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McFly
Joined: 21 May 2012
Posts: 101
Location: Scottsdale, AZ
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 Posted: Sun Jan 12, 2014 10:56 am Post subject: Yak 52 maneuver speed |
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The phrase I found in the Yak 52 manual is "Maximum airspeed at maximum g -
360 kmph (194 KIAS). This does not appear to be Va but a restriction to the
maximum airspeed while pulling 7 g's.
Alternatively I found the phrase "airspeed range in normal flight 130 - 300
kmph (70 - 162 KIAS)". This appears to be similar to our "green arc" but
that is just my guess.
Interestingly I also found "minimum speed for level flight 130 kmph (70
KIAS)" while stall speed is listed as 110 kmph / 59 KIAS (upright), 140
7kmph / 76 KIAS (inverted), and 100 kmph / 54 KIAS (flaps extended). I don't
understand the difference between "minimum level flight speed" and "stall
speed". It's quite a large delta. Perhaps there is some sort of safety
buffer there for the DOOSAF students but that is just my guess.
I would think Va (as I understand it) is around 291 kmph / 157 KIAS.
Todd McCutchan
Fast Aircraft
T-34A & Yak-50
Cell - 260.402.1740
Email: todd(at)fastaircraft.com
Skype: tmccutchan
Web: www.fastaircraft.com & www.toddmccutchanairshows.com
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_________________
Todd McCutchan
Fast Aircraft
T-34A - N134FA
KDVT Hangar 33-13
Cell - 260.402.1740
Email: todd@fastaircraft.com
Skype: tmccutchan
Web: www.fastaircraft.com & www.flyams.com |
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wlannon(at)shaw.ca
Guest
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| Posted: Sun Jan 12, 2014 11:07 am Post subject: Yak 52 maneuver speed |
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Very interesting and informative discussion, many thanks to all
participants. No time to read all the info this morning but saving for
later.
I have, for many years, made it a habit to limit rolling / turning maneuvers
with both the Harvard and CJ to Va or less at not over 0.6 X the limit load
factor or < 4 G's for both types. Can't remember where that info came from
for sure but possibly from an old RAF POH for the Harvard Mk2.
Look forward to reading all of the postings.
Cheers;
Walt
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McFly
Joined: 21 May 2012
Posts: 101
Location: Scottsdale, AZ
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| Posted: Sun Jan 12, 2014 11:51 am Post subject: Yak 52 maneuver speed |
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"Rolling g" or "asymmetric loading" is often limited to 2/3 of normal g and
is a good practice for any type unless the POH calls for a different
adjustment.
Todd McCutchan
Fast Aircraft
T-34A & Yak-50
Cell - 260.402.1740
Email: todd(at)fastaircraft.com
Skype: tmccutchan
Web: www.fastaircraft.com & www.toddmccutchanairshows.com
--
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
|
_________________
Todd McCutchan
Fast Aircraft
T-34A - N134FA
KDVT Hangar 33-13
Cell - 260.402.1740
Email: todd@fastaircraft.com
Skype: tmccutchan
Web: www.fastaircraft.com & www.flyams.com |
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