Just reached 25 hours into the test flight period. Rock solid.
Now to get the 1 rotor mounted and vetted for the beta prototype.
On the ground it is 16 deg. F under the inversion.
Up at 7000 feet it is 36 deg. Almost tolerable.

Chris Cosman

Congratulations Chris. It is a real cute airplane.

Paul Lamar


Great airplane!: Regarding the V tail, I guess the most popular use of this
arrangement was in a Beechcraft airplane (Bonanza?) the upside down version,
with the V not as a Vee, but as an A, may have the advantage of inducing
roll in the right sense, while the V tail induces roll in the opposite sense
of turn.

I've always wanted considering an airplane with a Canard configuration (Tail
first as in the 14 bis by Santos Dumont, the Curtiss Ascender and the North
American B-70 Walkyrie) that offers additional lift, while the usual
arrangement of tail in the rear part of airplane produces no lift, or even a
force down.

It was supposed that this arrangement has the added advantage of the canard
surface stalling first, then blocking the main wing approaching an stalling
incidence, as it usually has a higher incidence or angle of attack than the
main wing, but some discuss this, and a recent article in Flying, October
2012, about an accident in a Rutan Canard that lost suddenly power because
of a broken propeller, that ended in the pilot killed, seems having been
worsened by the pilot pulling back the stick, instead of pushing it down to
gain airspeed and attempt some emergency landing, the Canard entered a flat
stall and precipitated to the ground at high speed, but in a flat attitude.

There's an old article in Flight International, entitled: "Canards, design
with care", (Free and open access in their website) dealing with the subject
of foreplanes, and a very old article in the french "Aviation magazine",
about the Saab Viggen, points that the best arrangement in canard airplanes
would be a tail unit placed in an upper position respect to the main wing,
it can be in the upper section of fuselaje, or immediately after the pilot's
cabin, and the wing placed in a low position, in the inferior rear part of
fuselage.

Don't know much about the Piaggio canard private transport airplane, besides
that they sold few, and are or were buying back those still flying in order
not to continue having a legal obligation to maintain an stock of spare
parts for repairs.

The concept of a Canard surface of the A or inverted Vee type, placed in the
upper part of the airplane, with a wing surface in the inferior part always
looked to me as interesting, and if somebody has the computing power and
software to make a simulation of the flight characteristics of an airplane
arranged this way, I'll greatly appreciate knowing any results, or simply
having comments, oppinions or discussions on the subject.
t.

Thank you for your kind attention.

Have a nice week, best regards, salut +

Jose Gros-Aymerich
Madrid, Spain.


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