Cozy - cvh

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WABez
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Re: #5080

Unread post by WABez » Fri Jul 25, 2008 12:11 pm

cvh wrote:Anyway, my climb test is scheduled for tomorrow, 10:00 to 12:00 Z, around Lichtenburg :)
Curios, let us know the results. :D Unfortunately I cannot join you (don't have enough balloons)... :twisted:
Building: Glasair Super II-S

The liver is evil, ... it must be punished!

"Ability is what you're capable of. Motivation determines what you do. Attitude determines how well you do it." Lou Holtz
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Re: Cozy - cvh

Unread post by Malcolm » Fri Jul 25, 2008 1:27 pm

Hi cvh,

Looking forward to your climb test results.

By the way, took your advice and flew the Varieze final approach as I would any other aircraft and you were spot on - no different other than a long float. This was probably because I was a little too fast.

Good luck with the test.

Regards,
Malcolm.
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#5083

Unread post by cvh » Fri Jul 25, 2008 7:51 pm

Just a note to thank all you beautiful people for the kind wishes!

Also for having carried me to this point, without all the advice I would probably not even have thought of attempting this exciting mission.

Weather in the RSA tomorrow see: http://www.weathersa.co.za/
from where you go: Aviation
from where you go: Aerosport
From where you go deeper down some: click on the Aerosport pages or you can click on "spotgraphs"
This shows a map of the RSA, you simply click on the dot nearest to where you want the information (my nearest is Mafikeng West of Jhb/Pta) and it gives winds aloft, temps at those altitudes & more info than you would normally care to shake a stick at.

This link was kindly provided to me by Peter How from Composite Technologies! Thanks Peter!

Peter was also kind enough to lend me his "clip-on" Oxygen Saturation measuring instrument ... and here I thought there were none available in the RSA.

So now, I'm totally kitted out!

And Jan Hanekom of SAPFA fame for the supply of the Tilt-Tech loggers for this trip, Thank you too!

:D

Next will be my report ... if I get 23500 I'll be happy, but the higher it gets the extatiker I'll be (pun intended)

The friendly people at ATNS - CAMU for their kind indulgence and not forgotten the NTCA people at SACAA for entertaining my test area :D

I'm sure someone is forgotten, but forgive me for that :D
RV
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Re: Cozy - cvh

Unread post by RV » Sat Jul 26, 2008 6:20 am

Enjoy Chris, I hope you accomplish you dreamed flight level. I imagine you will have a gps with you, wont you please note your ground speed up there, it promises to be phenomenal. Peter is a good man, I bought my aerox kit from him. I would have lent it to you but it is at the coast, unless you want to fetch it :twisted: :twisted: :twisted:
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#5086

Unread post by cvh » Sat Jul 26, 2008 6:00 pm

Hello Boys & Girls,

This is to report that Cozy #219, ZU-CZZ managed to attain 28197' during the
climb test today.

My Cozy is as standard as they come, fitted with an IO-360 Lycoming and a 70"
x 80" P-Prop (Local RSA).

It was still climbing at this altitude, about 100 fpm, but the temp outside
was -24,5C (amazingly, just as predicted by the weatherman) and the
alternator decided to call it a day ... the cold is what made me give up,
really!

The Jhb region was looking to clear me to 30000, and they took their time
over it, while waiting the cold got to me, so I cancelled further climbing
and got out pronto.

The whole even took 2:24 min and the total flight length ended up being
331Nm (FALI is 89 Nm from my base airport FASY.

Looks like Waiter's world record is safe - for awhile :) (30027')

For my efforts, I may have picked up the local record :-)

RV, at that altitude it indicates 80Kts speed, GPS shows 148 to 165 kts, depending on the wind direction.
The standard setting of 1013, is also waaayy of compared to the GPS altitude.

Will post some pictures later :-)
Chris Van Hoof - Architect - Johannesburg
ZU-CZZ / Cozy Mk IV / latest info on:
http://mysite.mweb.co.za/residents/cvh/index.htm
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Re: Cozy - cvh

Unread post by WABez » Sat Jul 26, 2008 6:15 pm

Very impressive and well done Cvh. =D> =D> =D> =D> =D>

Congratulations on the local record! =D> =D> =D>

Did the ski suit not work well enough to keep you warm? :twisted:
Building: Glasair Super II-S

The liver is evil, ... it must be punished!

"Ability is what you're capable of. Motivation determines what you do. Attitude determines how well you do it." Lou Holtz
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Re: Cozy - cvh

Unread post by Ray W » Sat Jul 26, 2008 10:22 pm

Oh well done Chris - hope you've thawed out by now. =D> =D> =D> =D> =D> =D>
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Re: Cozy - cvh

Unread post by RV » Sat Jul 26, 2008 11:41 pm

We have conclusion that Rutan is brilliant & that CVH is mad. What an achievement Chris. It is incredible to think you still managed 100fpm up there at 80 kts, there are not many aeries & people capable of that achievement.
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Re: Cozy - cvh

Unread post by Paintman » Sun Jul 27, 2008 8:27 am

Always knew you were a "high-flyer" but this gives new meaning to the phrase!! Congrats =D> , must have been awesome, I was going to say 'what a cool experience' but I guess this went beyond 'cool'. At that altitude you could fly direct to the Midlands without having to worry about the Berg so no excuses for not coming to visit!!
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#5084

Unread post by cvh » Sun Jul 27, 2008 10:14 pm

Thank you for your kind words :)

To answer some questions from various emails:

World Record:
the current World Record holder is Jim Price at 35027' in this class.

Clothing:
Long Johns, Ski Suit and two pair of socks, had another jersey at the ready.

Why:
In theory (this should really read "actually") we have to do a climb test in
each Amateur built plane to establish the actual service ceiling of the
plane. One can of course just fill in the form to conform with Lycoming's
idea of a service ceiling ... how can this Cozy Builder just do that, that
would be sort of inaccurate :-).

The flight was therefore by special (and ever so kind) permission of our
ATNS (Air Traffic Navigation Authority) thru CAMU (Central Air Management
Unit) under a clause called "Flexible use of Airspace". Under our countries
constitution all citizens have access to all facilities, you may have to
apply, motivate and even be denied ... :-)

How did it feel?
Except cold ...
the plane is amazingly stable at all times.
Yes, way up high, small inputs will make it roll easier, pitch slightly
easier - esp. forward.
The ASI shows 80 kts, but you are motoring at 140Kts+ see graph.
Winds at 28000 were 35kt @ 250, and it shows on the speeds on the logger.
When it was time to get out of there, it was time to see how close one could
get to that The Mach Tuck issue ... not that easy, nose forward definitely
increases the ASI to about 120 Kt, but by then you are pointing really down
and I was running into a 20 Kt wind, indicating 180 on the GPS, so real
outside speed was about 200 kt temp was about -15C at this point. For Mach
tuck you'd have to point way more down and could probably do without that
propeller disc at the back :-) Anyway, this is for others with way bigger
personal
equipment to test! My ears hurt like hell from this little exercise!!!

25800 saw the Alternator light come on, this was quite a relief to see this
work, since I had had no way of testing this before ... however, it was
obviously functioning properly when you glanced at the Amp meter. Quick
decision, this can't last that much longer anyway and we have spare handheld
radio if the battery dies. So, off with the blinking lights & other nice to
haves, the Control people are doing the separation anyway :-) keep the
transponder & radio, isolate everything else.

>From thereon it was rather uneventful to get to 28000+, the waiting for
approval got to me and having to change the aeroplane's set-up to straight &
level was a challenge. The Oxygen Saturation was OK at 87% but the heartbeat
was at 137, set the Oxygen supply to 35000' because it was cold and I was
starting to shake.

(The highest altitude recorded on my GPS is 28197')

So while they took their time to allow me higher, I had a change of heart
and decided to call it a day.

On the ground and out the plane at about 2:53 local, it still took me till
5:00 pm to warm up, the ear sorted itself out after a good nights sleep.

All told, yes, it was fun to do.
Would I do it again? Probably, if something changed on my plane that would
make the exercise worthwhile, like tuned exhaust pipes :-) Besides, my
mother raised a slow child
:-)

Numbers?
Empty 1195,7 lb / Gross 1666,0
fuel 154 liters (about 40 US gal)
Me: 209 Lb / Ballast 33 Lb / Oxygen & other stuff 40Lb
CG at take off 100,30 / CG at landing 100,00

Chris Van Hoof - Architect - Johannesburg
ZU-CZZ / Cozy Mk IV / latest info on:
http://mysite.mweb.co.za/residents/cvh/index.htm
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Re: Cozy - cvh

Unread post by Bearcat » Sun Jul 27, 2008 11:08 pm

Amazing flight Chris ..Well done =D> =D> =D>
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Re: Cozy - cvh

Unread post by Ugly Duckling » Mon Jul 28, 2008 7:58 am

Congratulations Chris & Jean, behind every successful man there is always a Great Lady.

What's next in the proving flight arena?
Paul Sabatier EAA Ch 575, SSSA, ERGC, ERFC, AeroClub
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#5087

Unread post by cvh » Mon Jul 28, 2008 8:49 am

Sadly, it is nearing the final stages ...

Maybe another propeller, 70" x 84" sounds like something to try ...

Thinking of a tuned exhaust, but there is so little space ...
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Re: Cozy - cvh

Unread post by Sideslip » Mon Jul 28, 2008 9:25 am

Incredible CVH!!

Well done. =D>
Mike Gill
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Re: Cozy - cvh

Unread post by Chris » Mon Jul 28, 2008 12:01 pm

:shock: :shock: :shock:

Waiting for that logger download so we can recognise the SA record =D> =D> =D>
Chris Booysen
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