I totally agree with your figures. I tested my mono XS with Airmaster Prop
engine at idle and 70kts. I decided that 2nm/1000' was a practical rule of
thumb.
regards,
Mike Parkin (G-JULZ)
----- Original Message -----
From: "Terry Seaver" <terrys@cisco.com>
Subject: Re: Europa-List: Glide ratios
>
> We have measured our mono-wheel XS with 912S several times. The first
was
> with a two bladed Whirlwind prop with the engine at idle throttle, prop
full
> fine. We got about 11:1 at about 65 knots best glide.
> We later tested glide with the Airmaster prop, getting about 11:1 with
the
> engine at idle with the prop full coarse, again with a best glide of about
65
> kts. With the engine off and the prop feathered, we got a glide ratio of
about
> 13:1, with the best glide much higher than before, up around 85 kts.
> These were all with a short wing XS, mono-wheel, with the factory speed
> kit. We cruise 140 kts at 5.3 gph, and the plane flies hands off with
equal
> weight in both seats, so I don't believe we have a particularly dirty
> airframe.
> These numbers are lower than the 16:1 numbers I heard claimed. I have
> heard from at least one other XS builder who has measured the glide ratio
on
> his XS, who got very similar numbers (i.e. around 10.5 - 11:1).
>
> regards,
> Terry Seaver
> N135TD
>
>
> irampil@notes.cc.sunysb.edu wrote:
>
> >
> >
> > I have recently purchased the new Garmin 3600 that works using an
> > integrated Palm PDA. It appears to be an excellent EFIS/GPS inexpensive
> > color system. I am needing the glide ratio so the 3600 can determine if
I
> > am within gliding range of an airport. My plane is a trike XS.
> >
> > This is going to be somewhat different for every builder depending on
> > finish, speed kit, prop type, feathering.
> > You'll have to measure your own. With a speed kit and feathering prop,
I
> > believe 20:1 should be within reason.
> > I have not measured mine yet. Has anyone some personal data?
> >
> > Ira N224XS
> >
>
>
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