RHS Feedback - AFRF
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IDProjectCategoryView StatusDate SubmittedLast Update
0002943AFRF[All Projects] Generalpublic2017-01-20 20:272017-01-24 03:01
Reporterb00ce 
Assigned Toreyhard 
PrioritynoneSeveritytweakReproducibilityN/A
StatusnewResolutionopen 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Is it a wish/request?No
RHS version
Arma 3 version1.66
Did you used any other mod when the error occurred?No
Which mods?
Summary0002943: Mi-24 has too much power
DescriptionThe Mi24 has an empty weight of approximately 18,700 lbs and a fuel capacity of 486 Gallons which is roughly 3,300 lbs (6.8 lbs/gal with Jet-A) giving a takeoff weight of about 22,000 lbs with a full tank of gas. The maximum takeoff weight is 25,353 lbs; making the useful load 3,353 lbs, which would include the crew.

An HMMWV weighs approximately 5,000 lbs, and while being sling-loaded with the Mi24VT it feels as though the truck isn't there. Whereas with the UH60M has trouble even though the Blackhawk should have a considerably higher power margin (0000011:0000015,500 lbs with a full tank AND crew with a max takeoff of 23,500 with sling).

While the sling hook can carry the Humvee, the Hind would have a difficult time getting it airborne with the full bag of gas (Read impossible) that ArmA assumes it has.

Additionally, I challenge anyone to find a video of a combat-loaded Mi24 hovering out of ground effect.

Thanks for all of the hard work you guys do.
Steps To ReproduceUsing the standard FM:

Pilot Mi24VT
Sling-load any HMMWV variant

Then pilot an H60 and do the same to "feel" the comparison.
Additional Information
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Issue History
Date ModifiedUsernameFieldChange
2017-01-20 20:27b00ceNew Issue
2017-01-21 10:00reyhardNote Added: 0005765
2017-01-21 10:00reyhardAssigned To => reyhard
2017-01-21 10:00reyhardStatusnew => feedback
2017-01-21 10:27b00ceNote Added: 0005770
2017-01-21 10:27b00ceStatusfeedback => new
2017-01-21 13:31reyhardNote Added: 0005776
2017-01-21 19:20b00ceNote Added: 0005781
2017-01-22 10:15reyhardNote Added: 0005784
2017-01-24 03:01b00ceNote Added: 0005794

Notes
(0005765)
reyhard   
2017-01-21 10:00   
AFM or standard FM?
(0005770)
b00ce   
2017-01-21 10:27   
Using standard FM, keyboard & mouse. I can't stand the "advanced" flight model.
(0005776)
reyhard   
2017-01-21 13:31   
bodyFrictionCoef & liftForceCoef were changed to better represent max speed of Mi-24. thing is, lifForceCoef is responsible for lift force, so you get result like that. I couldn't find any other way to tweak it so unless you know someone who is willing to share some magic, it's going to stay this way unfortunately
(0005781)
b00ce   
2017-01-21 19:20   
Does the .p3d weight property of the aircraft effect performance with regard to the liftForceCoef?
(0005784)
reyhard   
2017-01-22 10:15   
not sure about this
(0005794)
b00ce   
2017-01-24 03:01   
Did some fiddling about in the editor using ropecreate. Managed to get a BMP3 in the air with the Hind.

http://i167.photobucket.com/albums/u125/booce/arma3%202017-01-23%2020-34-18-77.png [^]

"rope = ropeCreate [Heli, [0,2,-2],APC, [0,2.3,0], 10];
rope2 = ropeCreate [Heli, [0,2,-2],APC, [0,-2.3,0], 10];
rope3 = ropeCreate [Heli, [0,2,-2],APC, [2.3,0,0], 10];
rope4 = ropeCreate [Heli, [0,2,-2],APC, [-2.3,0,0], 10];"

I'd also like to point out that speeds in documentation are always based off of a "slick" configuration with minimal weight. Helicopters are a hell of a lot faster the lighter they are. A combat loaded hind cannot hit the 170 KIAS top speed, let alone the cruise speed of 140 KIAS. (A fully laden UH60 can NOT reach its listed cruise speed on wikipedia for instance) The VT model would be the only variant to get close, with its weapons removed.

I tried messing around with "setMass" via the console in the editor to see if it would help. Not recommended.