Gazelle SA 341 main gearbox description

Main gearbox is the crucial connection between Astazou engine, frame, the main rotor and tail rotor.This work of tech ingenious art is carrier of the hydro pack as well.There is a RPM sender inside it and you can see rotor rpm-s at the inside scale of tachometer at the instrumental board .At the side of main gearbox is also place for low oil pressure sender.Everything is here at this video.

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Gazelle Turbomeca Astazou III B engine complete insight

The complete insight of Turbomeca Astazou III B engine

Gazelle SA-341 SA-342 workshop

Gazelle SA-342 in the process of manufacturing to be as good as new

The process of overhauling is at the stage where SA-342 gets new paint after the old one is removed completely.The new wiring is placed.That all guarantees long and safe flight hours.

Avionics for Airplanes and Helicopters general

Avionics in general means all electronic,electric and instrumental equipment that are placed into the airplane or helicopter.Thus it consists from many branches.The first one will be the instruments.
Instruments at the airplane or the helicopter are used for measuring and controlling various parameters during the ignition of the engine and during the flight.We can divide them into following groups.
Barometric instrumentsFlight speed indicator,Altitude indicator,Variometer.All of them are powered by air pressure static or dynamic component or both of them.
Instruments for controlling the parameters of the engineEngine RPM indicator,Main rotor RPM indicator,various temperature controllers for working temperature of components. Exhaust temperature controller everything is combined with such a fine automatics and is very reliable indeed.Shaft controllers, torquemeter they are all obliged to give a correct data to the flying crew.
Navigation instrumentsFlight compass,Gyrocompass,Gyro horizon …

Gazelle SA341/342,Avionics instruments,radio-radar and electro equipment for helicopters

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