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nuckolls.bob(at)aeroelect
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 Posted: Mon Apr 27, 2009 11:42 am Post subject: What a glide ratio! |
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Audio track for an engine-out emergency that
had a happy ending . . .
http://media.aopa.org/mp3/n613jm.mp3
at this airport . . .
http://www.airnav.com/airport/KAOO
Airplane was a Columbia built in 2006 . . .
http://tinyurl.com/ddveqa
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
[quote][b]
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frank.hinde(at)hp.com
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| Posted: Mon Apr 27, 2009 12:14 pm Post subject: What a glide ratio! |
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Yup thats what the Columbia wing is designed to do.Nice when they turn out that way!
Frank
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III
Sent: Monday, April 27, 2009 12:41 PM
To: aeroelectric-list(at)matronics.com
Subject: What a glide ratio!
Audio track for an engine-out emergency that
had a happy ending . . .
http://media.aopa.org/mp3/n613jm.mp3
at this airport . . .
http://www.airnav.com/airport/KAOO
Airplane was a Columbia built in 2006 . . .
http://tinyurl.com/ddveqa
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
[quote]
ist">http://www.matronics.com/Navigator?AeroElectric-List
ics.com
.matronics.com/contribution
[b]
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l_luv2_fly(at)yahoo.com
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| Posted: Mon Apr 27, 2009 4:41 pm Post subject: What a glide ratio! |
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Hi all,
Well I am curious as to what the glide ratio actually is. On listening to the tapes he was 18 miles out at 7000 feet. The field elevation was 1500 feet so that gave him 5500' to play with. According to my rough calculations that is about 18:1 which seems pretty high. Tail wind perhaps ?
From listening to the tapes everyone kept there cool, quite an impressive display of airman ship.
Paul
[quote][b]
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bbradburry(at)bellsouth.n
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| Posted: Mon Apr 27, 2009 5:27 pm Post subject: What a glide ratio! |
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He was never “gliding”. He was under partial power the whole way. That is why he was reporting so much vibration. One or more connecting rods had gone thru the top of the engine and cowl, which put the rest of the engine out of balance. He picked a throttle position that gave him as much power as he could without shaking the airframe to bits. Not enough to hold altitude, but apparently enough to make the field. He didn’t lose the engine completely till he cut the mixture when he was over the numbers at 95-100 knots.
What impressed me about this incident, (not withstanding the fact that the guy is a really! good stick and rudder man), is the way his voice sounds as he is discussing his options with ATC. He sounds like he is sitting in his easy chair in his living room…Not 5000 feet from death!
Had this been me, I think the voice might have been a little squeakier! :>)
He gave his wife a lot of credit for not falling to pieces, but his calmness went a long way toward keeping her calm. I think he was more laid back than the controller. Especially when he dropped off the controller’s radar.
Very professional pilot!
Bill B
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Paul McAllister
Sent: Monday, April 27, 2009 8:39 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: AeroElectric-List: What a glide ratio!
Hi all,
Well I am curious as to what the glide ratio actually is. On listening to the tapes he was 18 miles out at 7000 feet. The field elevation was 1500 feet so that gave him 5500' to play with. According to my rough calculations that is about 18:1 which seems pretty high. Tail wind perhaps ?
From listening to the tapes everyone kept there cool, quite an impressive display of airman ship.
Paul
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[quote][b]
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Ed Anderson
Joined: 10 Jan 2006
Posts: 475
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| Posted: Tue Apr 28, 2009 5:54 am Post subject: What a glide ratio! |
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I once glided 12 statue miles in an RV-6A from 9500 feet, engine totally out, prop not windmilling at a nominal indicated airspeed of 87 mph. I had two choices both 12 miles distant, one of which required a 120 deg turn to the left – but, it was downwind and the one I selected (that Garmin 195 with its nearest button repaid all of its cost on that day). Approx 8 – 9 minutes later I arrived off the upwind end of the runway with sufficient altitude to do a 360 deg turn and two hard “S” turns to bleed off altitude. Still crossed the fence around 100 mph but having a 4000 ft runway made that a non- factor.
As best I could calculate from the altitude, distance, etc I came up with a glide ratio of 9.8:1. Slightly short of the 10:1 advertised by Van, but then my glide speeds were undoubtedly not optimum over the entire period. However, didn’t collect wind data other than knowing it was downwind. That was my experience. No damage to anything but my nerves and seat cushion.
Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson(at)carolina.rr.com
http://www.andersonee.com
http://www.dmack.net/mazda/index.html
http://www.flyrotary.com/
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.rotaryaviation.com/Rotorhead%20Truth.htm[url=http://www.dmack.net/mazda/index.html][/url]
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Paul McAllister
Sent: Monday, April 27, 2009 8:39 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: AeroElectric-List: What a glide ratio!
Hi all,
Well I am curious as to what the glide ratio actually is. On listening to the tapes he was 18 miles out at 7000 feet. The field elevation was 1500 feet so that gave him 5500' to play with. According to my rough calculations that is about 18:1 which seems pretty high. Tail wind perhaps ?
From listening to the tapes everyone kept there cool, quite an impressive display of airman ship.
Paul
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0123456789
__________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________
The message was checked by ESET NOD32 Antivirus.
[quote][b]
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_________________
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com |
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MauleDriver(at)nc.rr.com
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| Posted: Tue Apr 28, 2009 8:25 am Post subject: What a glide ratio! |
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I read about this landing but didn't pay any attention to the airport or
location. But now I realize that I've spent a lot of time polishing the
ridges all around that area racing sailplanes. Even with a 40:1 glide
ration, trying to find a field from 1500'AGL gets you heart racing in
that area. One valley will have flat farm land, the very next will not
have a enough cleared space to park a car. Much more of the latter in
that particular 10 mile circle.
Anyone who has driven the PA Turnpike through the Bedford area pretty
much gets the picture. Not a good place for setting one down at night.
The roads are definitely not a good option there. He's lucky to have
not gone dead stick and very good to have kept his cool.
Thanks Bob
Robert L. Nuckolls, III wrote:
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longg(at)pjm.com
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| Posted: Wed Apr 29, 2009 10:45 am Post subject: What a glide ratio! |
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For anyone who has flown to Happy Valley they know the hills around there require 2000+ for general MSA around the field. Below that you start bumping into things. That would mean he could not have sunk below 2k until he was over the ridge right in front of the field. As I recall the best approach to stay clear of pot holes is from the NW which follows the contour of the valley. Again, impossible to determine at night. IAF is charted at 4300. Even if you don’t hit something below 2000 in this area, I’ll guarantee you’ll never see the field.
Hell of a glide to travel that far and still make it over the field ridge above 2000.
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Ed Anderson
Sent: Tuesday, April 28, 2009 9:51 AM
To: aeroelectric-list(at)matronics.com
Subject: RE: What a glide ratio!
I once glided 12 statue miles in an RV-6A from 9500 feet, engine totally out, prop not windmilling at a nominal indicated airspeed of 87 mph. I had two choices both 12 miles distant, one of which required a 120 deg turn to the left – but, it was downwind and the one I selected (that Garmin 195 with its nearest button repaid all of its cost on that day). Approx 8 – 9 minutes later I arrived off the upwind end of the runway with sufficient altitude to do a 360 deg turn and two hard “S” turns to bleed off altitude. Still crossed the fence around 100 mph but having a 4000 ft runway made that a non- factor.
As best I could calculate from the altitude, distance, etc I came up with a glide ratio of 9.8:1. Slightly short of the 10:1 advertised by Van, but then my glide speeds were undoubtedly not optimum over the entire period. However, didn’t collect wind data other than knowing it was downwind. That was my experience. No damage to anything but my nerves and seat cushion.
Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson(at)carolina.rr.com
http://www.andersonee.com
http://www.dmack.net/mazda/index.html
http://www.flyrotary.com/
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.rotaryaviation.com/Rotorhead%20Truth.htm
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Paul McAllister
Sent: Monday, April 27, 2009 8:39 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: What a glide ratio!
Hi all,
Well I am curious as to what the glide ratio actually is. On listening to the tapes he was 18 miles out at 7000 feet. The field elevation was 1500 feet so that gave him 5500' to play with. According to my rough calculations that is about 18:1 which seems pretty high. Tail wind perhaps ?
From listening to the tapes everyone kept there cool, quite an impressive display of airman ship.
Paul
| Quote: | | http://www.matronics.com/Navigator?AeroElectric-List http://forums.matronics.com http://www.matronics.com/contribution |
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The message was checked by ESET NOD32 Antivirus.
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