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Aviation History
1916
1916 - 0016.PDF
A "POPULAR" TYPE AEROPLANE DESIGN. *•&**. By C, M. POULSEN. HEN man first succeeded in accom plishing extended flights on the heavier-than-air type of machine, he did so with the aid of engines of comparatively low power, and when machines of to-day are fitted with motors of several hundred horse power it is chiefly, or at any rate to a very great extent, due to the fact that the demand for speed, climb and carrying capacity has grown at a much more rapid rate than has our knowledge of the science of aviation. By this I do not mean to infer that when this knowledge is of a more thorough nature machines will be developed which will fly success fully with engines of half-a-dozen horse-power or even less, but I do think that as we learn more about the subject we shall produce machines which will do all that the present-day machine does with very much smaller power, or, looking at it in another way, do far better with the same power. If aviation is to take its place in our daily life, much as does motoring nowadays, and become a popular sport enjoyed not only by a comparatively few enthusiasts, but by people in their thousands, the aeroplane must be put on a commercial basis and become so efficient aerodynamically that it will not require motors of abnormally high power with corresponding high initial cost, upkeep and fuel con sumption. That the military aspect of aviation will continue ta expand at an enormous rate after the war nobody who is able to see further than the end of his nose will doubt,, since the development of aircraft will nullify that isolation with which the sea has up to the present kindly provided these islands. That the sporting side of flying will receive a similar impetus seems to me equally certain, in view of the grip aviation has already obtained on the public imagination, and the rapidity with which the interest in all matters aeronautical is spreading in ever-widening circles. Already the development of service aviation has been instrumental in starting the ball rolling, and one receives proof daily—on the 'buses, in the streets, and on the rail ways—of the intelligent way in which the B.P. has grasped the significance of the fifth arm. Some day—and not very distant either—this interest in and understanding of flying is going to manifest itself in a closer, more intimate study of the possibilities of the aeroplane as a. z, , - SPEED lbs. O < ) i ir Fo, wh . Vol Cov So o Fte. * \ B a no mi *r *f *\. m A rrc. nti tun er I tvo Je c • fu int. 38 L • 7 • S - H ?esj f. A - Co "oa M- <tt II s ant M P i> RESISTANCE c U RVE OF MODEL B .F S6 • ter jt.a km r*d sta If \ 76 If 1 ft F,c lur net 1 sa arha %• efft Vit Svi u r« ize ;e c H - ..._* t j 1 > f CIS jen I A • t Ba PI > * y t a m AT efqrei em tio Foi *u m ci v^ ofl \>r -_ t>t- > _ rt?a/ P it Hoc ft 6S St T CO Stance 1: Si mj rz= itta HM fies 0 o n &p e f Krn c.ff of TO, 9 o o-m pe ve • >/>- .. *a -^4 r i (s s 22 . l*Si I c i Pes / t t % ;mf ta >,H- ist OOl kp r dn set ,Ht w» ", >tj » / era c "0 .« u>c ^ tss >*rr von err net 1 tut jry] oo 00 t ft 2 FTJ y s •d at in s It I o 1 •e 1 CS : JSI itta y D ( £C Vy 7SO V f 0 '1 • / G * 5'C •!* la \/ ffe *PP ¥ M • »v 4 / B / &£ ren "0A )nd • /«* A v s ce) J /s' ; K' ' rox c / / / ^m 5 I J t / &r z / • •/ /% QO J / 1— o __ z ct 1 1 7 t be* ~\Vel 2 a / / . 4 1 L . | / tfx: t ten • / i i y f 2 R. R r- R H Dm \~t %c s £*: Let Max. S est 10: gtl <ti. ~sl " '" JO 5 1 . P" Ft ^£' If /?' 2' 11 . f34 CM WD 3 III 1 "i 1 Resistance curve of the model of B.F. 36.
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