAFT IDENTIFICATION,” ARE THE COPYRIGHT OF “THE AEROPLANE.”

RECOGNITION POINTS. – Four motor low mid-wing monoplane; equal taper on leading and trailing edges; rounded tips, dihedral from roots. Rounded fuselage tapering off into tall single fin and rudder; big triangular shaped cantilever tailplane.