Very slick design - but one question: As the original designer died in it in
a "stall accident" what are the changes that you have made in the x-plane
version from his original which has made it stall-proof (ala canard), while
his obviously was not?
Cheers,
Pete
A239
On Sat, Sep 27, 2008 at 10:06 AM, glenn crowder <gcrowder2@hotmail.com>wrote:
> This is an incredible concept that has not been utilized IMO. The
> joined wing concept is the most efficient per NASA studies
> http://www.aoe.vt.edu/design/ikelos/ as it eliminates the draggy tip
> vortices that plague all other designs. The Stratos has
> an L/D of 19/1 and the original needed flaps to degrade the glide enough to
> allow a steeper landing approach. You have
> effective sailplane efficiency in a very compact planform. In addition the
> wings can be made much lighter as the joined wing
> at the tips adds great strength. The lower wing is totally flat with no
> dihedral making it easy to build. The upper wing needs
> no twist and uses 2 deg dihedral. Other advantages are much stronger
> pilot/passengers protection due to the cage type construction,
> wide tolerance of CG changes and greater tolerance for gusty conditions due
> to the short wings.
>
> On the sim it is possible to take off with the stick full back, just wait
> for rotation and the a/c will just climb away bobbing its
> nose with full roll and yaw control. Fully aerobatic too but pitch
> sensitivity is a little much for landing in this mode, easily
> corrected with a pitch limiter for landing. Don't see why the concept
> couldn't work for crowd killers as well as the short wings
> should allow twice as many gates at the terminal.
>
> Very cool pic: http://www.ligeti-stratos.com/assets/images/hg_3_big.jpg
>
>
> ------------------------------
>
> From: craigb@onthenet.com.au
> To: europa-list@matronics.com
> Subject: RE: Europa-List: New tandem wheel flying wing biplane - this one's
> different!
> Date: Sat, 27 Sep 2008 11:14:23 +1000
>
>
> How weird is that, the design is very close to one I was considering to
> scratch build before i started on my XS, glad to know it will
> fly ok, I didnt think anyone else would like such a departure from the
> "norm", my only concern was where to put the prop, I was thinking
> about belt drive ducted fans between the two wings
>
> -----Original Message-----
> *From:* owner-europa-list-server@matronics.com [mailto:
> owner-europa-list-server@matronics.com]*On Behalf Of *glenn crowder
> *Sent:* Friday, 26 September 2008 4:38 AM
> *To:* europa-list@matronics.com
> *Subject:* Europa-List: New tandem wheel flying wing biplane - this one's
> different!
>
> Would love to build this one in my spare time. Original was 78 sq ft and
> 172 lbs with engine. I have scaled it up to 110 sq ft, built it in X-plane
> with 50 hp, goes 160 mph, flies wonderful using NACA 23012 airfoil, stalls
> at 35, although it just does the canard stall, bobbing it's nose gently in
> the breeze.
>
> http://www.ligeti-stratos.com/
>
> Glenn
>
>
> ------------------------------
>
> Date: Thu, 25 Sep 2008 10:26:09 -0700
> Subject: Re: Europa-List: Monowheel designs... any others out there?
> From: fklein@orcasonline.com
> To: europa-list@matronics.com
>
>
> On Thursday, Sep 25, 2008, at 08:11 US/Pacific, rick wrote:
>
>
> Just as a matter of interest could I turn a Mono on my short, very bumpy,
> grass strip (max 20' wide with no turning area) after backtracking in a
> strong wind. I sometimes have trouble with my trike using full braking on
> one wheel!
> !!...*touche'*...that needle do twist nicely...*ouch*...always nice to
> recognise the depth of our commitment to our respective decisions...pity we
> tend to cloak ourselves in claims of rationality for what is, IMO, an
> essentially irrational enterprise...but I love this thread which again, IMO,
> celebrates the extreme flexibility of a wonderful airframe which sees such
> variety (mono, trigear, conventional taildragger, short wings/long wings,
> Rotax, Soobs, Jabs, CAM/Honda, Smart Brabus, O-200, and ; -->
> ------------------------------
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