首页
登录
职称英语
Collision between an aircraft and one or more birds is termed a bird-strike.
Collision between an aircraft and one or more birds is termed a bird-strike.
游客
2023-10-13
3
管理
问题
Collision between an aircraft and one or more birds is termed a bird-strike. Pilots sometimes record a birdstrike while at cruising altitudes, but most of them happen when an aircraft is relatively close to the ground, usually in proximity to an airport and during the circling, descent to land or take-off phases of a flight.
Bird-strikes may cause significant damage to an aircraft and/or, if the birds are ingested into a jet engine, a significant and sudden loss of power. If this were to happen during take-off or initial climb of a fully loaded passenger aircraft the results could be catastrophic—loss of the aircraft and the lives of those on board. Any bird is a potential hazard to aircraft and this is especially true as bird numbers and bird size increase.
Unfortunately airports themselves can be attractive to birds-rodents, insects and other small animals are a food source often found in flat grassed areas such as the runway strips. Even so, this problem can be reduced by careful habitat management or bird harassment techniques practised by airport maintenance and safety personnel.
Further problems may arise because the airport is located on bird migration routes. These may have existed prior to the airport site selection—but may not have been taken into account because the problem was not understood at the time—or have only been recently established because the birds have found an attractive new food source. Care needs to be taken by local authorities in deciding the location of rubbish tips, or when permitting other land uses that may be attractive to birds in this way. Of course these effects cannot always be anticipated with certainty since birds such as gulls have been recorded as travelling 50 kilometres or more from their roosting area to an attractive food source.
Agricultural uses may be thought desirable because they are compatible with high levels of noise exposure, but they can have an adverse effect on air-craft operations if birds are attracted during seeding or crop cultivation. Birds may also be attracted to pig farms where garbage is used as fodder. Even tree plantings can present a hazard if the species provides an attractive food source or nesting habitat.
Local authority planning schemes often apply strict controls on developments such as abattoirs, cattle feed lots, grain handling, piggeries, canals and marina developments, fish farms, and suchlike. In most cases these uses will not be permitted without a full environmental study. That study should be required to deal with the question of likely bird hazards if the proposed location is in proximity to an airport.
In some instances it may be necessary to consider ways of managing a particular land use in order to reduce its attractiveness to birds, for example the adoption of land-fill measures at garbage tips, or enclosed rather than open-air activity. Specialist ornithological opinion may be necessary. In such cases it may not be possible to implement immediate changes in land use, but this should not inhibit the adoption of long-term measures which are designed to achieve this.
A collision between an aircraft and one or more birds is known as a birdstrike. It usually happens when an aircraft is【R1】______, and may result in significant damage of the aircraft or loss of the aircraft and【R2】______of passengers and crew if they occur during take-off or initial climb. Because birds can find plenty food in flat grassed areas, airports are especially attractive to birds. However, the danger can be minimized by【R3】______Local authorities need to take care when deciding on【R4】______. It is suggested that a full environmental study should be made before making plans of developments on the land in proximity to an airport. Local authorities should get advice from specialists and take【R5】______in order to bring about changes in land use. [br] 【R1】
选项
答案
close to the ground
解析
(文章第一段第二句提到but most of them happen when an aircraft is relatively close to theground。“所有这些飞行事故的发生都是在飞机接近地面的时候。”)
转载请注明原文地址:https://tihaiku.com/zcyy/3095038.html
相关试题推荐
Whatdosomescientistsusedroneaircrafttor?[originaltext]Somescientistsh
Itisconvenienttodistinguish(区分)betweennonverbalandverbalcommunication,j
Thereisabigdifferencebetweentownlifeand【D1】__________inEngland.
Thereisabigdifferencebetweentownlifeand【D1】__________inEngland.
Thereisabigdifferencebetweentownlifeand【D1】__________inEngland.
Collisionbetweenanaircraftandoneormorebirdsistermedabird-strike.
Collisionbetweenanaircraftandoneormorebirdsistermedabird-strike.
Collisionbetweenanaircraftandoneormorebirdsistermedabird-strike.
Collisionbetweenanaircraftandoneormorebirdsistermedabird-strike.
Effectivereadingrequiresnotonly"readingbetweenthelines,"butalso"w
随机试题
Wisebuyingisapositivewayinwhichyoucanmakeyourmoneygofurther.T
Forthispart,youareallowed30minutestowriteashortessayonthetopicSh
SpaceTourism[A]Makeyourreservationsnow.Thespacetourismindustry
关于肝硬化的叙述,正确的是A.肝硬化时,肝糖原合成增多B.肝硬化时,乳酸,丙酮酸
小李夫妇就共同房屋进行产权分割时将涉及到的问题向理财规划师咨询,下列关于这些问题
A.NaCO B.ZnO下列各题应选用的基准物质是 C.对氨基苯磺酸 D.
肠系膜动脉栓塞引起的肠梗阻属于 A.机械性肠梗阻B.血运性肠梗阻 C.痉挛
下列哪一职位,不属于国务院的组成人员?( )A.国务院副总理 B.国务委员
根据《房屋建筑与装饰工程工程量计算规范》(GB50854-2013),框架柱的柱
关于宫颈原位癌的描述,正确的是( )。A.宫颈上皮内瘤变即为宫颈原位癌 B.
最新回复
(
0
)