106: AVIONICS/ELECTRICAL FUNDAMENTALS
SH/HH-60F/H EAWS SPECIFIC
1. Define the following:
The current (I) in a circuit is directly proportional to the voltage (E) and inversely proportional to the resistance (R)
b. Thermocouple: A junction of two dissimilar metals that produce voltage when heated
c. Frequency: Number of cycles of alternating current per second measured in Hz
Current which constantly changes in amplitude, and which reverses direction at regular intervals.
b. Direct current-
Flows only in one direction and that the number of electrons flowing past a point in a circuit in one second determines the amplitude of current.
3. State the output of the SH-60F/HH-60H a/c generator in reference to the following parameters.
Makes sure there is no shorts/breaks in the wire, from one end of the wire to the other end of the wire.
b. Voltage:
Checking for required voltage as specified.
Measures voltage, amperage, and resistance ohms also diode check.
b. Time Domain Reflectometer (TDR):
Identifies how far (in feet) if there is a short/break in the wire. The machine operates by sending a signal down the wire and reading where the break is and sending the signal back.
7. Briefly describe the Pitot Static system.
It consists of a Pitot-static tube and three indicators, all connected with tubing that carries air. The three indicators are the altimeter, the airspeed, and the rate-of-climb indicator. The airspeed indicator displays the speed of the aircraft. The altimeter displays the altitude of the aircraft. The rate-of-climb indicator shows how fast the aircraft is climbing or descending. Each instrument operates on air taken from outside the aircraft during flight.
8. State the difference between the barometric and radar altimeter.
The apparent change in frequency of a received signal caused by the relative motion between the sender and receiver.
10. Explain the operating characteristics of the Emergency Locator Transmitter (ELT).
AW1 Benjamin Kunz
kimberly.a.king@navy.mil
AZC(AW/NAC) Kimberly King