SA341/342 Technical Discussions

[Miki]

The complete insight of Turbomeca Astazou III B engine:

[Zishelix]

Very interesting!

Welcome aboard Miki... dobrodosli na Aviaforu

[Miki]

Thank you mr.Zigshelix, hvala od srca.

[Miki]

SA-342 Gazelle: How to Fix Exhaust Temperature Problem

Initial symptom is the experience of temperature variation via the exhaust temperature indicator at ranges from 50° to 300°C during flight.

For everyone who knows this type of engine it should be steady at 450°C. The engine RPM is fixed at 43,500 which is excellent.

The solution is as follows:

• Check the RPM indicator. Done, it is accurate.
• Next is to check the resistance of the wires at thermocouple system. Found to be 18,03 Ohms. Fixed at variable resistor and adjusted it at strictly 16.02 ohms. The serial numbers of thermocouple senders indicated that value.

When I have approached the connector and disassemble it I have found that the pins are loose and their connection to the wires are bad.

Read more about this procedure here.

Brgds

Miki

[Miki]

Torquemeter

The torquemeter is an unique instrument.As the word say it measures the torque.
Torque between main rotor and engine.It is one of the most important instruments at this helicopter.
More about its testing you can read at :

Brgds

Miki

[Benjamin]

Whoa, that's awesome