Decent Rate - Collective Down
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RCFlyer
- Posts: 12
- Joined: Mon Sep 05, 2016 6:32 pm
Decent Rate - Collective Down
The decent rate with the collective full down and attitude level is very slow. I get, at most, 1000 fpm. This is in the UH-1H version. This rate seems very low. I would expect the helo to decend very quickly in this configuration. This configuration is basically an auto-rotation.
Anyone seeing this?
Danny
Anyone seeing this?
Danny
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Dutch
- Posts: 101
- Joined: Sat Dec 14, 2013 5:32 pm
Re: Decent Rate - Collective Down
I just tried this, in P3D v4, and I get 2000-2500 FPM at a forward speed of 80KT (which shouldn't matter much but it keeps me out of VRS!)
Is it possible that your settings aren't really getting you to max down collective?
Dutch
Is it possible that your settings aren't really getting you to max down collective?
Dutch
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RCFlyer
- Posts: 12
- Joined: Mon Sep 05, 2016 6:32 pm
Re: Decent Rate - Collective Down
I did check and the collective down is full down. Please try full collective down from about 200 ft with an airspeed of about 5 knots. I am not concerned with VRS at the point, just want to know if the decent rate is going to be realistic. With close to 0 airspeed and full collective down the heli should fall out of the sky.
Danny
Danny
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Dutch
- Posts: 101
- Joined: Sat Dec 14, 2013 5:32 pm
Re: Decent Rate - Collective Down
Hi Danny,
I took the UH-1H up to 200 feet in a hover and dropped the collective all the way down.
In about 4 seconds I hit the ground at 3500 FPM and accelerating.
I'm not at all sure why you are seeing that floating behavior. Try an auto-rotation and see how that goes. If the Huey turns into a glider for you, it will give me a clue.
Editorially, I'll say that the FSX/P3D flight model for rotary wings throws down serious challenges for any designer trying to make it fairly realistic. Out of the box, it's more like a game and it's not possible to simply tweak the numbers to get it right. We came up with some creative cheats (like any FSX helo that, say, auto-rotates realistically) and those cheats are implemented in the UH1_SYSTEM gauge outside the normal flight model. It sounds like in your case the "cheat" code might not functioning. If it auto-rotates with a realistic rate of descent of around 1000 FPM or not, we will know. Without our code working behind the scenes, it will fly like a glider with no engine power - like almost any FSX helo (try the defaults.)
Dutch
I took the UH-1H up to 200 feet in a hover and dropped the collective all the way down.
In about 4 seconds I hit the ground at 3500 FPM and accelerating.
I'm not at all sure why you are seeing that floating behavior. Try an auto-rotation and see how that goes. If the Huey turns into a glider for you, it will give me a clue.
Editorially, I'll say that the FSX/P3D flight model for rotary wings throws down serious challenges for any designer trying to make it fairly realistic. Out of the box, it's more like a game and it's not possible to simply tweak the numbers to get it right. We came up with some creative cheats (like any FSX helo that, say, auto-rotates realistically) and those cheats are implemented in the UH1_SYSTEM gauge outside the normal flight model. It sounds like in your case the "cheat" code might not functioning. If it auto-rotates with a realistic rate of descent of around 1000 FPM or not, we will know. Without our code working behind the scenes, it will fly like a glider with no engine power - like almost any FSX helo (try the defaults.)
Dutch
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RCFlyer
- Posts: 12
- Joined: Mon Sep 05, 2016 6:32 pm
Re: Decent Rate - Collective Down
WIll give it a try today and let you know.
Danny
Danny