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waltmurphy(at)charter.net
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 Posted: Sat Jul 22, 2006 7:20 pm Post subject: Acro in a CJ |
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A friend who instructs in T-34's and T-6's is willing to trade a little
acro instruction ( my airplane ) for some A&P time on his airplane.
The question I have is could someone give me normal entry speeds for
loops , rolls etc, only interested in pretty mild maneuvers just
positive G entry level stuff.
Any input would be most appreciated, thanks ,
Walt
Oh.. almost forgot.... how much oil should I limit the engine to ( to
keep the airplane from getting really messy? )
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fougapilot(at)hotmail.com
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| Posted: Sun Jul 23, 2006 4:50 am Post subject: Acro in a CJ |
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Walt,
This is based on personal experience only.
The CJ can roll from cruise speed. I have rolled mine at speeds as low as
115kts. Doesn't do the sharpest looking roll, but rolls nice non the less.
130kts does excellent rolls.
When I first started loops, I was told (this is generic) that one should
enter a loop at 2.5 X Vs, which in our case is just happens to be Va
(152kts). Now I have been known to loop it at slower speed (135-140kts) but
it makes for a smaller loop. Looping at higher airspeeds will produce a
larger loop. With 175kts, I end up gaining 1500ft when at the top (I have an
M14p). Even got 1800ft once or twice with a Vne entry. One must be careful
with entry speeds in excess of Va to not pull too hard and overstress this
beautiful flying machine. Normally, my loop are around 3.5Gs.
I haven't noticed a big oil spillage on my CJ when doing acro as long as I
remain positive. Whenever I go negative (inverted for a few seconds or four
point roll) then it starts to spit some of that black oil. Since you want to
remain on the + side of things, I wouldn't worry much about the oil. I would
just keep at your normal level.
Hope this helps,
Dan
| Quote: | From: Walt Murphy <waltmurphy(at)charter.net>
Reply-To: yak-list(at)matronics.com
To: yak-list(at)matronics.com
Subject: Acro in a CJ
Date: Sat, 22 Jul 2006 20:17:32 -0700
A friend who instructs in T-34's and T-6's is willing to trade a little
acro instruction ( my airplane ) for some A&P time on his airplane.
The question I have is could someone give me normal entry speeds for loops
, rolls etc, only interested in pretty mild maneuvers just positive G entry
level stuff.
Any input would be most appreciated, thanks ,
Walt
Oh.. almost forgot.... how much oil should I limit the engine to ( to keep
the airplane from getting really messy? )
http://www.matronics.com/Navigator?Yak-List
http://wiki.matronics.com
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jland(at)popeandland.com
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| Posted: Mon Jul 24, 2006 6:51 am Post subject: Acro in a CJ |
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I use 120 for rolls, 160 for loops (mph)
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richard.goode(at)russiana
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| Posted: Mon Jul 24, 2006 6:51 am Post subject: Acro in a CJ |
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In response to Walt Murphy's message - am I alone in thinking that it is extraordinary to seek aerobatic instruction from someone who has no experience of that type of aircraft?
I know nothing about CJs, but a Yak-52 customer of ours to whom we had introduced a very experienced 52 aerobatic instructor, chose, for good practical reasons at the time, to get instruction from a superb pilot, BUT with, it now seems, no experience on the 52.
They decided to practice flat spins and spun-in.
No aircraft problem - simply no experience on type!
Richard Goode
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Herefordshire
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Mob: +44 (0) 7768 610389
Fax: +44 (0) 1544 340129
www.russianaeros.com
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jnygard(at)cisco.com
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| Posted: Mon Jul 24, 2006 7:47 am Post subject: Acro in a CJ |
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spun in, as in into the ground?
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Richard Goode
Sent: Monday, July 24, 2006 10:48 AM
To: YAK USA LIST
Subject: Acro in a CJ
In response to Walt Murphy's message - am I alone in thinking that it is extraordinary to seek aerobatic instruction from someone who has no experience of that type of aircraft?
I know nothing about CJs, but a Yak-52 customer of ours to whom we had introduced a very experienced 52 aerobatic instructor, chose, for good practical reasons at the time, to get instruction from a superb pilot, BUT with, it now seems, no experience on the 52.
They decided to practice flat spins and spun-in.
No aircraft problem - simply no experience on type!
Richard Goode
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Herefordshire
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Mob: +44 (0) 7768 610389
Fax: +44 (0) 1544 340129
www.russianaeros.com
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pa3arw(at)euronet.nl
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| Posted: Mon Jul 24, 2006 7:56 am Post subject: Acro in a CJ |
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Guys,
I still remember the day that that happened, lousy weather, low cloud base and they started a flat spin way too low….not very smart….
I agree with Richard, if you wanna do aerobatics with full power verticals, get a guy who has a lot of experience on type….
The case where Richard refers to was(!) somebody with NO experience at all on the Yak52.
Hans
Dutch Yak Dude
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pa3arw(at)euronet.nl
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| Posted: Mon Jul 24, 2006 7:57 am Post subject: Acro in a CJ |
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Yes, they were both killed at impact.
Hans
Dutch Yak Dude
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richard.goode(at)russiana
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| Posted: Mon Jul 24, 2006 8:27 am Post subject: Acro in a CJ |
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Yes, both killed. A completely unnecessary tragedy.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
[quote] ---
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