直升飞机电子着陆系统 Helicopter Electronic Landing Path
飞机自动着陆系统 automatic aircraft landing system
飞机盲目着陆系统 navaglide
K波段传感器也更不易于受到来自机场着陆系统以及飞机和舰船雷达的干扰。
K-Band sensors are also less susceptible to interference from airport landing systems and air or sea craft radar.
人们还研制了地面控制系统，以便在机组人员不能工作或发生劫机时，地面能够控制飞机，安全着陆。
Work is also being done on ground-based systems that could take over the controls of an airliner and land it safely if the crew were to become incapacitated in some way or the flight were hijacked.
这次飞行的目的是为了测试新的航天飞机系统能否安全的进入轨道和安全的返回地球着陆。
The aim of this flight was to test the new shuttle system, to go safely up into orbit and to return to the Earth for a safe landing.
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