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A OneThird Scale Model

A OneThird Scale Model 114 AIRCRAFT ENGINEERIN G May, 1930 Burnelli Tries Out in Miniature a Design for a Large Transpor t Monoplane with Variable Wings increase in area. In trials it is claimed that the R . J. BURNELL I has lately produced a fresh monoplane , t o have a 24-ft. wide aerofoil-fuselage, lift was more than doubled with the wing fully exampl e of the aerofoil-fuselage type of an d be powered by three 650 h.p. engines. In extende d and th e landing speed reduced t o 35 miles th e "X-3 " tw o 95-h.p. American "Cirrus " engines monoplan e for which he is well known and an hour. A variation of 15 m.p.h. in maximum ar e fitted. The wing is of the variable-surface and which he was probably the first to introduce, his speed, with the wing open and closed, is also stated t o have been obtained. The previously formed theor y that the centre of pressure is practically stationar y under all conditions of wing extension Characteristic s Lengt h overall .. .. .. 21 ft. 8 in. Heigh t overall .. .. .. 9 ft. 4 in. Span overall .. .. .. 49 ft. 0 in. Win g area .. .. .. 216 sq. ft. Aerofoil—fuselage area .. .. 102 sq.ft. Structur e weight .. .. .. 1,287 lb. Powe r plant weight .. .. 645 lb. Cargo load, fuel and oil, .. .. 660 lb. Gross weigh t .. .. .. 2,592 lb. Powe r (2 Cirrus, Mark III) .. 190 h.p . Fue l capacity .. .. .. 50 gals. Oil capacity .. .. .. 1½ gals. Speed— Maximu m .. .. .. 118 m.p.h. Cruising .. .. .. 90 m.p.h. Landin g .. .. .. 35 m.p.h. Rat e of climb per minute .. 628 ft. Ceiling (absolute) .. .. .. 14,000 ft. Enduranc e .. .. .. 3 hrs. Cruising range .. .. .. 270 miles. Loa d per square foot .. .. 8·15 lb. Loa d per horse-power .. .. 13·63 lb. ha s been substantiated by th e fact that no change in stabiliser setting proved necessary in flight. Floatin g ailerons are fitted below the wing at th e centre of pressure, and plates are fitted at the wing-tips to cut down end losses. The under­ carriage is four-wheeled, with each pair of wheels mounte d in tandem in a similar manner to that exampl e having been followed in recent Dyle et cambe r type recently described,* and capable of adopte d in th e Junkers G. 38.* The rear wheel is Bacala n and other European machines. Known extension both front and rear t o give a 25 pe r cent. in each case fitted with a brake. a s th e "X-3, " it is built as an exact one-third scale mode l of a projected large three-engined passenger * See AIRCRAFT ENGINEERING, February, 1930, p. 50. *See AIRCRAFT ENGINEERING, February, 1930, p . 41 . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

A OneThird Scale Model

Aircraft Engineering and Aerospace Technology , Volume 2 (5): 1 – May 1, 1930

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb029266
Publisher site
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Abstract

114 AIRCRAFT ENGINEERIN G May, 1930 Burnelli Tries Out in Miniature a Design for a Large Transpor t Monoplane with Variable Wings increase in area. In trials it is claimed that the R . J. BURNELL I has lately produced a fresh monoplane , t o have a 24-ft. wide aerofoil-fuselage, lift was more than doubled with the wing fully exampl e of the aerofoil-fuselage type of an d be powered by three 650 h.p. engines. In extende d and th e landing speed reduced t o 35 miles th e "X-3 " tw o 95-h.p. American "Cirrus " engines monoplan e for which he is well known and an hour. A variation of 15 m.p.h. in maximum ar e fitted. The wing is of the variable-surface and which he was probably the first to introduce, his speed, with the wing open and closed, is also stated t o have been obtained. The previously formed theor y that the centre of pressure is practically stationar y under all conditions of wing extension Characteristic s Lengt h overall .. .. .. 21 ft. 8 in. Heigh t overall .. .. .. 9 ft. 4 in. Span overall .. .. .. 49 ft. 0 in. Win g area .. .. .. 216 sq. ft. Aerofoil—fuselage area .. .. 102 sq.ft. Structur e weight .. .. .. 1,287 lb. Powe r plant weight .. .. 645 lb. Cargo load, fuel and oil, .. .. 660 lb. Gross weigh t .. .. .. 2,592 lb. Powe r (2 Cirrus, Mark III) .. 190 h.p . Fue l capacity .. .. .. 50 gals. Oil capacity .. .. .. 1½ gals. Speed— Maximu m .. .. .. 118 m.p.h. Cruising .. .. .. 90 m.p.h. Landin g .. .. .. 35 m.p.h. Rat e of climb per minute .. 628 ft. Ceiling (absolute) .. .. .. 14,000 ft. Enduranc e .. .. .. 3 hrs. Cruising range .. .. .. 270 miles. Loa d per square foot .. .. 8·15 lb. Loa d per horse-power .. .. 13·63 lb. ha s been substantiated by th e fact that no change in stabiliser setting proved necessary in flight. Floatin g ailerons are fitted below the wing at th e centre of pressure, and plates are fitted at the wing-tips to cut down end losses. The under­ carriage is four-wheeled, with each pair of wheels mounte d in tandem in a similar manner to that exampl e having been followed in recent Dyle et cambe r type recently described,* and capable of adopte d in th e Junkers G. 38.* The rear wheel is Bacala n and other European machines. Known extension both front and rear t o give a 25 pe r cent. in each case fitted with a brake. a s th e "X-3, " it is built as an exact one-third scale mode l of a projected large three-engined passenger * See AIRCRAFT ENGINEERING, February, 1930, p. 50. *See AIRCRAFT ENGINEERING, February, 1930, p . 41 .

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: May 1, 1930

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