Question on how things work - blades don't spin when turbine first starts up?

[Volator]

So from my understanding the helicopter was made to be started at the idle stop. They have you start it just on the other side of idle because the idle stop release is electricly actuated, so if you lost electricity you wouldn't be able to shut off fuel and you'd burn up the engine. And I'm pretty sure I've done lazy starts in dcs with the throttle sitting on the idle release so that shouldn't be the problem.

 

That's interesting to learn. Being worried about hotstarts, I always cut out the throttle completely, bring up N1 to 10% with the starter and then roll in some throttle. Once N1 picks up speed, I roll to idle and let the engine continue to spool up with the starter going up to 40%. It looks like I don't have to worry that much.

 

[Jester986]

That's more like a LongRanger start. On the starter ~12% roll on throttle until light off, then modulate tot with the throttle to keep it in the yellow arc. I think its off the starter at 60-65% but its been a minute since I flew one. I know its supposed to be self sustaining at 55%

[Volator]

That's more like a LongRanger start.

Yes, I've used this startup procedure coming from the Dodosim B206 :smilewink:

 

 

[Jester986]

Jet ranger start is a little different from the long ranger. Instead of slowly modulating the start to maintain tot you just snap it to idle and then hold the idle release down incase you need to cut it. Bell decided to go to a modulated start for the long ranger thinking that a human keeping it on the higher end of the temperature range would be easier on the engine because it results in a faster start. What they ended up with was a lot more hot starts than the jetranger had because people are stupid.