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1. 11:45 AM - Re: What a glide ratio! ()
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| Subject: | What a glide ratio! |
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@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Ed
Anderson
Sent: Tuesday, April 28, 2009 9:51 AM
Subject: RE: AeroElectric-List: 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@carolina.rr.com
http://www.andersonee.com <http://www.andersonee.com>
http://www.dmack.net/mazda/index.html
<http://www.dmack.net/mazda/index.html>
http://www.flyrotary.com/
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
<http://members.cox.net/rogersda/rotary/configs.htm>
http://www.rotaryaviation.com/Rotorhead%20Truth.htm
________________________________
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Paul
McAllister
Sent: Monday, April 27, 2009 8:39 PM
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
http://www.matronics.com/Navigator?AeroElectric-List
http://forums.matronics.com
http://www.matronics.com/contribution
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