
In aviation, the turn and slip indicator (T/S) and the turn coordinator (TC) variant are essentially two aircraft flight instruments in one device. One indicates the rate of turn, or the rate of change in the aircraft`s heading, the other part indicates whether the aircraft is in coordinated flight, showing the slip or skid of the turn. The slip ....
Found on
http://en.wikipedia.org/wiki/Turn_and_slip_indicator

(from the article `avionics`) ...power, such as the tachometer (in propeller craft), torquemeter (in turboprops), and exhaust pressure ratio indicator (in turbojets). Performance ...
Found on
http://www.britannica.com/eb/a-z/t/94
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