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Old 12-04-2007, 10:29 AM
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Halinski Mi-24D Hind

Hi,

Just bought this and was checking it out when I noticed something ... the fuselage is designed to be built skewed (i.e. leaning to the left when viewed from the front). I first thought I'd found a misprinted former, but there's several with the same 'lean', and the interior skin for the main compartment also reflects this, so its been designed in.

Is this true for the real thing? I thought that the Mi24 was based on the Mi-17 family, and I looked at my GPM Mi-17 and that is straight. Given the effort taken to design this into the model I am guessing it must be for real, but http://www.papermodelers.com/forum/i...milies/eek.gif

I suspect that it may be intended to allow aerodynamic compensation for the torque of the main rotor and unload the tail rotor a bit? Any other conclusions / facts?
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Last edited by Hondamax; 12-04-2007 at 10:57 AM.
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Old 12-04-2007, 10:39 AM
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I've had that kit for years and never noticed it!
I'll have to look at it when I get home.

What year is it? Mine is mid-late 90's I think.
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Old 12-04-2007, 10:56 AM
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If its printed on the cover, then mine is 1-2/96.

If you look at frames III and IV and part 1 (particularly the door opening in the end) you'll see what I mean.
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Old 12-04-2007, 02:50 PM
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I noticed that skew on the Mi-24 on a set of drawings I have. Can't figure it out, but think it does have something to do with the torque.

Definitely an interesting design.
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Old 12-04-2007, 03:14 PM
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I think it must be like they used to do on single engine propeller aircraft, offset the tail fin by a few degrees so that the airflow compensated for some of the torque effect.

I wonder if its based on the downwash from the rotor or on the airflow from forward movement?
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Old 12-04-2007, 03:36 PM
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Hey I found this in a quick search .... check out the fuselage sections. Just as keen-eye-Hondamax said. wow!


http://www.ofp.imro.pl/index.php?page=mi24
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Old 12-04-2007, 04:34 PM
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Ooooh! Nice diagrams .......
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Old 12-04-2007, 05:32 PM
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I hadn't ever seen that before, but it's brilliant. In the downwash of the rotor it will help to counteract torque. In forward flight it will have no effect on the total drag of the airframe, unlike a larger tail rotor. A larger tail rotor would not only increase drag, but require larger (ie heavier)components to handle the extra power.

The Soviets may have lagged in electronics, but they have always been cutting edge physicists and aerodynamicists.
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Old 12-05-2007, 08:24 AM
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Yeah Soviet aircraft are amazing indeed. I remember watching a documentary on soviet aircraft and in short experts said the difference between East and West aircraft is that Nato aircraft were dainty like fine tuned watches which require constant monitoring to work right and a whole deck crew to walk the runway to find and remove the tiniest foreign object. Soviet craft could pretty much belly land on soft ground, have a crew jack them up, rearm-refuel, put the gear down and send them off lol.

Just the sheer bruteness of the Hind makes it a favorite.
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Old 12-05-2007, 02:01 PM
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That's the drawing I have which got me wondering about the Hind. I have a special place in my heart for this helicopter as I flew in one in Honduras in the late 80s. I didn't notice the strangeness of its design then, as I was just thrilled to be near the thing.

It's interesting what the designer did to assist the flying characteristics of the aircraft. Definitely an interesting design.
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