Pity we cannot fly it in Europe!
At 04:23 30 October 2013,
usnightl...@gmail.com wrote:
>Having fun in the DuckHawk 15m sailplane=20
>By: Daniel Sazhin
>
>In early September, I had a fantastic day of flying at Blairstown
Airport,
>=
>the culmination of which was having the opportunity to fly Windward
>Perform=
>ance's new DuckHawk. I had just flown the club Grob Twin Astir with my
>brot=
>her, promptly falling out and not exactly having one of my best landings
>in=
> it. It seems that Bill Thar did not see it and upon greeting him, he
>offer=
>ed me to fly the DuckHawk! I was flabbergasted and immediately agreed.
The
>=
>glider was already assembled, so Bill promptly introduced me to the
>cockpit=
> and gave the pre-flight briefing. We pushed the glider out to the line,
>wh=
>ich was easy because at its 440 LBS empty weight it is just like pushing
>my=
> club's 1-26E around!
>
>While I have not flown any high performance single-place gliders before,
>my=
> many years of flying the Condor Soaring Simulator have allowed me to be
>fa=
>miliar with most of the composite sailplanes in the field. I did not feel
>n=
>ervous about being able to control the plane and I was excited to try it
>ou=
>t. The first takeoff was very easy and the DuckHawk had great control
>autho=
>rity and responsiveness. There was no need for any of the takeoff tricks
>fo=
>und on some other sailplanes such as negative flap settings prior to
>takeof=
>f or open spoilers for increased aileron effectiveness. The visibility
was
>=
>great and it was easy to stay behind the tow plane because the DuckHawk
>did=
>n=92t get thrown around in the turbulence. Unfortunately, upon releasing
I
>=
>was unable to find much lift except for one light thermal which amounted
>to=
> zero-sink for a while. Pulling into that thermal, it was quite a
>fantastic=
> sensation bringing the flaps to 10-15 degrees and feeling the glider
>=93gr=
>ip=94 the air. The DuckHawk was able to slow down to a tad over 40 knots
>an=
>d provides the pilot with a lot of feedback from the air. What was
>definite=
>ly noticeable was that the glider does everything you want it to. There
is
>=
>no feeling of =93fighting the glider=94 like in some other gliders I had
>fl=
>own. The DuckHawk handled great at the low speed end and the controls
were
>=
>not twitchy, but yet very responsive. I liked the fact that there is no
>ele=
>vator trim; instead wherever one places the stick, it stays in that
>positio=
>n. The electric flaps are easily controlled in manual mode using a switch
>o=
>n the stick. The flaps move at a brisk rate, but there is no tendency
for
>=
>the glider to =93drop=94 such as when the flaps are moved between notches
>i=
>n other gliders. This DuckHawk is fitted with a prototype automatic flap
>co=
>ntrol system but it was not used on this flight. I returned to the field
>pu=
>t the flaps down and opened the spoilers to land just like you do in
other
>=
>gliders and the nice thing was to put the gear down I just moved the
gated
>=
>switch and out came the gear. Everything went easily on landing and the
>flo=
>ating piston oleo shock is wonderful as there is no bounce and it does
its
>=
>job very nicely and the wheel brake is very effective.
>
>One week later, I took the DuckHawk up for another flight on a day when
>the=
> ridge was working and had the opportunity to experience this glider's
>exce=
>llent cross country capability. Since there were thermals present as
well,
>=
>I had more time to fly the plane and it was a good opportunity to do some
>s=
>talls and get a feel for the plane throughout more of its envelope. The
>sta=
>lls were benign and had very little tendency to drop a wing. The DuckHawk
>i=
>s much like a chameleon in the way it can be thermalled. For instance, at
>5=
>0 knots it requires very little control in maneuvering in a thermal and
>cli=
>mbs very well with little effort. However, unlike other sailplanes, this
>gl=
>ider really does not seem to have a narrow and sensitive =93drag
bucket=94
>=
>and as a result, it can be thermalled even down to 40 knots without a
>signi=
>ficant sink rate penalty. It was quite interesting that the pilot is
given
>=
>quite the latitude in how one wants to go about thermalling, which bodes
>we=
>ll for different conditions and pilot styles. Prior to the flight, Bill
>Tha=
>r also told me that I should consider bringing the glider up to its 160
>kno=
>ts maneuvering speed, which I did after thermalling it for a while. I
>dived=
> away and got up to around 155 knots and then pulled up, heading like a
>roc=
>ket toward the stratosphere. That pull-up was such a rush that I decided
I
>=
>just had to do it again going the other way! One must also consider that
>th=
>is was even done under convective conditions in the vicinity of a ridge,
>no=
>t in smooth air. However, the DuckHawk was absolutely solid and it felt
>abs=
>olutely safe bringing it to a speed that is over the VNE of most other
>sail=
>planes around. The plane was flown dry with a light total flying weight
>aro=
>und 620 LBS and when I got onto the ridge, I immediately noticed that
even
>=
>for its light weight it did not get particularly kicked around by the
>dynam=
>ic air. Unlike my trusty metal steed (1-26), the DuckHawk seemed to
>=93plow=
>=94 through the air and handled beautifully on the ridge. The ridge
>transit=
>ions were quite easy and I flew over 400 km with an average speed of 105
>mp=
>h on the ridge, without doing any turns other than doing some more
>thermall=
>ing practice at the end of =93our=94 mountain. The glider was flown with
>t=
>he prototype automatic/manual flap control system and I think that this
>wil=
>l be an exciting system for the future of the plane as the automatic mode
>s=
>moothly adjusts the flaps throughout their range and gives you the
optimum
>=
>flap setting all of the time. The fast roll rate is conducive to rolling
>in=
> and out very quickly with little adverse yaw. As far as all of the other
>f=
>eatures of the plane you can check them out on the manufacturer=92s
>website=
>.. It is quite a testament to the design of the glider that someone with
as
>=
>little high performance glider time as myself would be able to transition
>s=
>o easily to a world-class racing machine. Windward Performance's DuckHawk
>w=