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#4523599 - 06/03/20 09:50 AM Engine startup bug? (1.16.1)  
Joined: Mar 2005
Posts: 1,124
Shadow=ASP= Offline
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Shadow=ASP=  Offline
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Joined: Mar 2005
Posts: 1,124
Norway
Hi everyone,

I've been away for som 8 years or so. Flew alot of LB2 and EECH back then.
Have just dusted off the old TM Warthog and Simpeds. Due to the multi-controller issue with the collective in LB2 I set up EECH 1.16.1 instead.
I notice one thing that bothers me.
Unless I engage the rotors first (R) I'm unable to start the left and right engines (CTRL-, & CTRL-.). Is it supposed to be like this?

I always thought the correct order would be:
1: APU on
2: Start left eng
3: Throttle up left eng to idle
4: Start right eng
5: Throttle right eng to idle
6: Increase throttle to take-off rpm
7: Engage rotors.
(or engage rotors between 5 and 6)

This is tested on the AH64D and RAH66 with clean 1.16.1 and 1.16.0 builds. As soon as the engine value is above 0 I can disengage the rotors again to keep it from spinning and continue the startup procedure untill I get to the point the other engine is supposed to start, then a quick hit on the R, start the engine and R again.
I dont recall having to do this in the build that was normal around 2012 (dont recall the versions back then). It was around the time when a guy called Arneh had just made the updated Apache with the new MFDs and engine controls.

Btw awesome to see this sim is still getting modding and coding love. Hats off to you guys copter

#4523638 - 06/03/20 03:50 PM Re: Engine startup bug? (1.16.1) [Re: Shadow=ASP=]  
Joined: Dec 2010
Posts: 1,883
messyhead Offline
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messyhead  Offline
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Joined: Dec 2010
Posts: 1,883
Yeah, you can't start the engines until you disable the rotor brake.

I think it's noted in the release notes either in 1.16.1 or 1.16.0, but it's never been changed

#4523641 - 06/03/20 04:00 PM Re: Engine startup bug? (1.16.1) [Re: Shadow=ASP=]  
Joined: Mar 2005
Posts: 1,124
Shadow=ASP= Offline
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Shadow=ASP=  Offline
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Joined: Mar 2005
Posts: 1,124
Norway
Ok. Thanks for clearing it up.

#4523652 - 06/03/20 05:01 PM Re: Engine startup bug? (1.16.1) [Re: Shadow=ASP=]  
Joined: Dec 2012
Posts: 1,382
thealx Offline
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thealx  Offline
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Joined: Dec 2012
Posts: 1,382
in the function "flight_dynamics_start_engine"

peace of code exists:
Code
// can only start one engine at a time, and not when rotor brake is active
if (current_flight_dynamics->rotor_brake || current_flight_dynamics->left_engine_starter_active || current_flight_dynamics->right_engine_starter_active)
	return;

means if rotor brake engaged, or one of the engines in ignition mode - Ctrl+. or Ctrl+, will not work. it was added by Arneh in 1 Nov 2008

it works different in 1.15.4 but cause another kind of problem, so not good enough yet to be in the stable release

#4523742 - 06/04/20 09:52 AM Re: Engine startup bug? (1.16.1) [Re: Shadow=ASP=]  
Joined: Mar 2005
Posts: 1,124
Shadow=ASP= Offline
Member
Shadow=ASP=  Offline
Member

Joined: Mar 2005
Posts: 1,124
Norway
So its still a rotor-brake and not a clutch?
But it works like a clutch if both engines are out and the rotor is still spinning?

#4523743 - 06/04/20 10:13 AM Re: Engine startup bug? (1.16.1) [Re: Shadow=ASP=]  
Joined: Dec 2012
Posts: 1,382
thealx Offline
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thealx  Offline
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Joined: Dec 2012
Posts: 1,382
it's both, actually. when you starting engines - it's a brake (starter blocker in fact). when you in the air and rotor is spinning - it's a clutch (after "rotor brake" hotkey press, autorotation can be used).
that's poor implementation for sure, especially that some helicopters have completely different rotor brake/clutch mechanics.


Moderated by  RacerGT 

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