I can't argue with that...I was just wagging it because wiki says 34 lbs.
Still, a very good looking selection for the purpose. I think I have
figured why the faa has that criteria. I think they are combining surface
loading and aspect ratio...both use wing surface...just a guess.of
course...but
, jon kimmel via KRnet wrote:
Subject: Re: KR> KR1B motorglider criteria question
To: "KRnet"
Cc: "jon kimmel"
Date: Monday, July 11, 2016, 8:11 PM
The goal with a self
launched sailplane is glideslope and low stall
speed...so high aspect ratio and low weight.?
The
OK regarding the weight. I put 800lbs as a *gross* weight because I
believe thats what the FAA criteria formula is based on, but not sure.
The lightest KR (a 1.5) on the spreadsheet is 525lbs empty with a VW.
I weight almost 200lbs. Fuel will be at least another hundred. That's
825 right there.
I
The goal with a self launched sailplane is glideslope and low stall
speed...so high aspect ratio and low weight. The engine we selected back
in '82 was a kfm 107...25 hp at 40 lbs. You could do a max gross of under
500 lbs with an engine like that.
https://sites.google.com/site/mykr2stretch/
htt
It will weigh 800 lbs if you put a Lycoming O-720 on it.
John
In a message dated 7/11/2016 3:48:08 P.M. Mountain Daylight Time,
krnet at list.krnet.org writes:
At 03:33 PM 7/11/2016, you wrote:
>if gross weight of say, 800lbs, what would the span need to be?
+++
I think its 27ft. ?but what I was getting it is FAA compliance to legally be a
motorglider, which does not require a medical for example like LSA, ?and would
allow retracts, cockput adjustable prop pitch, etc. and no altitude limitation.
just curious if the kr1b complies.?
Sent from my T-Mobil
The KR-1B wingspan is 27', empty weight 484 pounds, and gross weight 800
pounds. According to the previously mentioned rules (assuming they are
true), that means a max weight of 452 pounds, whether gross or empty,
which is less than either of the advertised numbers.
Mark Langford
ML at N56ML.c
At 03:33 PM 7/11/2016, you wrote:
>if gross weight of say, 800lbs, what would the span need to be?
++
I calculate 36 feet span but I can't imagine a kr1 motor glider
having a gross weight of 800 pounds I doubt the spars will
handle a 36 foot
if gross weight of say, 800lbs, what would the span need to be?
Sent from my T-Mobile 4G LTE Device
My assumption is that they are talking gross weight.
We did a powered sailplane design as my senior design project in
college...but I don't remember any details...long long time ago...found a
great little 2 cylinder engine that weighed next to nothing.
https://sites.google.com/site/mykr2stretch/
At 08:30 AM 7/11/2016, you wrote:
>At 07:59 AM 7/11/2016, you wrote:
>
>>"The maximum weight to wing span squared w/b squared ) does not exceed
>>>3.0 kg/ma (0.62 lb./ft squared )"
>>>
>>>http://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_21.17-2A.pdf
>>++
At 07:59 AM 7/11/2016, you wrote:
>"The maximum weight to wing span squared w/b squared ) does not exceed
>>3.0 kg/ma (0.62 lb./ft squared )"
>>
>>http://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_21.17-2A.pdf
>+++
After furth
"The maximum weight to wing span squared w/b squared ) does not exceed
>3.0 kg/ma (0.62 lb./ft squared )"
>
>http://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_21.17-2A.pdf
+++
Chris,
I checked the web site and couldn't find
I noticed that nvAero now offers the KR1B motorglider wing plans.
The FAA specifies the criteria for a plane to be considered a
motorglider and the main one is:
"The maximum weight to wing span squared w/b squared ) does not exceed
3.0 kg/ma (0.62 lb./ft squared )"
http://www.faa.gov/documentLib
Ron Freiberger wrote:
> My problem... not enough garage room for the KRSport wing.
There's an interesting article in the December 2003 Kitplanes (page 15) that
discusses the Europa MOTORGLIDER. The guy that built it lost his medical,
but discovered that all you need to fly a "motorglider" is a g
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