Ah yes ...
A Kaman K-Max ... (You'd think 'Max' would be fading away as an aircraft name .... :supergrin: )
They can be remotely piloted ..... (which would be MY choice ... :supergrin: ) ..... uttahere:
Ah yes ...
I did some research into this for Fairchild Hiller ... We had a gizmo called the reverse velocity rotor that swapped angle of attack on the retreating blade so that it provided lift from the windstream that was out running the retreating blade ... if you thought the blade in the video was busy, you should have seen this thing in action ... :wow:... But at least airplane pilots don't have to worry about retreating blade stall, like helo pilots do (I fly both).
Well, now we know why helicopter parts are so expensive ... :wow:I used to watch guys load aluminum into the 1,000 ton Cyril Bath stretch press in Grumman's Plant 3 stretch area to form rotor blades for Sikorski helicopters, similar to the machine pictured below. Standing in the pit below the machine and looking up at it's arms held horizontal by hydraulics - was quite humbling. Each huge multi-hinged arm all covered in grippers, metal hydraulic lines and flexible hoses reminded me somewhat of the exterior surfaces of a Galactic Empire Star Destoyer from the Star Wars saga. Its h-u-g-e center hydraulic piston (I believe it was 24" or better in diameter) was said to reach down 60' below the pit floor...'amazing machinery.
Probably closeThat seems like only 259-275 rpm. Is that right?
They’re weights. Usually we just call them the balls.For you helicopter guys, what are those two flappy things. They looked connected. Some sort of counterweight?
I did some research into this for Fairchild Hiller ... We had a gizmo called the reverse velocity rotor that swapped angle of attack on the retreating blade so that it provided lift from the windstream that was out running the retreating blade ... if you thought the blade in the video was busy, you should have seen this thing in action ... :wow:
Yeah .. it shook itself apart. :upeyes:
That's why the only fast helicopters you're gonna see will have coaxial counter-rotating blades.
That the one with the sign: "Approach from the front" .. (Or become chopped sushi) ... :supergrin:
250 .. pretty respectable for conventional layout ..The Lynx would beg to differ.
250 .. pretty respectable for conventional layout ..
But not pushing 300 ...
View attachment 837018
Eurocopter X3 – 293 mph; 473 km/h; 255 knots
The Eurocopter X3 tops the list as the world's fastest helicopter to-date, narrowly beating the Sikorsky X2's unofficial record on 7 June, 2013. The experimental high speed helicopter was designed by Eurocopter (now Airbus Helicopters).
I guess I had interpreted it differently. I figured that was what everyone was yelling after the rotor come off and you were flinging towards earth like a bar dart.It's called a Jesus nut because it takes an act of God to get it off. If He is otherwise occupied a Power-Dyn will work
I was doing a test of the transmission mounting lugs in the FH-1100.
View attachment 836990
Two hefty lugs hold the transmission in the helicopter ... (Or as I prefer to look at it, hold the rest of the helicopter way up in the middle of the air) ... :wow:
We had a problem with stress corrosion causing cracking, and of course, cracks in the lugs holding up your helicopter are ... baaaad ! .. :supergrin:
I was running test rigs to try out a number of solutions ...
Seems I had to take a trip on the company helicopter, (important parts or somesuch) :wow:
I mentioned the status of my 'Jesus lug' work to the company helo pilot ...
He said "Hell, he wasn't worried" ... If they crack, the copter starts shaking first, so you have some warning" .... :alex: