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Some Helicopters like Russian Mi-24, UH-60 etx have Stub Wings. What is the role of such wings?

Russian Mi-24

enter image description here

UH-60

enter image description here

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    $\begingroup$ for those two I'd guess providing hard-points for the weapons and winches attached to them. $\endgroup$ – ratchet freak Jun 23 '15 at 11:36
  • $\begingroup$ Can you possibly provide attribution for the images, e.g. the source? $\endgroup$ – SentryRaven Jun 25 '15 at 11:23
  • $\begingroup$ Source : Google Images $\endgroup$ – Damalani Singh Jun 25 '15 at 11:26
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In addition to serving as support for weapons, we must have in mind that they're both quite fast for a helicopter - 335 km/h (208 mph) for Mi and 294 km/h (183 mph) for UH. At such speeds, even small wings yield considerable aerodynamic effects, just like in planes. From Wikipedia article we can learn that Mi's wings can provide up to 25% of total lift at speed and important stability to counter tendency to Dutch Roll.

Curiously, both mentioned platforms exist in wingless configuration. For UH-60 it's quite common, while Mi-24 had it's wings removed for breaking records. This hints that Mi-24 is much more dependent on it's wings than UH-60.

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    $\begingroup$ Dutch Roll, for those unfamiliar with the term, is a "stable instability" that is common in heavier high-wing aircraft, including rotary wings. By adding aerodynamic wing stubs low on the fuselage, the imbalances that cause the roll are cancelled out. $\endgroup$ – KeithS Jul 8 '15 at 16:57
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They're used for hanging munitions, external stores, etc. on. You can see in the picture of the Mi-24 that it has several rocket pods attached. They're referred to as "hardpoints" or "pylons".

I'm guessing that the reasons the pylons hang down from horizontal wings, rather than being attached more directly to the helicopter include:

  • Compatibility with existing airplane-based systems.
  • Moves rocket exhaust away from the body of the helicopter.
  • There's not enough room under the helicopter to hang them there.
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  • $\begingroup$ Plus for quite some stuff you might want a way for visual inspection from within the cockpit. $\endgroup$ – PlasmaHH Jun 24 '15 at 8:59

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