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Author SHA1 Message Date
curt
9b1e230b87 Lee Elliott:
I've been messing with the yf23 some more.  I think it flies a bit better now
and has more reasonable auto-pilot take-off characteristics - just apply full
power and go, and it doesn't go into such a steep climb.

Out of curiosity, I've also taken the rudder control input and linked it to
the stabilators/elevators and ailerons.  Now, with some slick joystick
manipulation it's possible to fly it at about 30 deg off-axis in more or less
level flight (actually, with full 'rudder' input, it looks nearer to 40 deg
to me and you end up tracing a very long curve).

If no rudder input is used it flies 'normally'.

I'd like to be able to 'tune' it so that it's more stable while transitioning
but I'm not sure if that's going to be possible.  It's also high-lighted some
problems I'm having with my Sidewinder joystick - when I use the rudder
control, the engine No.2 throttle jumps to 50% unless auto-throttle is
engaged (this also happens with the b52 too), and there seems to be some
interaction between the different axis if all three (roll, pitch and rudder)
are changed at the same time - difficult to be sure on that one though.

I'll probably un-map the throttle control from the joystick as I tend to use
the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
curt
d7fc05e5ba Lee Elliott:
Here's a quick update to the yf23 fdm and auto-pilot settings.  It flies and
takes-off reasonably well - still haven't tried landing it yet;)  It can
still be a bit wobbly at times though and It's not very good at terrain
following either.

Taking off on auto-pilot is quite fun.  Set full flaps and CTRL-a (assuming
you're near sea level), hit F6 to make it go straight and apply power - about
50% until it rotates then apply full power.  Retract the gear as soon as it
gets off the ground and by the time you#ve done that, retract the flaps.
Quite entertaining from a tower view:)

It's not really an ideal a/c to model but apart from the aesthetics, which
appeal to me, I was curious about not having a rudder.

There's a new texture sheet too but it only makes the a/c a paler shade of
grey.
2003-05-28 15:11:22 +00:00
curt
323fce18f7 Lee Elliott:
I've attached an update for the yf23 and I think I've included all the right
files - the model is unchanged (I think I'll eventually paint it in an
imaginary NASA scheme, perhaps a bit like the HIDEC F-15, until I can get
some newer pictures and see what they've done with it) so I've not included
it again.

The fdm still needs quite a bit of work - it can be a bit twitchy and wobbly
at times, and the auto-pilot roll-out and smooth need tightening up, but it's
flyable.  Haven't tried landing it yet though;)
2003-05-28 15:09:30 +00:00
david
30608cc982 Use new magnetos property. 2003-04-05 15:15:40 +00:00
curt
263992cad3 Lee Elliott:
Here's a 'beta' version of a YF23.  The model is virtually finished - I think
I just need to split the wheel well and cockpit linings to clear up the
smoothing artifacts, and add a couple of other little details.

The texturing is rudimentary, all I've done is to map simple colour blocks to
everything.  There's a definite problem with the rear cockpit canopy
transparency - anything viewed through it, except for the pilot stuff and the
rear canopy surround is invisible.  The weird thing is that everything is ok
if you angle the view to look through the front canopy - this is easier to do
with the rear canopy open (parking brake).  The front and rear canopy
glasses, and hud glass are the only transparent objects, and they're all at
the bottom of the hierarchy.

I'd found that if I placed objects below any transparent objects in the
hierarchy, they'd become invisible when viewed through the transparent object
- any objects above the transparent objects would be visible.  This seems to
have worked for the front canopy and hud (the pilot and seat is visible from
the front view through both the front canopy and the hud glass) but not the
rear canopy.

Time for a bit more experimentation, methinks.  That, or find TFM to R:)

I've finally got the u/c door/gear timing working, and I'm also pleased with
the suspension animation.  I couldn't resist linking the pilot's head to the
rudder - it's not as though it does anything, except on the ground (where it
also operates the nose wheel steering.

It all still needs some tuning and finishing - I've modelled the front wing
flaps/slats/what-ever-they-ares and I've put some slats in the fdm, but I
haven't 'used' them yet.  The suspension is still too spongey and it heels
over quite badly on take-off in cross-winds (shows off the independent main
suspension nicely though), and more work on the fdm is needed too.
2003-04-04 15:58:39 +00:00