Re: Fwd: low ceiling high duration

From: John Kagan <john_kagan_at_hotmail.com>
Date: Tue, 02 Dec 2008 20:35:54 -0000

--- In Indoor_Construction_at_yahoogroups.com, "Mark" <f1diddler@...>
wrote:
> Bob, just wondering, do you not have considerable motorstick bow at
> launch, esp. with F1ds? I depend on that (downthrust) for launch
> control.

When an F1D motorstick bows, I think the dominant change is in the
incidence of the stab. You get only a little downthrust (especially
with a wing that is mounted near the front of the motorstick), but a
lot of down elevator. Which is good because with a VP prop you aren't
getting a whole lot of thrust to aim down at that point.

The model simply acts like you relaxed its nose-up attitude a bit.
When I fly the same model with more initial thrust (i.e. lower high
pitch, as in the salt mine) it doesn't nose down even further, but
rather climbs more.
Received on Tue Dec 02 2008 - 12:35:58 CET