SCAT Electronic News August 27 1999
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- Category: Archive 1999
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SCAT Electronic News August 27 1999
Tables of Contents
==================
[no] World Championship Results for Isreal
Contest Calendar - Markos
Builder of the model rule for FAI - Annis
Re: Bird Aerodynamics - Hermann A
World Championship Results for Isreal
-------------------------------------
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99/08/26
Hello from the Great White North, Canada that is. I am looking for
information about the results from the World Championships in Isreal. I
have a friend over there on the Canadian Team and his name is Jim
Brooks. He flies Wakefield, (I think). I have looked over your web
site and can't find any current information.
Please let me know when you will have the results and I will check back
later.
Thanks,
Drew Martin
[Drew
Read the Editorial and latest news section of the www.aeromodel.com/scat
web site. A few days back you will see address of the orgainzer's web
site .. I do not have any special inside knowledge. We just publish
what people send us. ]
Contest Calendar
----------------
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Roger,
The one contest left out of today's mailing was the Hoosier Cup, to be held
at Muncie with Mark Wood as the CD. The dates are Sept 11 and 12. I know,
because I am the contest coordinator for Distr VI. The AMA contest calendar
for that date shows only the CIA contest with AMA and nostagia events and
Phil Sullivan as CD. The Hoosier Cup sanction was sent in too late to make
it into the calendar.
Chuck
[Chuck is this an America's cup Event ? and who is the CD.
Note that we still have not got the Nats results - with all classes
[JSO combined as is needed for the America's Cup] and to correct Coupe results
- Mr Hines if you wish to further your efforts to get the results
and send them to us in fornat we can print it would be appreciated - and we
will even include the cat or HLG if you send that too!]
Builder of the model rule for FAI
=================================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
I think elimination of the builder of the model rule for FAI events has
greatly diminished the sport. A large part of the sport in the past was
designing, building, and trimming your own original design. I am really
surprised at how passive free-flighters are on this issue. At model meets of
the past you could identify various original model designs with the flier. At
the Nats this last summer, I saw numerous FAI models hanging in the museum of
historic FAI fliers of the past. Will models of the future hanging in the
museum, simply read manufactured by x and flown by y.
The current direction has been set and only time will tell how it will play
out in the future.
Jeff Annis
Former FAI Wakefield Flier
[ Jeff
There has been much discussion on this in the past.
Most active flyers think that the benefit of removing
the BOM rule has caused more people to participate
and this out weighs the disadvanatges.
Part of the reason for this is that there many factors
contributing to winning competitions and the
model is only one of those factors.
It is important to note however that most World Champions
do in fact fly their 'own' models .. hopefully we'll
see how that pans out this year in Israel !
]
Re: Bird Aerodynamics
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Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Roger,
Got caught 400 miles from my Hoerner books when the Bird Aero question
arose. Below is a nice reply from Richard Johnson, possibly the most famous
sailplaner, who gathered the data that appears in Hoerner.
Pg 7-22 and Fig 37 in the old FLUID-DYNAMIC DRAG has the following info re
Buzzards:
Soaring mode, feathers spread v=8.5 m/s Cl=1.3 Rn=140,000
Gliding mode, v=9to23 m/s Cd min=.009 Cd wetarea=.0034 Rn=200,000
L/D max=22 @ 13.8m/s Cl~.5
Span=1.44m
Aspect ratio=5.7
W=2.3kg
Area =.37sq meter
Of course SYMPO 88 had the Hans Gremmer article on tip feathers but how can
you top a calibrated sailplane following the birds.
H
>From: "jdsoar"
>To: "hermann andresen"
>Subject: Re: Bird Aerodynamics
>Date: Thu, 19 Aug 1999 08:55:24 -0500
>
>Hello Hermann,
> Thanks for your note. Dr. Bennett gives me much too much credit. I was
>the pilot of Dr. Raspets Kirby Kite light sailplane that we used for the
>comparison method of polar determination - via a radio link to the ground.
> I was a full time student, and I was not involved at all in the data
>after the flights. I had enough of a problem trying to understand calculus!
> Dr. Raspet's polar data was published in several places that he liked
>to
>submit to, but I do not know exactly where they were. Hoerner did summarize
>2 ploars in his Fluid Dynamic Drag book, and he was always including his
>references there.
> If that leads nowhere, press George Bennett to get someone to dig in
>the
>College's archives.
> Thermally (as Dr. Raspet used to say)
> Dick Johnson
>-----Original Message-----
>From: hermann andresen
>To: This email address is being protected from spambots. You need JavaScript enabled to view it.
>Date: Tuesday, August 17, 1999 5:54 PM
>Subject: Bird Aerodynamics
>
>
> >Mr Johnson,
> >
> >Never did I imagine some 50 yr ago when reading of your record flight in
>AIR
> >TRAILS, that I would someday be writing to you on a computer requesting
>data
> >on bird aerodynamics.
> >
> >I would appreciate any information you could provide in this regard.
> >
> >Thank you,
> > Hermann Andresen This email address is being protected from spambots. You need JavaScript enabled to view it.
> >
> >
.........................
Roger Morrell
