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Helicopter Engine/Rotor Relation

conver

conver

Messages
36
Country
yugoslavia
Hello everybody!

How to create relation between HeloTurbineEngine and Rotor to behave like:
1. When Engine RPM (A:TURB ENG N2:1, percent) is lower then 65%, Main Rotor RPM (A:ROTOR RPM PCT:1, percent) is 0%.
2. When Engine RPM cross over 65%, Main Rotor RPM groves.
3. When Engine RPM is 100%, Main Rotor RPM is 100%


I guess that solves the .air file, but where? and how ?
Thank you!
 
You need to specify which sim you are talking about and which basic model.
Also what type of helicopter has those characteristics?
Roy
 
Hi Roy!
I'm using FSX and generic .air file from Bell 206.
I'm developing Gazelle SA342 helicopter wich has option to start engine to idle without rotor start. When engine RPM cross over 65%, rotor slowly starts to rotate (clutch).
 
There are three helicopter models. The "legacy" Bell 206, the Robinson R22 and the EH101.
With FSX you are limited to the first two. AFAIK EH101 needs FSX Acceleration or later.

There is very little you can do with the 206, although there are a lot of third party versions that are a sort of hybrid helo-turboprop. It has no clutch.

The Robinson has a clutch and the engine is started, run up and then the rotor drive is engaged by a clutch. However the Robinson only works with a piston engine model/airfile.

So you can not easily get the Gazelle engine characteristics. The Aztour is a single shaft turbojet so a clutch is required.
Most helicopters use a two shaft turboshaft where the N2 shaft is a free turbine. This means that it is not physically connected to N1 and a rotor brake is used in conjunction with reduced N1 gas generation to delay rotor rotation after start.
The rotor is physically connected to N2. This scheme is used in the EH101 model.

You will have to use something like Simconnect to prevent N2 rotation until the"clutch" is activated and N2 is allowed to rotate.

There are no sections in the air file that would allow you to do what you want.
Roy
 
Well, there is no rotor brake for turboshaft helicopters...
Rotor brake works only with pistion engine helicopters. But, never mind. I have found solution for this problem! If someone is interested, I'll share it with you!
 
Yes, please.

I'm not into helicopters, but other developers certainly are. So your solution could be useful to them.
 
Milos, I have a working rotorbrake in my MultyEngineTurbine. I am unsure if the MET can be used with a single engine but see no reason why it shouldn't. :)

What solution have you found then?
 
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