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What's the max groundspeed you did with a helicopter?

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What's the max groundspeed you did with a helicopter?

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Old 18th Aug 2006, 01:08
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My 210+/- kts by gps was in a Squirrel riding a Katabatic from 3000m plateau to near sea level down the Priestley Glacier (E166 S74) over a relatively short distance... very interesting being spat out at the bottom. It was just as well the aircraft didn't know how fast it was going, as it would have been "peaking" as well...
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Old 18th Aug 2006, 04:36
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168kts g/s on gps with 100 indicated in 212 in a shalmal( which is a big wind in the gulf)
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Old 18th Aug 2006, 04:42
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Originally Posted by Reefdog
168kts g/s on gps with 100 indicated in 212 in a shalmal( which is a big wind in the gulf)
NFI what G/S we used to get flogging around the Brent Field in 212's, Decca DANAC wasn't up to that sort of accuracy: but we did have ocassion to flog around in winds exceeding 70kts one day, simply because we were out of shut down limits, and it was convenient to keep the bus run going until the wind dropped . No doubt we would have been well over 170kt g/s at times, just as much as we were certainly down to about 30-40kts going back into wind
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Old 18th Aug 2006, 05:47
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I did 220 kts GS in a S76B. 145 kts IAS and 75 kts of tailwind.
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Old 18th Aug 2006, 08:10
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Another Lynx

Lynx Mk 7, with TOW booms. We managed a sustained 202kts (GSDI and 252)in the downwind leg (IMC) of the Radar pattern at EGUW, as you can imagine it took forever to get down once we had turned onto finals.
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Old 18th Aug 2006, 14:19
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I'm sure the 225 and (when it arrives in the SNS) the 155 boys will have some interesting figures by this winter's end. With 160 kts TAS easily achieveable straight and level, and 170-175 in a descent, it won't be long before a 70 kt tail wind takes someone over the 240 kt G/S mark

I once did Bristol to Benson in 16 minutes in a 155, which I thought was pretty neat!
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Old 18th Aug 2006, 21:29
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blimy,
so my 200 mph - on the skyforce gps - in a r22 is pretty extreme then.
(i remember changing the setting from knots to mph coz i wanted to see "200" on the display)
that was in a decent from 4,000ft, and i never exceeded vne (102kts)
the take off was very interesting, of course.
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Old 19th Aug 2006, 01:18
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Ive been beaten by a R22

But we might have to go to arbitration on this one, was it legal.

Does it not state in the flight manual of the R22 that one is not allowed to fly in wind of more than or winds forcast to exceed 15 kts (not sure of the exact number).
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Old 19th Aug 2006, 03:13
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Originally Posted by the coyote
213 knots, S76C in the cruise, Bass Strait, Oz. Other guys there have had 226 knots.
I beat you (not that it is a competition mind you!); according to the Trimble GPS 218 knots, same aircraft cruising straight and level. I didn't know someone had since beaten me! Was also hovering with 70 knots on the clock that day, 50+ ft waves well above the cellar deck to boot. Got 240 knots out of the 412 but they were adjusting the timining of the LORAN ground stations then so can't really claim that one!
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Old 21st Aug 2006, 10:12
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Ups, only 118 kts with my B47-G3B1 ...

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Old 21st Aug 2006, 10:41
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Wink

270K in an X-15...Mother Rucker..1984........ Then there was that trip in the Agusta Grand......................now thats fast.........nearly keeps up wth a Hawk......168 Vne straight & level. Just like every Hawk pilot has done....193KIAS Vne....................sucking all the power at a 15 degree pitch down att. from about 5000'..... Had only Doppler ref for GS, which is not very reliable at a transmitted angle other that the plain.
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Old 21st Aug 2006, 10:52
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Originally Posted by tomstheword
But we might have to go to arbitration on this one, was it legal.
Does it not state in the flight manual of the R22 that one is not allowed to fly in wind of more than or winds forcast to exceed 15 kts (not sure of the exact number).

No actually:

The only wind limitations in the R22 flight manual refer to pilots with less than 200 hours in helicopters and / or less than 50 hours in the R22. And even then, the 15kts you remember refers to the gust spread.

See the extract below from the AD 95-26-04 .

cl12pv2s

LIMITATIONS SECTION

The following limitations (1-3) are to be observed unless the pilot manipulating the controls has logged 200 or more flight hours in helicopters, at least 50 of which must be in the RHC Model R22 helicopter, and has completed the awareness training specified in Special Federal Aviation Regulation (SFAR) No. 73, issued February 27, 1995.
(1) Flight when surface winds exceed 25 knots, including gusts, is prohibited.
(2) Flight when surface wind gust spreads exceed 15 knots is prohibited.
(3) Continued flight in moderate, severe, or extreme turbulence is prohibited.

Adjust forward airspeed to between 60 knots indicated airspeed (KIAS) and 0.7 Vne, but no lower than 57 KIAS, upon inadvertently encountering moderate, severe, or extreme turbulence.

Note: Moderate turbulence is turbulence that causes: (1) changes in altitude or attitude; (2) variations in indicated airspeed; and (3) aircraft occupants to feel definite strains against seat belts.
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Old 21st Aug 2006, 11:08
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65Kts in a Chinook coming back from the Brent. Went to Sumburgh instead...
Don't recall the outbound speed, wind had picked up en route.

Once saw a Fiesler Storch (almost an honourary helicopter) appear tail-first over a hangar at about 100' and fly across the apron backwards at walking pace. Mind you, he wasn't trying to go forwards! It did look odd when he put the power on though.
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Old 21st Aug 2006, 11:11
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I was only taking the piss.

It must have been the 25 kts I was refering to but Im just filthy a R22 went 173 kts.
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Old 21st Aug 2006, 11:54
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I had been for a flight in a H500 (Vne 156 kt) and afterwards jumped into my four wheel drive with the wife. I had taken my hand held Garmin with me in the '500 and the wife was later playing with the GPS in the car. What's this 320 km/h max speed on the GPS? She asks. How? What have you been up to?

It still took her a little while to settle down after I explained it had been in the '500 and with a tail wind. A 320 km/h Nissan Patrol, I'd like to see that!
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Old 21st Aug 2006, 12:13
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28 April 2004
Myself and Capt. Pearce - SW Ontario at 2am in the morning.
S76A @ 234kt GS in a shallow decent at VNE.

That plus a couple of other notable efforts with Capt. Galapagos
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Old 21st Aug 2006, 20:49
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212kts, 500' agl, SK76A++, Maui, with about a 50kt+ tailwind.
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Old 21st Aug 2006, 22:58
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120 kts in a Scwheizer 300C.

It was an interesting ride
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Old 21st Aug 2006, 23:03
  #39 (permalink)  
 
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Originally Posted by CYHeli
I had taken my hand held Garmin with me in the '500 and the wife was later playing with the GPS in the car. What's this 320 km/h max speed on the GPS? She asks. How? What have you been up to?
A wife who knows how to work a GPS? I'd like to see that
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Old 21st Aug 2006, 23:10
  #40 (permalink)  
 
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200mph R22

Hey Biggles99 - When you clocked 200mph in the R22 was the aircraft pointing directly downwards at the ground at the time?
Was this speed encountered during a Michael Fish style unpredicted weather phenomenon?
My little R22 used to get overtaken by cars on the motorway most days.
Are you sure you weren't looking at kph?

SB
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