Free Flight, Free Speech

that would make for a really slow start up... how long would you say from pressing the start button to 100% rotor speed ?

Could you do us a favour and watch this video of a real start-up (unedited) and explain what's happening at what time up to take-off

https://youtu.be/NRd-yMT_5NE

cheers

Simon

not a problem

So are the two needles on the RPM gauge always together after 10% N1 ?

I'm assuming the RPM engine is N1 and not N2

And is the rotor rpm's the actual rotor rpm's or N2 ?

And whilst I'm on.... The rpm gauge, rotor and engine rpm... My thoughts on this are that the engine cranks up, the engine needle moves slowly to 60% at which point the engine starts. Rpm's above 60% start to engage the rotor clutch and as such the rotor rpm's start to increase. The turbine now has ...

I have another question.... It's to do with turbine power output and the rotor blade pitch and how the 'collective' works. A) In my mind I have raising the collective adjusts the rotor blade pitch directly.. doing so the power needed to maintain rotor (and by direct connection) the turbine running a...

ok I see the problem.

The turbine has low inertia, you start it and run it up. At a certain rpm the clutch slowly engages spinning the rotors. The rotors have high inertia and acts as a 'flywheel' on the turbine. This steadies the rpm fluctuation on the turbine with sudden increased load.

Wrestling with the turbine rpm's at the moment...

Question.... the rotor clutch, does it disengage at over speed ?

I don't understand the people that criticise my methods, saying your flight model doesn't do this that or the other.... They never say, unlike this flight model which does. I asked do other flight models do that..... and it goes deathly quiet. I remember Alan telling everyone how I couldn't model bi...

In the flight control system file within the 'Flight' channel If you change the code to this <scheduled_gain> <input>T4T/one</input> <table> <independentVar>fcs/collective-cmd-pos</independentVar> <tableData> -0.6 -5.3 0.6 6.2 </tableData> </table> <output>propulsion/engine[0]/blade-angle</output> <...

I know you do...

There is no P gain... It's a lot more complex than that, I'm going to have to rewrite the turbine controls

4- a. You said the turbine model is ok. Yes, the rpm stay still. But when you collective up very fast, rpm will drop dramatically at a moment. b. RPM oscillates around %1 all the time. I understand English is not your first language and at first I didn't understand what you were after here... I've ...