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2. ### helicopter

A helicopter is a type of rotorcraft in which lift and thrust are supplied by.... In contrast with fixed-wing aircraft, this allows the helicopter to take off and land vertically, to hover, and to fly forwards, backwards...

3. ### Theory of helicopter

Helicopter has 2 sets of blades, one on the top of cabinet, and anther.... This pressure difference can be as larage as to support the weight of the helicopter as stationary. If we increase the pressure difference by a little bit, there is...

4. ### fast helicopter , fast answer!

我覺得係 Bell helicopter - The 407. Commerical Aircraft泥啵． 唔知岩唔岩呢...

分類：汽車及交通 > 飛機 2009年04月29日

5. ### PS2 GTA LCS helicopter

機場有直昇機， 但都只係背景， 不能駕駛。 整個遊戲是沒有直昇機可以供玩家駕駛的。 2008-05-02 22:26:11 補充： 真的有直昇機用．．． 不過只有任務先可以偷到直昇機， 平常是沒可能偷到的（連直昇機名稱也沒有顯示，可以說是只有在任務時才能偷到的）。 http://uk.youtube.com/watch?v...

6. ### a helicopter rotor

(a) 550 rev/min = 550 x 2.pi/60 rad/s = 57.6 rad/s Linear speed of blade tip = 57.6 x 3.4 m/s = 196 m/s (b) Radial acceleration = 3.4 x 57.6^2 m/s^2 = 11280 m/s^2 2013-05-28 18:27:13 補充： (b) when expressed in terms of g, 11280 m/s^2 = 1128g take g = 10 m/s^2

7. ### vcs cheat helicopter

我之前上嗰d網,有人講過(5知係咪真),佢話vcs冇尼個cheat...

8. ### Why people in helicopter usually wear...

rotation of propellors make a helicopter move. but the rotation of propellors is very noisy. so ear protector can protect the ear from damage.

9. ### 點解有D直昇機沒有後面的螺旋翼又唔會打轉

The Helicopter in question is MD-902, that comes with a boeing new NOTAR...work 圖片參考：http://upload.wikimedia.org/wikipedia/commons/3/32/Notar_ helicopter .png The key is the Jet Exhaust System, as...

分類：汽車及交通 > 飛機 2009年10月05日

10. ### maths F.3 --urgent

乜點都無好難計 設 helicopter 既位置叫 A helicopter 既位置垂直點落去個海面個點叫...一陣補翻 2008-05-18 17:28:09 補充： http://www.alfa2.info/0611/ helicopter &ships.GIF 圖片連結 畫得樣衰 希望諒解

分類：科學及數學 > 數學 2008年05月28日

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