trying a 2-meter sailplane and/or electric sailplane,
you might do well to take a look.
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the wings mounted that you'll never
finish the model!
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is designed to take advantage
of them.
This subject has been thoroughly thrashed over many times in the past,
almost as much as the Downwind Turn and the Skeeter threads. Some of the
results of those discussions can be found in the Ask Joe and Don section
of our website.
Don Stackhouse @ DJ
all answer.
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,
or so I am told. I can see arguments on both sides of this issue. However,
the fact remains that it was set up that way for a specific reason, with
apparently a fair amount of forethought behind it.
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to the airplane.
We simply use good equipment and reasonable care and prudence when using
and when re-charging these batteries. The horror stories are not something
to completely disregard, but not a big prohibitive risk either.
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, as well as every
morning after that.
Spectra (or its equivalents) has its place, but if there is a need for
something with dimensional stability, Spectra is usually not a good choice.
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fortunately just used the composite for the outer shell for shape, but used
wood for the primary load-bearing structure). His comment was that The
Dynel is a great way to hold the epoxy in place while it cures.
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. Generating accurate
numbers usually requires considerably more work.
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of turning it off while
I'm flying? Savannah is smart enough to figure out if the sight of one of
my toys overhead means the fence is shut down.
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span. That's very do-able, and entirely in
keeping with the laws of physics.
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with better use of the servo torque, less sensitivity to slop and better
resolution.
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out the door with each kit. Just like certain laws of physics,
there's just no way to get around certain laws of economics.
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fine, although I did get very
good at keeping track of all pins, X-acto knives and blades, C/A bottles, etc.!
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innocent bystanders who observe you doing
this will feel at least a little apprehensive about doing any future
business with you. This is true regardless of whether you're a vendor or a
customer.
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to fit the context of where you plan to use it, just
let us know and we'll work with you.
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. It was a sweet handling airplane for its time, but I don't
really have any desire to go back.
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these control
inputs. It all depends on how the various factors and forces add up. The
bottom line is that you should use whatever control inputs are needed to
make your airplane straighten up and fly right!
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angle than that. Airplane design almost inevitably involves some compromise.
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Skye Malcolm writes:
It seems to me that you're on the right track with the steel rods. You =
might see if you can find one tempered. ...
There are several different ways to harden different types if steels. One
is by heat treating. The typical process is to heat it above the
temperature
a
rather tricky problem.
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eivers, ESC's and batteries. I used to wrap my servos in paper tape and
then C/A them in, and had major problems with the tape delaminating,
releasing the servo. Since I started using heat shrink tubing, I have yet
to have one come loose except when I wanted it to!
Don Stackhouse @ DJ A
been
demonstrated to be strong enough for a two-man F3J tow WITH a stake?
I just happen to know of such a plane. It's already in production and
available, and doesn't cost nearly as much as most of the hollow-molded ships.
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at is
more important than the software you're using is your experience and skill
in properly interpreting its outputs.
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the servo, slit the shrink tubing. Once the
servo is safely out, it's fairly easy to peel the shrink tubing and glue
residue out, then just use a new piece of shrink tubing to install the new
servo.
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utter, just as
with an unswept panel. Yes, the wire will be sliding across the template at
an angle. As long as the template is smooth, reasonably stiff, and
adequately held against the end of the core, this will NOT be a problem.
I've cut MANY cores for swept wings this way with no trouble.
Don S
bright.net/~djwerks/askjd/tailvolumn.html
but while you're in AJD you might want to browse through some of the other
articles as well, you'll probably find some other useful information as well.
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experience seems to be transparent Monokote, although Ultracoat and
Oracover are somewhat tougher. We've had good results with all of those three.
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ee for himself. He does have a 2-M Spectre on order,
and I fully expect that when he flies it he will be very pleasantly
surprised. As usual.
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completely for the loss of air density, and the
Reynolds numbers go lower. This usually hurts performance over the entire
operating envelope, althoiugh the exact extent of that loss depends on how
well the design of the specific model in question handles the decrease in
Reynolds numbers.
Don Stackhouse
ide effect
that, although it might have been triggered by the decalage change, was not
directly due the decalage change itself.
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&q
uld be OK for tail surfaces on most models. However, I wouldn't
recommend them for flaps and ailerons of 2-meter and larger models, those
tend to see a lot of abuse during landings. For those applications the
sturdier conventional gap seals are probably a better choice.
Don Stackhouse @
, but it's being generated
with much greater efficiency. The net result is that the total drag is
about the same for both tail types, with some small variations either way
depending on design details (sometimes in favor of the V-tail).
Don Stackhouse @ DJ Aerotech
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http
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arbitrary and
unnecessary rules, folks will choose to spend their precious recreational
time at someone else's event.
So, which of those situations is it? Inquiring minds would like to know!
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er Wizards with the short
flaperon horns and stiffer flaperon hinge layups, need more torque from the
servos. For these you may need 150 mah cells and/or 4-cell packs.
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