2015-09-06
236
The Traffic alert and Collision Avoidance System (or TCAS) is an aircraft collision avoidance system designed to reduce the incidence of mid-air collisions between aircraft. It monitors the airspace around an aircraft for other aircraft equipped with a corresponding active transponder, independent of air traffic control, and warns pilots of the presence of other transponder-equipped aircraft which may present a threat of mid-air collision (MAC). _____In modern glass cockpit aircraft, the TCAS display may be integrated in the Navigation Display (ND). ____TCAS involves communication between all aircraft equipped with an appropriate transponder (provided the transponder is enabled and set up properly). Each TCAS-equipped aircraft "interrogates" all other aircraft in a determined range about their position (via the 1030 MHz radio frequency), and all other craft reply to other interrogations (via 1090 MHz). This interrogation-and-response cycle may occur several times per second. ___Through this constant back-and-forth communication, the TCAS system builds a three dimensional map of aircraft in the airspace, incorporating their bearing, altitude and range. Then it determines if a potential collision threat exists.
Answer
1. What is TCAS?
2. What is TCAS designed for?
3. What communication does the system involve?
4. What are aircraft interrogated about by TCAS?
5. How often may interrogation-and-response cycle occur?
6. What data does the system deal with?
Complete
1. TCAS stands for …. 2. The function of TCAS is … 3. Aircraft is equipped with … 4. Data interrogated by TCAS are … 5. TCAS determines …
Fill in the missing verbs or nouns
| Verb | Noun |
| avoidance | |
| collision | |
| equipment | |
| interrogation | |
| warn | |
| exist | |
| threat | |
| reduce |
Match
| 1. TRANSPONDER | a. an aviation accident in which two or more aircraft come into contact during flight. |
| 2. TRAFFIC ALERT AND COLLISION AVOIDANCE SYSTEM | b. standard which provides pilots with a system independent of air traffic control to detect the presence of other aircraft which may present a threat of collision. |
| 3. MID-AIR COLLISION | c. a distance equivalent to 6076.1 feet or1 852 meters. |
| 4. AIRNORNE COLLISION AVOIDANCE SYSTEM | d. a service provided by ground-based controllers who direct aircraft on the ground and in the air. |
| 5. AIR TRAFFIC CONTROL | e. a system designed to alert the flight crew to potential conflicts with other transponder equipped airplanes flying in the same area. |
| 6. NAUTICAL MILE | f. an electronic device that produces a response when it receives a radio-frequency interrogation |
