HH-60J Jay Hawk
Comments
1 16 March 2015, 22:38
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I was wondering, the tips of the rotors does that cut down the chopping effect of the boom?
17 March 2015, 03:58
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Thank you everyone@Donald the blade tips quite the sound of the rotors. It took 4 months to build the Beast.
17 March 2015, 13:44
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I love models that leap off the plinth at you, and this one certainly is striking. 🙂
17 March 2015, 15:02
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I was told, don't know if it's true, that the popping sound of the rotors is the blades breaking the sound barrier, is that true? Thanks
17 March 2015, 15:59
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Yes, s correct. The blade tips go supersonic and the popping is actually mini sonic booms.
17 March 2015, 16:18
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Donald, The main rotor blade tips don't reach the speed of sound but the tail rotor blades do. What you are describing is called blade slap. The primary cause of that 'popping' noise is a rotor blade flying through the vortex of the blade before it. It's usually most prominent when the pilot is pulling a lot of power and descending. Basically, the rotor disk is flying in it's own dirty air. 🙂
17 March 2015, 20:26
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Thank you all. Kerry you are correct, I had a senior moment. I should be able to remember that stuff since I flew the Damn things.LOL. I remember we used to put our Huey's in a decent and pull power and make the blades pop at night when shooting practice approaches. Let the civillians know we were out there protecting them.
18 March 2015, 00:45
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Clifford, I am guilty of copying some information I found on Wikkipedia mate, but I also remember seeing something of the subject on a documentary about how the rotor blades are constructed, so if I sound like a know it all, I apologise mate. :-/
18 March 2015, 00:53
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Too bad they didn't know about the rotors tips in Vietnam would of been nice to see!
18 March 2015, 02:24
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Clifford, did it really matter if the NVA heard the chop? I hoped they did
18 March 2015, 02:31
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Thank you Mats and Ulf. @Donald, no it didn't really matter. The US troops loved hearing it, they knew the calavry was coming. LOL.
18 March 2015, 13:55
Album info
Finally finished The Skunk Works HH-60J Jayhawk in 1/48 scale.