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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 ...

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 helic ...

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14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 ...

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 = ...

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_helico ...

分類：汽車及交通 > 飛機 2009年10月03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/helicop ...

分類：科學及數學 > 數學 2008年05月18日