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The Kessler syndrome (also called the Kessler effect, [1] [2] collisional cascading, or ablation cascade ), proposed by NASA scientist Donald J. Kessler in 1978, is a scenario in which the density of objects in low Earth orbit (LEO) due to space pollution is numerous enough that collisions between objects could cause a cascade in which each ...
A traffic alert and collision avoidance system ( TCAS, pronounced / tiːkæs /; TEE-kas ), is an aircraft collision avoidance system designed to reduce the incidence of mid-air collision (MAC) between aircraft. It monitors the airspace around an aircraft for other aircraft equipped with a corresponding active transponder, independent of air ...
A ground proximity warning system ( GPWS) is a system designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. The United States Federal Aviation Administration (FAA) defines GPWS as a type of terrain awareness and warning system (TAWS). [1] More advanced systems, introduced in 1996, [2] are ...
The training, aimed to step up their combined capability to respond to North Korea's threats, follows a multi-year joint exercise plan set up after last year's three-way summit, the South Korean ...
The Jacqueline Kennedy Onassis School at American Ballet Theatre ( ABT/JKO School) is the associate school of American Ballet Theatre located at 890 Broadway, within the Flatiron District of Manhattan, New York City. The school comprises a children's division for ages 4 to 12, a pre-professional division for ages 12 to 18, and the preparatory ...
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Survival handbook of the United States Army Air Forces (USAAF) from 1944. Survival, Evasion, Resistance, and Escape ( SERE) is a training program, best known by its military acronym, that prepares U.S. military personnel, U.S. Department of Defense civilians, and private military contractors to survive and "return with honor" in survival ...
All Army Reserve personnel undergo CBRN warfare defense training. The Irish national police force, the Garda Síochána, has a number of nationwide CBRN response teams. The teams are based regionally (in six regions; Dublin, Eastern, Northern, Southern, South-Eastern & Western) and began operating in 2004 with 100 trained officers (170 ...
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 ...
The NASA Aviation Safety Reporting Service (ASRS) received 11,168 reports of runway incursions between January 2012 to August 2017, at a rate of approximately 2000 per year. More than 40 percent of reports were filed by general aviation pilots, and 36 percent by air carrier pilots.