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英漢對(duì)照民用航空詞典                                     BOEING

UPSET HEAD, The head produced on the tail of a rivet  鉚釘鐓頭，

during the installation driving process. (See           在鉚釘鉚接過(guò)程中，鉚釘尾部一端形成的凸頭（見(jiàn)

Manufactured Head.)                                   Manufactured Head）。

V

V  (TAKEOFF DECISION SPEED), Is the maximum

 1                                                    V1 （起飛決斷速度），

speed at which the rejected takeoff maneuver can be     根據(jù)聯(lián)邦適航條例的規(guī)則和程序，飛機(jī)能進(jìn)行中斷起飛

initiated and the airplane stopped within the remaining 且在剩余場(chǎng)長(zhǎng)內(nèi)停止的最大速度。它是在起飛滑跑時(shí)仍可

field length under the conditions and procedures defined 停住飛機(jī)的最后決策點(diǎn)。

in the FAR's. It is the latest point in the takeoff roll where

a stop can be initiated.

V2 (TAKEOFF SAFETY SPEED), The speed flown after       2 （起飛安全

                                                      V           速度），

takeoff during engine-out climbout maneuvers to assure  在一發(fā)不工作起飛后的爬升中為保證足夠的梯度能力

adequate gradient capability and maneuver margin.     和操縱裕度所飛的速度。

VACUUM, A negative pressure or pressure below         真空，

atmospheric, measured in inches or millimeters of       負(fù)壓或比大氣壓力低的壓力。常用若干寸（或若干毫米）

mercury.                                              汞柱。

VAPORIZE, The mechanical process in which a liquid is 蒸發(fā)，

changed into a vapor.                                   液體汽化的物理變化過(guò)程。

VECTOR, A heading issued to an aircraft to provide    引導(dǎo)，

navigational guidance by radar.                         由雷達(dá)提供的航向，以給予飛機(jī)導(dǎo)航引導(dǎo)。

VENT, A small hole orifice or restrictor in a component 通氣裝置，

for allowing pressure in the component to be the same   部件內(nèi)，用以使部件內(nèi)的壓力與周圍環(huán)境壓力相同的小