Re: [Flightgear-devel] Gusting winds
fgfs --wind=270@15 --prop:/environment/params/gust-wind-speed-kt=25 H, not bad. This one is nasty - but very interesting. I don't even manage to touch down right on the runway - similar to my first experiences with FlightGear Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! -- ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Gusting winds
On Mon, 6 May 2002 16:42:26 -0700 (PDT),
Alex Perry [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]:
In real life, I've been having a hard time with my landings on the
circuit ('suck' might be the most appropriate term).
Minor suggestions ...
(1) Ask to have a night lesson. The air will be a lot smoother and
you can practice things like roundout and ground effect
operations.
..early mornings also works nice here. (roundout == flare out ?)
(2) Wait a second before correcting for a wind gust effect (if
feasible)
because many smaller transients occur in equal and opposite pairs.
..let the _plane_, do the work.
Gives the smoothest weather ride in TwinOtter's too.
Remember, you're not flying a theodolite platform. ;-)
fgfs --wind=270@15
--prop:/environment/params/gust-wind-speed-kt=25
Great! I'll try it. Thanks.
...me2, once I have time. Gasification work, I was ready to
come to California to haul a dollar per kilowatthour, now I
suddenly have a crazy britt wanting me to fire his 3 MW boiler,
and a norse and an afghan wanting me to stuff 2.2 MWe into the
grid and my own neighbors, who'll join me stuffing 350 kWe and
pumping 700 kW pool heat. (I have to dump it _somewhere_.)
..on top of that, some upstart wireless isp here, has found he
needs to enforce his bandwidth policy, to _deliver_, sold
bandwidth. So, I setting up his first Gnu/Linux box. ;-)
--
..med vennlig hilsen = with Kind Regards from Arnt... ;-)
...with a number of polar bear hunters in his ancestry...
Scenarios always come in sets of three:
best case, worst case, and just in case.
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Re: [Flightgear-devel] Gusting winds
In real life, I've been having a hard time with my landings on the
circuit ('suck' might be the most appropriate term).
(1) Ask to have a night lesson. The air will be a lot smoother and
you can practice things like roundout and ground effect
operations.
..early mornings also works nice here. (roundout == flare out ?)
American teaching separates the roundout and the flare as follows ...
a. a straight line = 3 degree descent at constant speed.
b. at ~20ft altitude, pull power to idle and maintain same path
gradually, the nose has to rise and increase AOA for reducing speed.
c. roundout is from 10ft altitude to 1ft altitude (for small planes)
where you change the descent angle to level flight - raise nose 3 deg.
Nose also raises a fraction due to power at idle, but you're still on the
front of the power curve so the AOA change is still relatively slow.
d. if you had too much speed, you now float, where the aero efficiency
is too high so the AOA is barely increasing ... just have to wait.
e. the flare is when airspeed is well past best glide and you're on the
back of the power curve. Drag is increasing rapidly, so real aero
braking occurs, deceleration is noticeable and AOA starts to increase
very rapidly. On the controls, the yoke is visibly moving smoothly.
f. you stall and drop the last fraction of an inch onto the wheels.
once you lower the nose, it takes a _strong_ gust to get you in the air.
In a full stall landing, (c) and (e) are easily distinguished.
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Re: [Flightgear-devel] Gusting winds
In real life, I've been having a hard time with my landings on the
circuit ('suck' might be the most appropriate term).
Minor suggestions ...
(1) Ask to have a night lesson. The air will be a lot smoother and
you can practice things like roundout and ground effect operations.
(2) Wait a second before correcting for a wind gust effect (if feasible)
because many smaller transients occur in equal and opposite pairs.
fgfs --wind=270@15 --prop:/environment/params/gust-wind-speed-kt=25
Great! I'll try it. Thanks.
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Re: [Flightgear-devel] Gusting winds
David Megginson [EMAIL PROTECTED] said: The gust function is simplistic, but at least it is unpredictable, and I find that it messes up my landings just like to real thing. To get winds from 270 @ 15kt gusting to 25kt, try fgfs --wind=270@15 --prop:/environment/params/gust-wind-speed-kt=25 Very interesting. I'll try it out. Best, Jim ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Gusting winds
fgfs --wind=270@15 --prop:/environment/params/gust-wind-speed-kt=25 I can't try it right now; the 3D panel is broken for me and the 2D view environment sets the clip planes to be unusable for 16 bit depth buffering when I get close to ground effect. Disconcerting ... I'll try later again. ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Gusting winds
Alex Perry [EMAIL PROTECTED] said: fgfs --wind=270@15 --prop:/environment/params/gust-wind-speed-kt=25 I can't try it right now; the 3D panel is broken for me and the 2D view environment sets the clip planes to be unusable for 16 bit depth buffering when I get close to ground effect. Disconcerting ... I'll try later again. How old was your previous build? Is Base up to date? The near plane is set in preferences.xml now and should be the same as it has been in 2D view. I'm using a voodoo3 with a 16bit depth buffer, but haven't updated for a day or two. Best, Jim ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
