500 km Triangle at 306 km/hr in Argentina

JS wrote:

306 km/hr = 190 mph = 165 knots

That is an amazing feat!


Yes, it is.
Anyone trying to beat that record should be certain their parachute is
in good shape, as the number of wings will likely total zero.
Jim

I am sending Klaus the $0.50 in the Berle trophy!!

(Sorry...a private Tehachapi Soaring joke)

Paul
ZZ

"Charles Crosby" wrote in message
...
Greg Arnold wrote:

When you are cruising at 20,000' to 30,000', doesn't the effect of
altitude cause IAS to be substantially less than ground speed?

That is indeed true. However, there are aeroelastic concerns (such as
flutter) which may result in a lower indicated vne at high altitude.

Charles



http://home.comcast.net/~johan.larso...ride-home.html

The Long Ride Home
Harold Peterson


This article originally appeared in the August 1, 1966 issue of Sports
Illustrated. David Stevenson provided the issue of SI for scanning.


' "We're plagued with people who want to emphasize the danger," George said.
"Just flying a sailplane around is safer than power flying. One fundamental
safety factor is the soft landing. You have marvelous control-anywhere
between a 40 degree approach with full dive breaks to 3 degrees with none.
In contest or record flight, of course, you're definitely stretching a
little. On a glide you may easily reach 150 mph where the placard speed is
listed at 86." Placard speed is that beyond which the manufacturer makes no
guarantee that things will not start coming off. '

[Quoting George Moffat. G.T.]


--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.

Has this flight been posted anywhere? I did not find it on OLC.

Tim

On Dec 22, 7:57 pm, "Paul Remde" wrote:
"Today, Dec 22nd 2006 at 1:00 AM UTC, Klaus Ohlmann called me on the phone
just after landing to let me know he have made a 500 Km flight at 306 km/h
on average in a Nimbus 4DM... this could be the first above 300 km/h and for
far, the fastest glider flight made under FAI rules."

So I was poking around on OLC and found a number his flights. On Dec
22, he did fly, but it was a 1000 km triangle attempt that he
abandoned. Was the flight on a nother day? I found his other two
claimed flights as reported by the FAI below.

Congratulations!

FAI has received the following Class D (Gliders) record claims :

================================================== ==================

Claim number : 14380

Sub-class DO (Open Class Gliders)
General Category

Type of record : Speed over a triangular course of 100 km
Course/location : Zapala (Argentina)

Performance : 289.7 km/h
Pilot : Klaus OHLMANN (Germany)

Crew : FECHINO Esteban (Argentine)
Glider : Schempp-Hirth Nimbus 4 DM

Date: 18.12.2006
Current record : 249.09 km/h (01.12.2003 - Horacio MIRANDA, Argentina)

================================================== ==================

Claim number : 14381

Sub-class DO (Open Class Gliders)
General Category

Type of record : Speed over an out-and-return course of 500 km
Course/location : Zapala (Argentina)

Performance : 275.8 km/h
Pilot : Klaus OHLMANN (Germany)

Crew : JANSEN David (Australia)
Glider : Schempp-Hirth Nimbus 4 DM

Date: 16.12.2006
Current record : 247.49 km/h (03.03.1999 - James M. PAYNE, USA)

================================================== ==================
-Tom

To average 306 he certainly exceeded that speed for much of the flight.
I too would like to understand the mods and the risk analysis for this
flight.

"Marc Ramsey" wrote in message
m...
Soarin Again wrote:
At 05:42 23 December 2006, Js wrote:
306 km/hr = 190 mph = 165 knots

That is an amazing feat!

Yes, it is.
Anyone trying to beat that record should be certain
their parachute is
in good shape, as the number of wings will likely total
zero.
Jim

Does anyone know if his Nimbus 4DM has had special
modifications to increase the vne at altitude, or does
he just not care about operating limitations?

306 km/hr true airspeed is 200 to 220 km/hr IAS at the 20000+ foot
altitudes used for these wave flights. Some gliders do require a
reduction in Vne at higher altitudes, but it isn't necessarily the case
that the limitation was exceeded.

Marc

On Fri, 29 Dec 2006 08:18:52 -0600, "SAM 303a"
brentDAHTsullivanATgmailDAHTcom wrote:

To average 306 he certainly exceeded that speed for much of the flight.
I too would like to understand the mods and the risk analysis for this
flight.

Klaus if flying a company-modified Nimbus 4 DM which allows a Vne of
260 km/h IAS at 6.000 meters.

260 kp/h IAS at 6.000m = 350 kp/h TAS.





Bye
Andreas

Cool.
He probably bumped that limit a few times too, but I suppose that's what
limits and record-setting flights are all about.

"Andreas Maurer" wrote in message
...
On Fri, 29 Dec 2006 08:18:52 -0600, "SAM 303a"
brentDAHTsullivanATgmailDAHTcom wrote:

To average 306 he certainly exceeded that speed for much of the flight.
I too would like to understand the mods and the risk analysis for this
flight.

Klaus if flying a company-modified Nimbus 4 DM which allows a Vne of
260 km/h IAS at 6.000 meters.

260 kp/h IAS at 6.000m = 350 kp/h TAS.





Bye
Andreas

Andreas Maurer schreef:

On Fri, 29 Dec 2006 08:18:52 -0600, "SAM 303a"
brentDAHTsullivanATgmailDAHTcom wrote:

To average 306 he certainly exceeded that speed for much of the flight.
I too would like to understand the mods and the risk analysis for this
flight.

Klaus if flying a company-modified Nimbus 4 DM which allows a Vne of
260 km/h IAS at 6.000 meters.

260 kp/h IAS at 6.000m = 350 kp/h TAS.





Bye
Andreas

Can you explain which mods have been done? Shortened wingtips and
strengthened tail boom?

On 30 Dec 2006 07:53:43 -0800, "J. Nieuwenhuize"
wrote:

Can you explain which mods have been done? Shortened wingtips and
strengthened tail boom?

No idea - I'm pretty sure an email to Shempp Hirth will clear matters.

Probably simply stiffer wings/wing flaps.




Bye
Andreas

On Fri, 29 Dec 2006 16:16:52 -0600, "SAM 303a"
brentDAHTsullivanATgmailDAHTcom wrote:

Cool.
He probably bumped that limit a few times too,

Bold statement.
Do you have *any* proof at all...?


Bye
Andreas