How can I improve the launching and handling of my Chysalis?
I finished my Chrysalis (with fully symmetric dihedral!) last
weekend. I have done lots of soft tosses and some harder (50% power)
throws. I'm pretty pleased so far. The plane weighed about 11.5 oz
and balanced near the aft edge of the envelope for the initial
outings. I was not happy with the handling - kind of mushy and
squirrelly, particularly in the turns.
From : Joe Hahn
Hi Bill.
Please double check your wing twist. This is very critical to getting the
ship to turn well. Put a little washout in the main panel as we describe, in
fact you can increase this a bit for even gentler handling, with just a
slight performance decrease. The tips should be flat--no twist.
I have since brought the CG up
to the forward edge of the range and like the handling much better. It
flies faster than I would have thought. I built the narrow fuselage
and the vee-tail and it is obviously a very clean design. It really
glides flat.
I'm not really sure how to launch this thing. I'm trying to follow
all the advise I read on your web site but still feel like I'm doing
something wrong. It just feels weird. I seem to need some down pitch
command at the top to prevent a stall and subsequent porpoising. It
is hard for me to get my hand smoothly onto the stick to apply the
needed pitch command immediately after launch. I'm trying to get a
straight, javelin-like throw, but don't really where the nose should
be pointed at release. Level? 45 degrees up? I'm kind of out here in
the country and don't have any HLG experts to coach me.
You are going through the same things Don and I experienced when we first
started flying serious handlaunch in '92. Good questions!!
It WILL feel weird for a while---kind of like the first time you try to grip
a golf club "properly"(if you play golf). Only one way around that--the 'ole
"P" word(ok, I'll say it--practice!). Just remember to use a long, smooth
follow through. This helps not only launch height, but also helps to keep
your ADVIL purchases to a minimum ;-)
Down command to level the flight path at the top is necessary with every
launch. Exactly when to give it and how much relates to that nasty "P" word
mentioned earlier. There is no other way to figure this out but to do it. It
is better to level off early with a bit of extra speed than to allow the ship
to stall and drop, losing significant altitude. Your hand will eventually
find that stick without a conscious effort on your part. All of this stuff
gets MUCH easier the more you do it. It is actually a very fun challenge to
try to "nail" the launch with a perfect pushover to proper cruising speed at
the top, and a great way to practice.
It is actually to your advantage to be able to vary your launch angle
depending on the situation/conditions. Initially, simply work on a release
that feels comfortable to you. My typical release is around 30 degrees or so.
That happens to be a natural angle for me, so I use it a lot--however--as you
fly more, you will see situations in which the ability to launch flatter(for
example)will allow you to cover more ground so as to arrive at a more distant
lift area more quickly, sacrificing a bit of altitude for distance.
Alternatively, when a thermal is popping right over your head, a launch more
nearly vertical is an advantage.
The launch angle can also be set after release. Launch your ship at your
"comfort" angle and adjust the climb angle with the stick. This is a bit
trickier in my opinion, but some people do it very successfully. I prefer a
trim setting that gives me a very gentle climb, hands-off, with occasional
stick adjustments to tweak the climb rate if/as desired, followed by a
"perfect" pushover at just the right time!! Now if I can just get the
"perfect" part right every time!!!!
A final comment about the Chrysalis kit. The wood, hardware, plans,
and instructions were all of very high quality. I was genuinely
impressed. The kit was challenging to assemble, but I enjoyed it every
step of the way and am proud of the end result. It's no beauty queen
but it is mine.
Sincerely,
Bill Gerth
Gerald MO
Thank you very much for the kind comments, we're glad to hear that you
enjoyed the kit.
Continued good luck with your Chrysalis, and please let us know if you have
any other questions along the way.
Joe Hahn
DJ Aerotech
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