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rehn(at)rockisland.com
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 Posted: Fri Jun 22, 2007 10:24 am Post subject: glide ratio |
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Is there an average glide ratio for the Europa based on an average of reports? Prop stopped and prop at idle? Thanks
Jerry
[quote][b]
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rsc-93(at)hotmail.co.uk
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| Posted: Fri Jun 22, 2007 2:04 pm Post subject: glide ratio |
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| Quote: | From: "Jerry Rehn" <rehn(at)rockisland.com>
Reply-To: europa-list(at)matronics.com
To: <europa-list(at)matronics.com>
Subject: glide ratio
Date: Fri, 22 Jun 2007 11:22:37 -0700
Is there an average glide ratio for the Europa based on an average of
reports? Prop stopped and prop at idle? Thanks
hi jerry,
i seem to recall seeing approx 500ft /min rate of descent at 75 knots best
|
glide speed clean when i was doing my conversion training with prop at idle
which equates to approx 15:1 in trigear G-OGAN ,bit better than the cessna i
fly at the moment.
best
regards andy cullum rebuilding/ converting to trigear G-CGDH
_________________________________________________________________
Tell MSN about your most memorable emails! http://www.emailbritain.co.uk/
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rsc-93(at)hotmail.co.uk
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| Posted: Fri Jun 22, 2007 2:04 pm Post subject: glide ratio |
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| Quote: | From: "Jerry Rehn" <rehn(at)rockisland.com>
Reply-To: europa-list(at)matronics.com
To: <europa-list(at)matronics.com>
Subject: glide ratio
Date: Fri, 22 Jun 2007 11:22:37 -0700
Is there an average glide ratio for the Europa based on an average of
reports? Prop stopped and prop at idle? Thanks
hi jerry,
i seem to recall seeing approx 500ft /min rate of descent at 75 knots best
|
glide speed clean when i was doing my conversion training with prop at idle
which equates to approx 15:1 in trigear G-OGAN ,bit better than the cessna i
fly at the moment.
best
regards andy cullum rebuilding/ converting to trigear G-CGDH
_________________________________________________________________
The next generation of Hotmail is here! http://www.newhotmail.co.uk
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Gilles.Thesee(at)ac-greno
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| Posted: Fri Jun 22, 2007 2:18 pm Post subject: glide ratio |
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roger cullum a écrit :
| Quote: |
i seem to recall seeing approx 500ft /min rate of descent at 75 knots
best glide speed clean when i was doing my conversion training with
prop at idle which equates to approx 15:1 in trigear G-OGAN ,bit
better than the cessna i fly at the
moment.
|
Roger,
You mean A LOT better than a Cessna 
Most light airplanes I'm aware of are more in the 750-1000 ft/min range.
15:1 finesse seems a remarkable value indeed. Was it a motorglider
version, or was the ship lightly loaded ? Or the idle setup very high ?
Best regards,
--
Gilles
http://contrails.free.fr
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cptimm(at)telus.net
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| Posted: Fri Jun 22, 2007 2:50 pm Post subject: glide ratio |
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on 07/6/22 3:04 PM, roger cullum at rsc-93(at)hotmail.co.uk wrote:
| Quote: |
> From: "Jerry Rehn" <rehn(at)rockisland.com>
> Reply-To: europa-list(at)matronics.com
> To: <europa-list(at)matronics.com>
> Subject: glide ratio
> Date: Fri, 22 Jun 2007 11:22:37 -0700
>
> Is there an average glide ratio for the Europa based on an average of
> reports? Prop stopped and prop at idle? Thanks
>
>
> hi jerry,
i seem to recall seeing approx 500ft /min rate of descent at 75 knots best
glide speed clean when i was doing my conversion training with prop at idle
which equates to approx 15:1 in trigear G-OGAN ,bit better than the cessna i
fly at the moment.
best
regards andy cullum rebuilding/ converting to trigear G-CGDH
> Jerry
>
_________________________________________________________________
The next generation of Hotmail is here! http://www.newhotmail.co.uk
Jerry and all,
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my Classic Mono, with feathering Airmaster prop and two up, sinks at close
to a 1000' per min. with the engine off. When feathering is complete the
sink-rate settles at 350' per min. at 87 knots and the glide ratio is
considerably better than some of the gliders I used to fly in my youth.
Mind you, an engine failure shortly after take-off would not leave time for
anything other, than getting the nose down and looking for a suitable place
ahead. I have not tested the sink-rate or glide with flaps and gear down
yet.
BTW, we did not bother to re-start the engine and slipped off the excess
altitude on final, followed by an uneventful dead-stick landing.
Try it, it's fun
Peter Timm, #110, C-GIET, 340 hrs.
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96victor(at)gmail.com
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| Posted: Fri Jun 22, 2007 3:28 pm Post subject: glide ratio |
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Hi Peter
Please correct my math... sink rate of 350'/min (at) 87kts gives a glide ration of 25:1... Something must be wrong with my calculations...
That surely is as good as many gliders??
How's the weather? I should get there Sunday later in the afternoon am getting excited.
Tom
On 6/22/07, Peter Timm <cptimm(at)telus.net (cptimm(at)telus.net)> wrote: [quote]--> Europa-List message posted by: Peter Timm <cptimm(at)telus.net (cptimm(at)telus.net) >
on 07/6/22 3:04 PM, roger cullum at rsc-93(at)hotmail.co.uk (rsc-93(at)hotmail.co.uk) wrote:
| Quote: | --> Europa-List message posted by: "roger cullum" < rsc-93(at)hotmail.co.uk (rsc-93(at)hotmail.co.uk)>
> From: "Jerry Rehn" <rehn(at)rockisland.com (rehn(at)rockisland.com)>
> Reply-To: europa-list(at)matronics.com (europa-list(at)matronics.com)
> To: <europa-list(at)matronics.com (europa-list(at)matronics.com)>
> Subject: glide ratio
> Date: Fri, 22 Jun 2007 11:22:37 -0700
>
> Is there an average glide ratio for the Europa based on an average of
> reports? Prop stopped and prop at idle? Thanks
> hi jerry,
i seem to recall seeing approx 500ft /min rate of descent at 75 knots best
glide speed clean when i was doing my conversion training with prop at idle
which equates to approx 15:1 in trigear G-OGAN ,bit better than the cessna i
fly at the moment.
best
regards andy cullum rebuilding/ converting to trigear G-CGDH
> Jerry
>
_________________________________________________________________
The next generation of Hotmail is here! http://www.newhotmail.co.uk
Jerry and all,
|
my Classic Mono, with feathering Airmaster prop and two up, sinks at close
to a 1000' per min. with the engine off. When feathering is complete the
sink-rate settles at 350' per min. at 87 knots and the glide ratio is
considerably better than some of the gliders I used to fly in my youth.
Mind you, an engine failure shortly after take-off would not leave time for
anything other, than getting the nose down and looking for a suitable place
ahead. I have not tested the sink-rate or glide with flaps and gear down
yet.
BTW, we did not bother to re-start the engine and slipped off the excess
[b]
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cptimm(at)telus.net
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| Posted: Fri Jun 22, 2007 5:13 pm Post subject: glide ratio |
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on 07/6/22 4:28 PM, Tom Friedland at 96victor(at)gmail.com wrote:
| Quote: | Hi Peter
Please correct my math... sink rate of 350'/min (at) 87kts gives a glide ration of 25:1... Something must be wrong with my calculations...
That surely is as good as many gliders??
How's the weather? I should get there Sunday later in the afternoon am getting excited.
Tom
On 6/22/07, Peter Timm <cptimm(at)telus.net> wrote:
| Quote: | --> Europa-List message posted by: Peter Timm <cptimm(at)telus.net >
on 07/6/22 3:04 PM, roger cullum at rsc-93(at)hotmail.co.uk wrote:
> --> Europa-List message posted by: "roger cullum" < rsc-93(at)hotmail.co.uk <mailto:rsc-93(at)hotmail.co.uk> >
>
>
>
>
>> From: "Jerry Rehn" <rehn(at)rockisland.com>
>> Reply-To: europa-list(at)matronics.com
>> To: <europa-list(at)matronics.com>
>> Subject: glide ratio
>> Date: Fri, 22 Jun 2007 11:22:37 -0700
>>
>> Is there an average glide ratio for the Europa based on an average of
>> reports? Prop stopped and prop at idle? Thanks
>>
>>
>> hi jerry,
> i seem to recall seeing approx 500ft /min rate of descent at 75 knots best
> glide speed clean when i was doing my conversion training with prop at idle
> which equates to approx 15:1 in trigear G-OGAN ,bit better than the cessna i
> fly at the moment.
> best
> regards andy cullum rebuilding/ converting to trigear G-CGDH
>> Jerry
>>
>
> _________________________________________________________________
> The next generation of Hotmail is here! http://www.newhotmail.co.uk <http://www.newhotmail.co.uk>
>
>
>
>
>
Jerry and all,
my Classic Mono, with feathering Airmaster prop and two up, sinks at close
to a 1000' per min. with the engine off. When feathering is complete the
sink-rate settles at 350' per min. at 87 knots and the glide ratio is
considerably better than some of the gliders I used to fly in my youth.
Mind you, an engine failure shortly after take-off would not leave time for
anything other, than getting the nose down and looking for a suitable place
ahead. I have not tested the sink-rate or glide with flaps and gear down
yet.
BTW, we did not bother to re-start the engine and slipped off the excess
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there is nothing wrong with your math, Tom, there is usually some lift where we flew, at least part of the way. I fully expected to have to re-start the engine. We'll try it again and you do the flying! It is quite amazing what the Europa can do in the clean configuration.
The weather turned nice in the afternoon after a drizzly morning. Sunday should be similar and Monday and Tuesday are predicted to be better. We'll have enough flying to see you through.
Looking forward to seeing you!
Peter
[quote][b]
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davidjoyce(at)doctors.org
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| Posted: Sat Jun 23, 2007 2:41 am Post subject: glide ratio |
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Roger, When my mono with speed kit was new and shiny, I did tests of glide
ratio at different speeds in a big blue gap over the Severn Estuary
(admittedly such air might have bee sinking marginally cutting a little bit
off the true ratio) I found that I had 1:12 at 75 kts with 70 or 80kts
making very little difference. You could argue that choosing 80 adds to your
safety without significant penalty, giving a better margin while you are
distracted by all the things you will be sweating over in the next few
minutes. Gliders with a minimal sink speed of 40 or 50 kts will typically
speed up to 60 kts (or greater in strong winds) to land to have spare energy
in hand to cope with loss of speed going through the wind gradient , etc.
Regards, David Joyce
---
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