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DCS Huey Performance Planning

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DCS Huey Performance Planning

Post by (A/229) Brizzly on Thu 5 Mar 2015 - 12:18

Hey guys,

I got the link to your sight from over at ED's forums.  I had asked a question there about Huey performance being off in the game compared to the 1988 US Army -10 I have on my iPad with C19.

I was wondering what you guys use for performance planning in DCS.  I'm wanting to create some planning products for some of the missions, but I'm beginning to wonder if the performance can be adequately calculated.  I'm a helicopter pilot IRL currently, and love the fidelity of DCS's Huey, but I'm just wanting to take the Sim to a new level, besides just hopping in, firing it up, and flying.

Thanks in advance.


Last edited by heloguy on Fri 6 Mar 2015 - 0:25; edited 1 time in total
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Re: DCS Huey Performance Planning

Post by (HHC/229) Strut on Thu 5 Mar 2015 - 12:35

When performance planning is talked about in our flying, we mostly go to the "Pam" you have.
As for if it applies to the dcs model you are probably right in that its a bit off and may or may not reflect the real choppers performance levels. But as in all things DCS that claim near enough simulation you can use it as the authority as to how performace is affected and the various tables  and as a starting point.


Last edited by (C/229) Strut on Thu 5 Mar 2015 - 12:38; edited 1 time in total

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Re: DCS Huey Performance Planning

Post by (HHC/229) GunfighterSIX on Thu 5 Mar 2015 - 12:37

I used the 1988 -10 performance charts to create the ATM planing cards, some cards were closer than others at matching the DCS Huey with the real aircraft. As Belsimtek works on the Huey systems again I will readdress the cards. Some things on the cards we use serve no purpose due to the lack of LTE and DCM.

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Re: DCS Huey Performance Planning

Post by (HHC/229) Strut on Thu 5 Mar 2015 - 13:25

Heres a couple of pics from Vietnam







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Re: DCS Huey Performance Planning

Post by (A/229) Brizzly on Thu 5 Mar 2015 - 18:14

Thanks for the replies, and nice pics Strut. Yeah, it seems close in some areas, but off worse in others. Cruise flight torque seemed to be way off. Do you guys use a flat burn rate for planning, or does DCS actually have a burn rate change according to power setting?
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Re: DCS Huey Performance Planning

Post by (HHC/229) GunfighterSIX on Fri 6 Mar 2015 - 1:38

The performance card I made for 1500 feet was almost spot on for all the torq settings.  The one at sea level did not ling up as much.  Your burn rate will change based on your power setting.  So you calculate it based on your planed speed.  In the Huey 90 knots works great for most things.  80 knots if you have gunships with you.  As you know once airborne you start and maintain fuel checks.  Once again the predicted fuel burn was very close at 1500 feet, not so much at other altitudes.  So I based the fuel burn data on actual in game burn rates. The 1500ft card I used chart data for the predected, the sea level one I had to modify.    
Here is some of the cards I worked on last year.  https://www.dropbox.com/s/golvk8p479n6hkd/ppc.rar?dl=0
Once I get a few more cards finished for the MI8 I am going to come back and look at the Huey again.

When you do a 5 ft hover check you will find that the Trq used to hover at 5ft is the same trq used for a 90 knot cruse.

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Re: DCS Huey Performance Planning

Post by (A/229) Brizzly on Fri 6 Mar 2015 - 1:51

Thanks for those Gunfighter. I was thinking about knocking out a couple of these today, but I think I'll do some testing off of these myself.

The aircraft I was testing was about 1500lbs lighter than in your PPC, so I may give the heavier A/C a try. I know it's just a sim, and will probably be off some, but in my test the cruise torque was off by 8 psi, which I thought was a little excessive (16% of MTA). Hover tq at 5 ft was about half that.

I'll mess around with it some more.
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