Lockheed XH-51A High Speed Jet Helicopter 240 MPH (210 Knots) 1965

[MrZhilvinas]

' Once was helicopter viewed as a slow and reliable workhorse... Well, no more!'

I bet this thing is unreliable :D

[Bravo21]

The new move in this direction is the Sikorsky X-2 helicopter, its a twin rotor design with a pusher prop for nigh speed maneuvers and can do 250kts...all fly by wire. Unlike the Lockheed XH-51A, the X-2 looks like something that will lead to a production model aircraft.

[fezzin1992]

jet helicopter.... Jellycopter

[hotrod4you2]

where all the gas go?

[Korvan1993]

It seems that the military videos from the old days where way cooler. Today you just got an uber excited announcer who tells you that THIS BULLETS SOMETHING IS OVAR 9000!!!!!!!!!!!!!!!!!!!!!!

[gaberth]

1965 Helicopter gets 272 mph... today a commercial Helicopter Maker is proud to create a 240 mph model ? come on... the same happens with cars AUDI got a 250 mph car in 1941

[grreeknick]

@gaberth Google, "retreating blade stall."

[krbosak]

Lynx is 201mph and doesnt carries jets.

Osprey is 282...351mph and carries lots of payload.

[CorrectiveAction]

@krbosak Osprey is hardly a helicopter...

[krbosak]

@CorrectiveAction What we see on the vid is not helicopter either. But Osprey is also a VTOL using blades, this is what sets the class. What is see on the vid is not helicopter eiter.

Wiki Gyrodyne, It's alll muddy terrain this classification. I would agree most on FAI designation, whatever it is.

[hillberg100]

The seating and certification,X-2 Two seats & a larger power plant-POS the XH-51 550 hp pratt & whitney and FOUR seats and a CERTIFIED product. Big differance.

[losttribe3001]

This just needs the Airwolf theme music..

[CrazyHeliDude]

@losttribe3001 - True. I'd be willing to bet dollars to donuts that this is where Bellisario got the primary concept for Airwolf.

[strassj]

Retractable Skid!!!!

[hillberg100]

seats 4 and that fast,The Sikorsky X-2 only seats 2.....

[MadMichigander1313]

The Lockheed XH-51 was the first helicopter to feature (read: introduce) 'Rigid Rotor' technology. It was a test bed for the canceled AH-56 Cheyanne. After Cheyanne was canceled, Lockheed tried to market the technology, but DOD and State Department labled it a classified. Since they couldn't sell either the H-51 or AH-56, Lockheed got out of the helicopter business, and the technology was given to United Technologies Sikorsky division as well as Hughes Helicopter.

[BrotherBloat]

what a rocket! :O

[AdamEtheredge]

Hooha! Kind of purty. But fat as a cow, though...