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Forum: Tech Log
22nd Nov 2012, 15:07
Replies: 71
Views: 35,790
Posted By Hueyman

Ok.. and so the loop starts again.. If flat...

Ok.. and so the loop starts again..

If flat pitch is reachable, what's happening in final approach.

I'll try to investigate with Pilatus. Unfortunately, I can't be satisfied with the single...
Forum: Tech Log
22nd Nov 2012, 14:47
Replies: 71
Views: 35,790
Posted By Hueyman

Ok.. So, YES or NOT, the flat pitch is used...

Ok..

So, YES or NOT, the flat pitch is used ON THE particular PC-6.. ?

Maybe should I ask to Pilatus directly, or some repair/mechanic shop what is really happening or what ?

If you guys...
Forum: Tech Log
21st Nov 2012, 20:36
Replies: 71
Views: 35,790
Posted By Hueyman

Okay dude ;-) So your lasts statements explain it...

Okay dude ;-) So your lasts statements explain it ALL !

Thanks

Not Microsoft Flight Sim... someone is already doing one for it. Mine is for X-Plane ( Pilatus PC-6.. A bit of history, and...
Forum: Tech Log
21st Nov 2012, 20:03
Replies: 71
Views: 35,790
Posted By Hueyman

Ok thanks Aerobat.. so , in a dive, the blades...

Ok thanks Aerobat.. so , in a dive, the blades are never coming near flat pitch.. but keep it's low pitch stop 9°30' until Np goes higher than 2200 RPM for example ( assuming prop lever is firewalled...
Forum: Tech Log
21st Nov 2012, 18:34
Replies: 71
Views: 35,790
Posted By Hueyman

mmm.. Okay... I see So, all is suddenly...

mmm.. Okay... I see

So, all is suddenly clearer, taking your Cheyenne example.

But, ( yes sorry, I'm a but man.. ) why,when taxiing, the prop is making such a distinctive sound when you want to...
Forum: Tech Log
21st Nov 2012, 16:45
Replies: 71
Views: 35,790
Posted By Hueyman

Mate.. " I think you need to lift the power...

Mate.. " I think you need to lift the power levers as if you were selecting reverse in ground. It cannot be done in flight by just retarding to idle "

This is exactly what is crazy about that,...
Forum: Tech Log
18th Nov 2012, 11:19
Replies: 71
Views: 35,790
Posted By Hueyman

I know i know i know.. But nothing about low...

I know i know i know..

But nothing about low pitch stops removals..

Maybe the clue is in the " High or Low Idle "

At High Idle, the Cond. Lever position that should be selected during...
Forum: Tech Log
17th Nov 2012, 14:24
Replies: 71
Views: 35,790
Posted By Hueyman

Hello Aerobat77, Thanks for answering, ...

Hello Aerobat77,

Thanks for answering,

No, I think the guy you mean is Marcel, another guy who is also interested in PT6A operating principle, but for another simulator ( but same purpose )......
Forum: Tech Log
17th Nov 2012, 04:41
Replies: 71
Views: 35,790
Posted By Hueyman

Now, the question is : What kind of system,...

Now, the question is :

What kind of system, and how it happens :

That the flight idle pitch stops ( so +9,30° blade pitch ) are removed to allow blades to rests on ground low pitch stops (...
Forum: Tech Log
8th Nov 2012, 12:21
Replies: 71
Views: 35,790
Posted By Hueyman

Ok so, it becomes more and more clear. For...

Ok so, it becomes more and more clear.

For example, in my simulator, I set everything like that :

The prop angles varies from 86.1 ° ( Fully feathered ) to -11 ° reverse.

Now, when I start...
Forum: Tech Log
15th Oct 2012, 19:23
Replies: 71
Views: 35,790
Posted By Hueyman

Man, thanks but all that is the basic of Constant...

Man, thanks but all that is the basic of Constant Speed prop operation

I understand very well that below the governed range, when the blades are resting against the Flight Idle stops, the Power...
Forum: Tech Log
14th Oct 2012, 19:04
Replies: 71
Views: 35,790
Posted By Hueyman

This is in contradiction to what the PC-6 pilot I...

This is in contradiction to what the PC-6 pilot I had the chance to ask told me..

If some french people see this, I post the original message :

Sur le plan de l'emploi de la Beta, je...
Forum: Tech Log
14th Oct 2012, 18:00
Replies: 71
Views: 35,790
Posted By Hueyman

Ok guys, But the PT6A Free turbines and the...

Ok guys,

But the PT6A Free turbines and the Fixed shaft Garett ones didn't use the same mechanism/principle I guess.

If I want to truly understand how it works, it's to reproduce it in a...
Forum: Tech Log
14th Oct 2012, 08:09
Replies: 71
Views: 35,790
Posted By Hueyman

Mmm Ok I slowly start to get it. On the...

Mmm Ok I slowly start to get it.

On the PC-6, the low pitch stop is 9°30', so it's still producing forward thrust.

So, when entering into Bęta, the power lever becomes a correlation of blade...
Forum: Tech Log
13th Oct 2012, 06:20
Replies: 71
Views: 35,790
Posted By Hueyman

Ok now, another interrogation : If Bęta...

Ok now,

another interrogation :

If Bęta is the range where the power lever directly acts on the prop speed.. ok, so:

When you're applying your power on brake before take off, the prop lever...
Forum: Tech Log
12th Oct 2012, 19:34
Replies: 71
Views: 35,790
Posted By Hueyman

Hey thanks Escape Path ! But a point you...

Hey thanks Escape Path !

But a point you didn't lighten up was.. the brake effect in flight.

If it's not an angle, what makes a turboprop plane able to make dive descent ( - 5500 Ft/min without...
Forum: Tech Log
1st Oct 2012, 06:33
Replies: 71
Views: 35,790
Posted By Hueyman

Hello guys, I asked personally to a friend,...

Hello guys,

I asked personally to a friend, who is CPL in a PC-6, and was ATR42 PiC before.

He told me, you obtain it ( on the PC-6, not generally spoken ) by pulling the Power Lever all the...
Forum: Tech Log
29th Sep 2012, 19:35
Replies: 71
Views: 35,790
Posted By Hueyman

Mm ok.. !! In the PC-6, the power lever...

Mm ok.. !!

In the PC-6, the power lever require to be lifted to pass over the idle gate ( to enter into reverse ).

So, there is two ranges, ALPHA is all the range the FCU, CSU etc are managing...
Forum: Tech Log
29th Sep 2012, 09:44
Replies: 71
Views: 35,790
Posted By Hueyman

Ok, In the case of a Pilatus PC-6 B2H2,...

Ok,

In the case of a Pilatus PC-6 B2H2, powered by a P&WC PT6A-34, driving the all aluminium, fully featherable, and reversible four bladed Hartzell HC-D4N-3P Propeller...

There are three...
Showing results 1 to 19 of 19


 
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