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helicopter towing

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David Campbell

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Mar 13, 2003, 9:23:07 PM3/13/03
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Who knows when and where and by whom it has been done? Great airshow
act or silly? Any USA issues about "towing aircraft"?

Bruce Hoult

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Mar 13, 2003, 10:52:04 PM3/13/03
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In article <7885068c.03031...@posting.google.com>,
in...@milehighgliding.com (David Campbell) wrote:

> Who knows when and where and by whom it has been done? Great airshow
> act or silly? Any USA issues about "towing aircraft"?

It was done at the opening of the '95 World Champs in NZ. A Hughes 500
towed an ASW-20 by the belly hook. At a couple of thousand feet the
helicopter started to slow down until the glider stalled and hung upside
down under the chopper. The glider then released and did an aerobatic
routine. One of the pilots was Bruce Drake. I've forgotten who the
other was.

-- Bruce

David Russell

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Mar 14, 2003, 12:02:09 AM3/14/03
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"David Campbell" <in...@milehighgliding.com> wrote in message
news:7885068c.03031...@posting.google.com...

> Who knows when and where and by whom it has been done? Great airshow
> act or silly? Any USA issues about "towing aircraft"?

Let me know when you try this. I'll take a day off of work to watch!


BTIZ

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Mar 14, 2003, 12:05:44 AM3/14/03
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I think I'd want more than a couple thousand feet to be hanging upside down
perfectly stalled.. and then to do an acro routine.. we like acro routines
(normal aero tow) to start about 4000AGL.. gives a nice 12 to 15 minute
show..

I don't think CFR 61.69 specifies any thing for towing with.. other than
"Aircraft" and by definition.. that could be Airplane, glider, balloon, or
.....

TZ

"Bruce Hoult" <br...@hoult.org> wrote in message
news:bruce-2490F5....@copper.ipg.tsnz.net...

Bob Kuykendall

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Mar 14, 2003, 12:06:43 AM3/14/03
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Earlier, David Campbell wrote:

> Who knows when

1963

> and where

Argentina

> and by whom

Dick Schreder

Bob K.

David Russell

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Mar 14, 2003, 12:07:05 AM3/14/03
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"David Campbell" <in...@milehighgliding.com> wrote in message
news:7885068c.03031...@posting.google.com...
> Who knows when and where and by whom it has been done? Great airshow
> act or silly? Any USA issues about "towing aircraft"?

from http://www.silentwingsairshows.com/hires.html

ABOUT THE "OT-TOW"
Roger Buis in Otto the Airshow Helicopter, and Bob Carlton of Silent Wings
Airshows in his Salto sailplane, have made aviation history by performing
the first helicopter glider tow in the US. Roger begins the tow by hovering
in for the rope hookup. He then begins the tow facing sideways! After
reaching his maximum side traverse speed, he rotates the nose forward and
accelerates to climb speed. Bob and Roger will be performing the "Ot-Tow" at
selected airshows around the US and Canada this summer.

David Russell

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Mar 14, 2003, 12:14:13 AM3/14/03
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"David Campbell" <in...@milehighgliding.com> wrote in message
news:7885068c.03031...@posting.google.com...
> Who knows when and where and by whom it has been done? Great airshow
> act or silly? Any USA issues about "towing aircraft"?

Also see:

http://www.airshows.org/magazine/back-issues/2Q2002/Fly%20Bys.pdf

it speaks of practice done at a soaring site in alabama.
might be a good lead

dave r


Judy Ruprecht

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Mar 14, 2003, 12:48:05 AM3/14/03
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At 05:24 14 March 2003, David Russell wrote:
>
>'David Campbell' wrote in message
>news:7885068c.03031...@posting.google.com...
>> ... Any USA issues about 'towing aircraft'?

As others have pointed out, applicable US FARs refer
to towing 'aircraft,' leaving the option open. Still,
unless a waiver has been granted, one can but wonder
how your friendly local helicopter pilot would comply
with the experience and training requirements of US
FAR 61.59, which are incorporated by reference in 91.309.

And in the 'for what it's worth' category, the late
Ralph Barnaby's January, 1930 drop from a dirigible
proved that a glider could be used to tender a crewmember
to the ground in order to moor the - er - mother ship.
Don't know whether being 'dropped' constitutes being
'towed,' but in any event, Barnaby's flight took place
before there was an FAR Part 61 or for that matter
an FAA. (According to the history chapter Barnaby and
Vic Saudek wrote as part of The American Soaring Handbook
series, FAA's predecessor, the 'Civil Aviation Authority,'
didn't start exerting control over gliders until about
1932.)

Judy


Bruce Hoult

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Mar 14, 2003, 1:01:20 AM3/14/03
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In article <Iqdca.4628$yr5...@news2.west.cox.net>,
"BTIZ" <bnosp...@lvcm.delete.com> wrote:

> I think I'd want more than a couple thousand feet to be hanging upside down
> perfectly stalled.. and then to do an acro routine.. we like acro routines
> (normal aero tow) to start about 4000AGL.. gives a nice 12 to 15 minute
> show..

I don't know the exact height, but the glider aerobatics was no more
than a couple of minutes.

I heard that in a practice flight the glider stayed on longer than the
helicopter pilot expected and he radioed to see what was going on.
Seems the glider pilot was having trouble reaching the release. And the
chopper was losing height...

The owner of the helicopter (who I seem to recall was actually flying
the glider in the airshow) also offered to make himself available to do
a helicopter aerotow for anyone for whom the expense was a better option
than possibly having to wait for a trailer retrieve that would last into
the next day. Helicopters have far better initial acceleration than a
Pawnee (they shift a *lot* of air), and they can hover over anything
(water...) to take up slack, so he figured that if a flat spot was big
enough to land a glider in it would always be big enough to helicopter
aerotow out of as well...

-- Bruce

Adam Zieba

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Mar 14, 2003, 1:06:04 AM3/14/03
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In late summer 1964 during na airshow in Swidnik, Poland,
I witnessed a helicopter SM-1 towing three gliders Mucha 100.

ta...@lpthe.jussieu.fr

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Mar 14, 2003, 4:06:06 AM3/14/03
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Judy Ruprecht <jl_ru...@hotmail.com> wrote:

: At 05:24 14 March 2003, David Russell wrote:
:>
:>'David Campbell' wrote in message
:>news:7885068c.03031...@posting.google.com...
:>> ... Any USA issues about 'towing aircraft'?

: As others have pointed out, applicable US FARs refer
: to towing 'aircraft,' leaving the option open. Still,
: unless a waiver has been granted, one can but wonder
: how your friendly local helicopter pilot would comply
: with the experience and training requirements of US
: FAR 61.59, which are incorporated by reference in 91.309.

I remember once in Montpellier (France) a glider crashed on
the Pic St Loup (many years ago). They had the bright idea to
rescue it with an helicopter. Result one of the wing got into
the rotor of the helicopter and the helicopter crashed also.
Fortunately there were no casualties.


--

Michel TALON

Marc Ramsey

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Mar 14, 2003, 4:37:07 AM3/14/03
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<ta...@lpthe.jussieu.fr> wrote...

> I remember once in Montpellier (France) a glider crashed on
> the Pic St Loup (many years ago). They had the bright idea to
> rescue it with an helicopter. Result one of the wing got into
> the rotor of the helicopter and the helicopter crashed also.
> Fortunately there were no casualties.

Some pictures of a helicopter retrieve from two weeks ago:

http://williamssoaring.com/stories_main.htm

Most of the pictures are of a practice lift, before the actual
retrieve took place. Note use of long cables...

Marc


Markus Feyerabend

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Mar 14, 2003, 5:12:02 AM3/14/03
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Hi,>I think I'd want more than a couple thousand feet to

>be hanging upside down>perfectly stalled.. and then to do an acro routine..
>we like acro routines>(normal aero tow) to start about 4000AGL.. gives a
>nice 12 to 15 minute>show..You don“t really want to tell us that you do 12 to
15 minutes acro from 4000ft/AGL, would you?!We start at 4000ft/AGL and end 4 minutes later in 700ft/AGL,
that“s roughly 800ft/min!!!Regards,Markus

Ian Strachan

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Mar 14, 2003, 5:12:37 AM3/14/03
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>David Campbell wrote:

In addition to those also described on this thread:

>> Who knows when

9 August 1958

>> and where

Lee-on-Solent Naval Air Station, UK
(during a public air show)

>> and by whom

Humphry Dimock

Glider: Slingsby T-21

Tow pilot: John Sproule

Towplane: Whirlwind helicopter (Westland-built S-55)

Dimock and Sproule were both Lieutenant Commanders in the Royal Navy.

John Sproule, amongst other things, I think flew 37 hours on the ridge
at Dunstable in 1938 for a UK two-seat duration record.

I remember Humphry Dimock winning a day in a UK Nationals. He was seen
by all of the rest of us to be flying very fast between what were rather
weak thermals. When we asked him why, it appeared that he had his
electric vario on a 2:1 setting (included for increased sensitivity) and
thought that the thermals were twice as strong as they really were!

In the S&G article, Dimock also notes that Peter Scott (an ex UK
National Champion and ex-Chairman of the BGA) had earlier seen a
helicopter two in Poland where the glider was "dangled on the tow rope"
before releasing.

Source: Sailplane and Gliding, October 1958 edition page 285

--
Ian Strachan


Mike B

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Mar 15, 2003, 3:26:03 AM3/15/03
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Very interested to hear of this, though I know I wouldn't want to be
given the bill for a helicopter aerotow!!

Mike

On 13 Mar 2003 18:23:07 -0800, in...@milehighgliding.com (David

Pete Smith

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Mar 14, 2003, 8:12:45 AM3/14/03
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We use a Super Cub and a Supermonk now, but the T21
still flies, although it is rarey towed, usually winched
- maybe we scared it!.

BTIZ

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Mar 14, 2003, 11:19:12 AM3/14/03
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Mark.. come to the air show at Jean NV (20nm South of Las Vegas) the last
weekend in April.. we'll time it together.. ohh... you have a .de account...

glider used is an SZD-59A

TIZ

"Markus Feyerabend" <REMOVE_TO_RE...@web.de> wrote in message
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BTIZ

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Mar 14, 2003, 11:20:57 AM3/14/03
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Marc.. what ever happened to the pictures of the Schwizer glider that was
retrieved off a "dry" or not so dry lake in northern NV a few years ago.

TIZ

"Marc Ramsey" <ma...@ranlog.com> wrote in message
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Greg Arnold

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Mar 14, 2003, 12:15:07 PM3/14/03
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Any idea what that retrieve cost?

"Marc Ramsey" <ma...@ranlog.com> wrote in message
news:7phca.808$JI7...@newssvr19.news.prodigy.com...

> Some pictures of a helicopter retrieve from two weeks ago:

Marc Ramsey

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Mar 14, 2003, 12:31:02 PM3/14/03
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"Greg Arnold" <Soa...@REMOVEcox.net> wrote:
> Any idea what that retrieve cost?

The owner of the helicopter refused to accept payment,
it's a pretty close-knit community out there in Williams...

BTIZ

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Mar 14, 2003, 12:45:43 PM3/14/03
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"Marc Ramsey" <ma...@ranlog.com> wrote in message
news:qloca.2008$_H1...@newssvr19.news.prodigy.com...

> "Greg Arnold" <Soa...@REMOVEcox.net> wrote:
> > Any idea what that retrieve cost?
>
> The owner of the helicopter refused to accept payment,
> it's a pretty close-knit community out there in Williams...
>
>

Williams is a Great place... great people.. and I'm sure the helo owner will
use the pictures to show (advertise) the capability or service of his
machine..

Marc.. say hi to Noelle and Rex for me..

TZ
www.lvvsa.org


Simon Carr

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Mar 14, 2003, 5:24:09 PM3/14/03
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Ian Strachan wrote

> In the S&G article, Dimock also notes that Peter Scott (an ex UK
> National Champion and ex-Chairman of the BGA) had earlier seen a
> helicopter two in Poland where the glider was "dangled on the tow rope"
> before releasing.
>
> Source: Sailplane and Gliding, October 1958 edition page 285

That was probably Alan Yates.

Simon Carr


BTIZ

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Mar 14, 2003, 6:17:40 PM3/14/03
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another thought... perhaps a test if the helicopter can lift the dead weight
of the glider..

as in the case of the retrieve from a muddy field at Williams Ca

a previous thread mentioned the helicopter was starting to descend with the
glider still attached...

as the Tow, is underway.. the helo only needs to tug.. the pulling weight of
the glider.. it is making it's own lift.. but as the helo slows to "suspend"
the glider for the air show acro routine, as the glider gently stalls and
swings inverted below the helo, now the helo must support the entire weight,
600-800# for a single seat? or more?

I'd want to be sure I had an emergency release available, and that the CG
hook would not inadvertently back release under pressure..

TZ

"David Campbell" <in...@milehighgliding.com> wrote in message
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bambuko

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Mar 21, 2003, 3:25:59 PM3/21/03
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> Who knows when and where and by whom it has been done? Great airshow
> act or silly? Any USA issues about "towing aircraft"?

you can see some photos of Bocian being aerotowed by helicopter during
1958 World Championship in Leszno on:

http://www.gorpol.krakow.pl/lotnictwo/szybowce/bw01/szyb03.html

rgrds Chris

Janusz Kesik

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Mar 22, 2003, 3:01:07 PM3/22/03
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In 1995 at Czestochowa, there was a Pirat towed by a Mi-2 heli.
The show included also hanging the glider under the hovering helicopter.

Janusz.


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