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
14 matches
Mail list logo
