航空翻译_飞行翻译_民航翻译_蓝天飞行翻译公司

当前位置: 主页 > 公司新闻 > 航空翻译 >

航空术语词典Dictionary of Aeronautical Terms 下

时间:2011-03-11 23:18来源:蓝天飞行翻译 作者:航空 点击:


OMNI (electronic navigation system). A term used for the VOR, Very-high-frequency Omni-Range, navigation system. See VOR.
omni bearing selector (electronic navigation instrument). A component in the VOR system on which the pilot selects the radial from the VOR station along which he wishes to fly. The omni bearing selector (OBS) shifts the phase of the reference signal inside the instrument, so the needle on the course deviation indicator (CDI) will center when the aircraft is on the selected radial.
omnidirectional antenna (radio antenna). A type of radio antenna that has the same field strength in all horizontal directions. An omnidirectional antenna is also called a nondirectional antenna.
omnidirectional microphone. A microphone that picks up sounds equally well from all directions around it. An omnidirectional microphone is also called a nondirectional microphone.
on-condition maintenance (aircraft maintenance). A type of aircraft maintenance in which parts are replaced only when their condition is such that they appear to be no longer airworthy. On-condition maintenance differs from life-limited maintenance, in which a part is replaced at the end of a specified number of operational hours or operational cycles, regardless of its apparent condition.
on-course indication (air traffic control). An indication on an instrument which provides the pilot a visual means of determining that the aircraft is located on the center line of a given navigational track, or an indication on a radarscope that an aircraft is on a given track.
one-hundred-and-eighty-degree ambiguity (navigation system error). An error inherent in some types of radio direction finding equipment in which the equipment cannot distinguish whether the signal being received is ahead of the aircraft or behind it. Automatic direction finding (ADF) equipment solves this problem by using a sense antenna.

one-hundred-hour inspection (aircraft maintenance inspection). An inspection required by 14 CFR
91.409 for FAA-certificated aircraft that are operated for hire, or are used for flight instruction for hire.
A 100-hour inspection is identical in content to an annual inspection, but it can be conducted by an aircraft mechanic who holds an Airframe and Powerplant rating, but does not have an Inspection Authorization. A list of the items that must be included in an annual or 100-hour inspection is included in 14 CFR 43, Appendix D.
one-shot rivet gun (sheet-metal working tool). A hard-hitting air hammer, used to drive large, solid aluminum alloy rivets. A one-shot rivet gun hits the rivet with a single hard blow each time the trigger is pulled. This is different from the action of an ordinary rivet gun, which delivers a continuous series of blows as long as the trigger is held down.
Aluminum alloy rivets are strain hardened by repeated hammering, and they can become so brittle they crack. To prevent this, they can be driven with a single hard blow from a one-shot rivet gun.

航空翻译 www.aviation.cn
本文链接地址:航空术语词典Dictionary of Aeronautical Terms 下