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Glide Ratio

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dpark

Joined: 25 Sep 2013
Posts: 30
Location: Heald Green

Posted: Thu Sep 05, 2019 4:58 am Post subject: Glide Ratio

Does anyone have an idea of the glide ratio of a Trike feathered or otherwise??



Dave

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_________________
Dave Park G-LDVO Europa XS Trike 912uls

Europa48

Joined: 01 Feb 2018
Posts: 32
Location: Kelso

Posted: Thu Sep 05, 2019 5:18 am Post subject: Re: Glide Ratio

 	  dpark wrote: 	
		  Does anyone have an idea of the glide ratio of a Trike feathered or otherwise??



Dave 	




Apologies for not answering your question.



It will always be less than you think! An engine failure at any given height will not automatically give you the published maximum distance to find a landing site. Having flown helicopters which pretty well go to the place almost directly under your feet when looking out of the cockpit and also having had several engine failures over the years I would not consider looking at the altimeter and think "Oh, 4,000 I should be able to g X miles from here." There are too many variables out there the will come into play.



I once had an engine stop on finals to Shobdon in a Bonanza and although I could see the runway less than 2 miles away from 1500 feet I just picked a field close by and went there and landed with practically no damage save for some barbed wire scratches to the wings when I went through a fence.



I don't think I would have made the runway tempting as it was.

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christoph.both(at)acadiau
Guest

Posted: Thu Sep 05, 2019 6:29 pm Post subject: Glide Ratio

Classic wing TRI with 2 blade Woodcomp SR3000-2blade:

Best glide speed for minimum sink, propeller NOT feathered: IAS 75 kts,  700ft/min

Best glide speed for minimum sink, propeller feathered: IAS 70 kts, 600 ft/min

No wheelpants.

1250lbs

Christoph Both

Wolfville, Nova Scotia

Canada

On 2019-09-05, 5:20 PM, "owner-europa-list-server(at)matronics.com on behalf of david park" <owner-europa-list-server(at)matronics.com on behalf of dpark748(at)hotmail.co.uk> wrote:



    

    

    

    Does anyone have an idea of the glide ratio of a Trike feathered or otherwise??

    

    Dave

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Hitchflight

Joined: 22 Feb 2018
Posts: 94
Location: Derbyshire, England

Posted: Thu Sep 05, 2019 11:17 pm Post subject: Re: Glide Ratio

Hi David



After much testing. I decided to go with 12:1 for my XS Mono

I incorporate the distance in Sky Demon. A software feature then portrays the gliding distance available based on this assumption.

The software takes into account altitude, wind direction and topography.



A picture is worth a thousand words. See picture attached.



Regards



Bob

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