airscrew

1 Henson, completely discouraged, married and went to America; Stringfellow persisted, and in 1848 made a smaller model, ten feet in span, with airscrews sixteen inches in diameter.

2 First, the structure of helicopter airscrew loading system was introduced, On the basis of single channel loading system's math model, the system's dynamic performance was analyzed.

论文首先介绍了直升机旋翼加载系统的结构，在建立了单通道加载系统的数学模型的基础上，分析了加载系统的动念性能。

3 The airscrew, ten feet in diameter, was driven by a steam-engine of three horse-power, and the speed attained was about six miles an hour.

4 This ship, with an airscrew driven by manpower, attained a speed of five and a half miles an hour.

5 In all but a few types of machine the airscrew is now retained in the forward position.

6 On this scale he was successful with a machine driven by an airscrew and with a machine driven by the flapping of wings.

7 Long before the first true flying machine was built and flown balloons of a fish-like shape had been driven through the air by mechanical airscrews.

8 They planed down at once, and landed in a small field, finishing up in a wood, where they damaged their undercarriage, wings, and airscrew.

9 This toy, which weighed only a little over half an ounce, was supported on wings, and was driven forward by an airscrew made of two feathers.

10 Towards the close of the century a German engineer called W�lfert constructed a dirigible rather smaller than the French airship, with a slightly more powerful engine, and two airscrews of twelve feet in diameter.

11 Senhor Augusto Severo, a Brazilian, made a spindle-shaped airship, ninety-eight feet long, driven by two airscrews, placed one at each end of a framework which formed the longitudinal axis of the airship.

12 The motive power was supplied by twisted strands of rubber which, as they untwisted, turned the airscrew.

13 It took the air near Berlin on the 3rd of November 1897, but something went wrong with the airscrew belts, and it was seriously damaged in its hasty descent.

14 The observer, being seated in the very prow of the machine, could fire a gun forward without being obstructed by the airscrew.

15 A larger model, with two airscrews driven by clockwork, was exhibited in 1850 by M. Jullien, a clockmaker of Paris, and flew successfully against a slight breeze.

16 The airscrews, built from their own calculations, gave in useful work two-thirds of the power expended.

17 An engine of four horse-power, weighing forty pounds, with a wooden airscrew five feet in diameter, was, by his calculations, amply sufficient to maintain his glider in horizontal flight.

18 The first of these objections was not fully met until firing through the airscrew was introduced; the second was for a long time an accepted idea.

19 The calibre, governed by a Windfanger airscrew, cranks out a frequency of 28,000 vph that provides you with a 48-hour power reserve.

20 A good illustration of this may be found in the question of the airscrew.

1 推进器

prop propeller propellor

2 螺旋桨

screw prop propeller windmill propellor