Re: F1D longitudinal stability

From: Tapio Linkosalo <tapio.linkosalo_at_helsinki.fi>
Date: Wed, 21 Nov 2007 11:00:19 +0200 (EET)

On Mon, 12 Nov 2007 RLBailey_at_care4free.net wrote:

>> Bob, thanks. I think I could get away with buiding a larger stab, as
>> the first one is a bit too hefty, and I could get away with lighter
>> structures. But anyway, as moving the CG forward is a better way,
>> thanks Bill for reminding about the spacers. That is the easiest way,
>> as the motor is short and heavy anyway, just bend a spacer a few
>> centimeters long to move the motor and thus CG forward. I'll try that
>> the next time I get a chance to test my F1D.

> Hope it works OK. Please keep us posted!

Well, we had a session last Saturday in a small gym, unfortunately they
had forgotten to turn off the air conditioning, so the conditions were
pretty much unflyable. From the turbulent results I got the impression
that the model might indeed work, and a 200mm (8 in) motor seemed to be
good, with initial burst giving positive climb, and the cruise still
maintaining height (as much as you could see in the bumpy air). Anyway,
the moment of truth will be in the Finnish Champs on Independence Day, the
6th December. Then we will fly in a 20m (60ft) hall, where the air was
good the last time I visited this autumn. I'll let you know how it turns
out :)



-Tapio-
Received on Wed Nov 21 2007 - 01:00:23 CET