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  2. Airborne collision avoidance system - Wikipedia

    en.wikipedia.org/wiki/Airborne_collision...

    An airborne collision avoidance system (ACAS, usually pronounced as ay-kas) operates independently of ground-based equipment and air traffic control in warning pilots of the presence of other aircraft that may present a threat of collision. If the risk of collision is imminent, the system recommends a maneuver that will reduce the risk of ...

  3. Terrain awareness and warning system - Wikipedia

    en.wikipedia.org/wiki/Terrain_awareness_and...

    In aviation, a terrain awareness and warning system (TAWS) is generally an on-board system aimed at preventing unintentional impacts with the ground, termed "controlled flight into terrain" accidents, or CFIT. [1] The specific systems currently in use are the ground proximity warning system (GPWS) and the enhanced ground proximity warning ...

  4. Collision avoidance system - Wikipedia

    en.wikipedia.org/wiki/Collision_avoidance_system

    A collision avoidance system (CAS), also known as a pre-crash system, forward collision warning system (FCW), or collision mitigation system, is an advanced driver-assistance system designed to prevent or reduce the severity of a collision. [2] In its basic form, a forward collision warning system monitors a vehicle's speed, the speed of the ...

  5. Controlled flight into terrain - Wikipedia

    en.wikipedia.org/wiki/Controlled_flight_into_terrain

    In aviation, a controlled flight into terrain (CFIT; usually / ˈsiːfɪt / SEE-fit) is an accident in which an airworthy aircraft, fully under pilot control, is unintentionally flown into the ground, a mountain, a body of water or an obstacle. [1][2] In a typical CFIT scenario, the crew is unaware of the impending collision until impact, or it ...

  6. Survival, Evasion, Resistance and Escape - Wikipedia

    en.wikipedia.org/wiki/Survival,_Evasion...

    Survival handbook of the United States Army Air Forces (USAAF) from 1944. Survival, Evasion, Resistance, and Escape (SERE) is a training concept originally developed by the United Kingdom during World War II. It is best known by its military acronym and prepares a range of Western forces to survive when evading or being captured.

  7. United States Army Combat Readiness Center - Wikipedia

    en.wikipedia.org/wiki/United_States_Army_Combat...

    The U.S. Army Combat Readiness Center (USACRC) is a United States Army organization. The Army Safety Team provides safety and risk management expertise to the Army, DoD, and other agencies; develops, maintains and evaluates Army Safety policy and programs; and communicates relevant risk management information to Army Leaders for the preservation of our Soldiers, Civilians, Families and vital ...

  8. Collision avoidance in transportation - Wikipedia

    en.wikipedia.org/wiki/Collision_avoidance_in...

    Collision avoidance in transportation. A simple collision avoidance system. In transportation, collision avoidance is the maintenance of systems and practices designed to prevent vehicles (such as aircraft, motor vehicles, ships, cranes and trains) from colliding with each other. They perceive the environment with sensors and prevent collisions ...

  9. Vortex ring state - Wikipedia

    en.wikipedia.org/wiki/Vortex_ring_state

    The vortex ring state (VRS) is a dangerous aerodynamic condition that may arise in helicopter flight, when a vortex ring system engulfs the rotor, causing severe loss of lift. Often the term settling with power is used as a synonym, e.g., in Australia, the UK, and the US, [2][3][4] but not in Canada, which uses the latter term for a different ...