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dlm46007(at)cox.net
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 Posted: Sun Jun 15, 2008 2:42 pm Post subject: pre stall buffet |
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As I have worked the approach speeds lower, I believe I am getting pre stall buffeting. During the test period my approaches were at 80 kts and half flaps and 75 kts over the numbers in the flare. I did not notice a vibration in the tail and/or flaps on the left side. Recently I have gone to half flaps and 70 kts on short final and into the flare. I feel a slight vibration in the controls prior to touchdown. Since I have been flying it was imprudent to turn my head to look at the left rear of the aircraft. Anyone else have a similar experience? I plan to get my flying partner to land tthe airplane while I observe the rear of the aircraft.
[quote][b]
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Kellym
Joined: 10 Jan 2006
Posts: 1706
Location: Sun Lakes AZ
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| Posted: Sun Jun 15, 2008 2:51 pm Post subject: pre stall buffet |
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What stall speed did you derive in your flight testing with full flaps,
at gross? I see Van's claims 57mph.
How about straight ahead stall speed coordinated with half flaps?
David McNeill wrote:
| Quote: | As I have worked the approach speeds lower, I believe I am getting pre
stall buffeting. During the test period my approaches were at 80 kts
and half flaps and 75 kts over the numbers in the flare. I did not
notice a vibration in the tail and/or flaps on the left side. Recently
I have gone to half flaps and 70 kts on short final and into the
flare. I feel a slight vibration in the controls prior to touchdown.
Since I have been flying it was imprudent to turn my head to look at
the left rear of the aircraft. Anyone else have a similar experience?
I plan to get my flying partner to land tthe airplane while I observe
the rear of the aircraft.
*
*
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Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
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coop85(at)cableone.net
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| Posted: Sun Jun 15, 2008 3:23 pm Post subject: pre stall buffet |
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You may want to do some more stall testing at altitude to see what it’s really doing. Being in ground effect should really change any buffet sensations in my opinion. FWIW I don’t get any buffet at any flap configuration prior to the stall horn which comes on just prior to the stall.
Marcus
Do not archive
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of David McNeill
Sent: Sunday, June 15, 2008 5:39 PM
To: rv10-list(at)matronics.com
Subject: pre stall buffet
As I have worked the approach speeds lower, I believe I am getting pre stall buffeting. During the test period my approaches were at 80 kts and half flaps and 75 kts over the numbers in the flare. I did not notice a vibration in the tail and/or flaps on the left side. Recently I have gone to half flaps and 70 kts on short final and into the flare. I feel a slight vibration in the controls prior to touchdown. Since I have been flying it was imprudent to turn my head to look at the left rear of the aircraft. Anyone else have a similar experience? I plan to get my flying partner to land tthe airplane while I observe the rear of the aircraft.
| Quote: | | http://www.matronics.com/Navigator?RV10-List |
0123456789
[quote][b]
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Tim Olson
Joined: 25 Jan 2007
Posts: 2881
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| Posted: Sun Jun 15, 2008 4:35 pm Post subject: pre stall buffet |
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Same here....and approaches at 70kts and up are definitely comfortable.
Lower than 70kts and it sinks fast, but you can approach without
buffet at less than 70kts.
Tim Olson - RV-10 N104CD - Flying
do not archive
Marcus Cooper wrote:
| Quote: | You may want to do some more stall testing at altitude to see what it’s
really doing. Being in ground effect should really change any buffet
sensations in my opinion. FWIW I don’t get any buffet at any flap
configuration prior to the stall horn which comes on just prior to the
stall.
Marcus
Do not archive
*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *David McNeill
*Sent:* Sunday, June 15, 2008 5:39 PM
*To:* rv10-list(at)matronics.com
*Subject:* pre stall buffet
As I have worked the approach speeds lower, I believe I am getting pre
stall buffeting. During the test period my approaches were at 80 kts and
half flaps and 75 kts over the numbers in the flare. I did not notice a
vibration in the tail and/or flaps on the left side. Recently I have
gone to half flaps and 70 kts on short final and into the flare. I feel
a slight vibration in the controls prior to touchdown. Since I have been
flying it was imprudent to turn my head to look at the left rear of the
aircraft. Anyone else have a similar experience? I plan to get my flying
partner to land tthe airplane while I observe the rear of the aircraft.
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Dave(at)AirCraftersLLC.co
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| Posted: Sun Jun 15, 2008 8:42 pm Post subject: pre stall buffet |
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Last week we recalibrated our AOA which required stalls clean and dirty. At 2400 lbs, 3000' DA , clean was at 62 KIAS, Dirty was 54KIAS. Approaching at 70 with the flaps down shouldn't be anywhere close to a stall, but Marcus is right, you should do some more testing at altitude.
Dave Saylor
AirCrafters LLC
140 Aviation Way
Watsonville, CA
831-722-9141
831-750-0284 CL
www.AirCraftersLLC.com
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of David McNeill
Sent: Sunday, June 15, 2008 3:39 PM
To: rv10-list(at)matronics.com
Subject: pre stall buffet
As I have worked the approach speeds lower, I believe I am getting pre stall buffeting. During the test period my approaches were at 80 kts and half flaps and 75 kts over the numbers in the flare. I did not notice a vibration in the tail and/or flaps on the left side. Recently I have gone to half flaps and 70 kts on short final and into the flare. I feel a slight vibration in the controls prior to touchdown. Since I have been flying it was imprudent to turn my head to look at the left rear of the aircraft. Anyone else have a similar experience? I plan to get my flying partner to land tthe airplane while I observe the rear of the aircraft.
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