| QUOTE (飛行公仔 @ Oct 3 2005, 03:08 PM) | chinlin
謝謝您提供COLLECTIVE PITCH CONTROL&CYCLIC PITCH CONTROL名詞定議!
如有那位大大能幫忙翻譯!!那就更棒!  |
大大
我先跳下來翻好了,先翻一部分(COLLECTIVE PITCH CONTROL):
COLLECTIVE PITCH CONTROL:
The collective pitch control, located on the left side
of the pilot』s seat, changes the pitch angle of all
main rotor blades simultaneously, or collectively,
as the name implies.
位於飛行座的左邊有個collective pitch控制器用來同步或者是所謂的
collectively(集合/集中地)改變所有的主旋槳之攻角
(chinlin註:主旋槳不只有2片也可能2片以上,這是為何它用'所有'的字眼)
它的作用如同的字面意義寫的一樣(collective).
As the collective pitch control
is raised, there is a simultaneous and equal
increase in pitch angle of all main rotor blades;
當collective pitch控制器提升上來,所有主旋槳會同時以相當的pitch角度
增加量來改變角度變化.
as
it is lowered, there is a simultaneous and equal
decrease in pitch angle.
反之,則相反!
This is done through a
series of mechanical linkages and the amount of
movement in the collective lever determines the
amount of blade pitch change.
這些動作是透過一系列的機械連結而且在collective lever的移動量
可以決定主旋槳的pitch(角度)改變量.
(collective lever不知怎翻才好,這東西我感覺字意像是一個可以拉高拉低的東東)
[Figure 4-1] An
adjustable friction control helps prevent inadvertent
collective pitch movement.
一個可調整摩擦控制(adjustable friction control)可避免
不適當的collective pitch移動 (chinlin註:感覺像是保險桿防止疏忽帶來的危險)
Changing the pitch angle on the blades
changes the angle of attack on each blade. With
a change in angle of attack comes a change in
drag, which affects the speed or r.p.m. of the
main rotor. As the pitch angle increases, angle
of attack increases, drag increases, and rotor
r.p.m. decreases. Decreasing pitch angle
decreases both angle of attack and drag, while
rotor r.p.m. increases.
改變主旋翼的pitch角度就會改變每一個槳的攻角(好像在說廢話)
透過攻角的改變會帶來一個拉力(drag),這個會影響主旋槳的速度
(或者轉速R.P.M)
(國外就是喜歡step by step敘述, 白吃也能懂)
減少pitch角度會同時減少攻角與拉力,因此主旋槳的速度(RPM)就會提高.
In order to maintain a
constant rotor r.p.m., which is essential in helicopter
operations, a proportionate change in
power is required to compensate for the change
in drag.
為了維持固定的轉速RPM(這個在直昇機非常經典的運作)
,power(引擎的力量)均衡的改變是必須的,主用要來來補償這些拉力的所帶來的改變.
This is accomplished with the throttle
control or a correlator and/or governor, which
automatically adjusts engine power.
這動作是透過油門控制或者是correlator/governor來完成的,
它們能夠調整引擎的力量大小.
後續
| 
發表於 2005-10-2 22:16
發表於 2005-10-2 22:59
發表於 2005-10-3 09:42
，主要是單顆伺服機單純推動pitch變化而不影響其它方向舵伺服機的運作 
！
！固名思議，就是同時集合三顆伺服機來做PITCH變化 
！mccpm主要是當您控制副翼與昇降時只須單顆伺服機來動作即可完成 
！
！以上是個人所瞭解的，如有錯誤，還望大大不吝指教 
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