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Range safety
In the field of rocketry, range safety may be assured by a system which is intended to protect people and assets on both the rocket range and downrange in cases when a launch vehicle might endanger them. For a rocket deemed to be ''off course'', range safety may be implemented by something as simple as commanding the rocket to shut-down the propulsion system or by something as sophisticated as an independent ''Flight Termination System'' (FTS) that has redundant transceivers in the launch vehicle that can receive a command to self-destruct then set off charges in the launch vehicle to combust the rocket propellants at altitude. Not all utilize flight termination systems on launch vehicles.
In the United States, range safety is usually the responsibility of a Range Safety Officer (RSO) affiliated with either the civilian space program led by NASA or the military space program led by the Department of Defense, through its subordinate unit the Air Force Space Command. At NASA, the range safety goal is for the general public to be as safe during range operations as they are in their normal day-to-day activities.〔()〕
RSOs are also present in the hobby of model rocketry. In this case, they are usually responsible for ensuring a rocket is built correctly, using a safe engine/recovery device, and launched correctly.
==Flight termination==
Some launch systems use ''flight termination'' for range safety. In these systems the RSO can remotely command the vehicle to self-destruct to prevent the vehicle from traveling outside prescribed safety zone. This allows as-yet unconsumed propellants to combust at altitude, rather than upon the vehicle reaching the ground.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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