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HelicopterMain Discussion › Fastest Full Scale Helicopters
12-31-2009 03:51 AM  7 years agoPost 21
jgunpilot

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Pollock, LA

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We had helmet controlled guns in Cobras in the late '70s. The Comanche was too conventional. The Army should have went with an XV-15 derivative and they'd have really had something.

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12-31-2009 03:57 AM  7 years agoPost 22
human213

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malibu

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The KA-50 flys faster than that sideways...

and the top speed is classified, but has been demoed at
over 353kmh at airshows.

michael

Not everything that can be counted counts, and not everything that counts can be counted.

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12-31-2009 04:53 AM  7 years agoPost 23
skytrekin

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Youngtown, AZ

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This makes me wonder what speeds RC helis are doing?

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12-31-2009 12:16 PM  7 years agoPost 24
Taipan

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Sydney, Australia

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The fastest RC heli to date is the Henseleit TDR at 233kph/ 144.8mph/ 126kts as seen in the vid below;

http://www.youtube.com/watch?v=8ZdtwSryG-c

Will full size helis ever break the Lynx world record? I know the main issue is tip speed going supersonic & becoming unstable as well as retreating blades beginning to stall.

But can't they go faster? What about co-axial to solve the above issues?

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12-31-2009 01:11 PM  7 years agoPost 25
hootowl

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Garnet Valley, Pa.

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Sideways flight requires major tail rotor. I'm sure there will be faster full scale helis but they may not be as conventional as we see now. There is one design being worked on by Boeing I believe that has a large aerodynamic disc... like a saucer with smaller blades that come out of the disc.

Wolves don't lose sleep over the opinions of sheep

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12-31-2009 01:21 PM  7 years agoPost 26
hootowl

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Garnet Valley, Pa.

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01-04-2010 02:30 PM  7 years agoPost 27
chris6414

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Sneads Ferry, NC USA

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V-22

363 mph. Cruising speed: 317 mph

Is a faster, conventional helo design needed? Another debate...

Century Hawk Sport, OS .32, Futaba 7C, GY-601 9251
Predator Gasser SE G-23, Fut 3010 servos, JR gyro/servo

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01-04-2010 02:32 PM  7 years agoPost 28
ShuRugal

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Killeen, TX

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osprey is a V/STOL plane, not a heli.

AMA 700159

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01-04-2010 02:38 PM  7 years agoPost 29
chris6414

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Sneads Ferry, NC USA

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Missed my point. Is it worth the R&D to develop a faster conventional helicopter when Tilt rotor technology gives you what you are looking for? Hover and land like a helicopter and fly as fast as a turbo prop A/C.

Century Hawk Sport, OS .32, Futaba 7C, GY-601 9251
Predator Gasser SE G-23, Fut 3010 servos, JR gyro/servo

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01-04-2010 02:48 PM  7 years agoPost 30
fla heli boy

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cape coral, florida

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Look up bwellmaker here on RR. He did a scratch commanche here that was unreal!!! He got it so accurate, why??? He was crew chief on the real thing when it was under development. Sad it went bye-bye. Cool bird.
I found out from him about the cancellation.

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01-04-2010 03:25 PM  7 years agoPost 31
nighttrain

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Louisville KY

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These speeds are mostly a moot point. They are 'True' airspeeds from extremely high altitudes where helos don't operate and no loads onboard. For operational planning, the speeds are much less. At high altitude the air is about 1/2 as thick, so your true airspeed is almost twice as fast as you are indicating on the airspeed indicator. It depends on many variables, but at 18,000 ft half of the atmosphere is below you. Granted these are great accomplishments for helis, but operationally they are pretty meaningless numbers.

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01-04-2010 07:19 PM  7 years agoPost 32
hootowl

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Garnet Valley, Pa.

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These speeds are mostly a moot point. They are 'True' airspeeds from extremely high altitudes where helos don't operate and no loads onboard. For operational planning, the speeds are much less. At high altitude the air is about 1/2 as thick, so your true airspeed is almost twice as fast as you are indicating on the airspeed indicator. It depends on many variables, but at 18,000 ft half of the atmosphere is below you. Granted these are great accomplishments for helis, but operationally they are pretty meaningless numbers.
I don't think that's true for the two original posted helis... the Lynx and the Boeing 360. They flew at conventional altitudes.

Wolves don't lose sleep over the opinions of sheep

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01-04-2010 10:11 PM  7 years agoPost 33
jgunpilot

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Pollock, LA

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Any record attempt would go with true airspeed, anyway.

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01-05-2010 10:51 PM  7 years agoPost 34
TachyonDriver

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Chipping, Lancs, UK

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Sideways flight requires major tail rotor
Unless you're a Ka-50 Hokum I love that single seat co-ax gunship. Sure, two pairs of eyes are better than one (Cobra and Apache), and the Cobra is as beautiful as the Apache is ugly, erm purposeful but the russian ship looks, well it just looks right to me.

Tach.

Little Spinning Bundle of Joy® DON'T DISS THE DINO!!

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01-06-2010 03:23 AM  7 years agoPost 35
Scott Anderson

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Enterprise, Al

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dont forget about this one Lockheed XH-51A 272 MPH !!

EDIT 300+ MPH !!

Watch at YouTube

Synergy R/C Helicopter Field Representative

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01-06-2010 03:36 AM  7 years agoPost 36
jgunpilot

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Pollock, LA

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And a 50 mile range!

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01-06-2010 04:29 AM  7 years agoPost 37
fran

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HONEA PATH, SOUTH CAROLINA

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I still think the Lynx has the official public record; however, there are faster secret ones

Count on it!

FRAN SR. ( FAI-F3C)

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01-06-2010 04:42 AM  7 years agoPost 38
Scott Anderson

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Enterprise, Al

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if sure there are some , i keep my eyes open for them

Synergy R/C Helicopter Field Representative

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01-29-2010 04:40 PM  7 years agoPost 39
Richard Morgan

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Virginia Beach, Virginia USA

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AH-56 Cheyenne was no slouch:

Performance: About MACH
Max Speed (published): 245mph (395kmh; 213kts)
Max Range: 629miles (1,013km)
Rate-of-Climb: 3,420ft/min (1,042m/min)

I found one other "unofficial speed of 276mph" for the final version of the Cheyenne.

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

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01-29-2010 04:48 PM  7 years agoPost 40
fla heli boy

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cape coral, florida

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looking good!!!

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