STALLS !

Questions about training in general, syllabus', requirements etc
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Bacardi
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Postby Bacardi » Sat Jan 27, 2007 6:33 pm

Last edited by Bacardi on Thu May 17, 2007 10:31 pm, edited 3 times in total.
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Tumbleweed
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Postby Tumbleweed » Sat Jan 27, 2007 7:55 pm

Good one, Bacardi.

Found radical difference from stalling the trainer Windlass with instructor and doing on mine.

Going from a swinging hammok to a big dipper. Was not nice. Know what to look for, what to do, and that's enough for me.
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Bacardi
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Postby Bacardi » Sat Jan 27, 2007 8:48 pm

Last edited by Bacardi on Thu May 17, 2007 10:32 pm, edited 1 time in total.
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Aerosan
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Postby Aerosan » Sat Jan 27, 2007 11:27 pm

Bicardi-well described, and although I don’t fly trikes I could visualize what happens and how it must have felt :!: :o :shock: nearly wetted my broeks :lol: :P :lol:
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Big-D
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Postby Big-D » Sun Jan 28, 2007 7:58 pm

Bacardi :shock: Eish brother... Scary stuff

Don't really want to admit this but I stalled airy by accident not too long ago - Was checking VSI for rate of climb and decided to see how much I can increase by pushing bar forward with eyes fixed on VSI....Next thing VSI moved in opposite direction very quickly...you get the picture, did not see it coming - Not a violent stall but a stall never the less and I won't try and do steep climbs without watching AIRSPEED again :oops:

Camel - I have always wanted to ask you, on your avatar - where it Petite ?

I am sure I know a cool engineer flying from Petit :D

D
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Camell
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Postby Camell » Mon Jan 29, 2007 7:35 am

Right you are! 8)
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Bacchus
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Postby Bacchus » Mon Jan 29, 2007 9:36 pm

Wart wrote:recognising the symptoms of a stall and recovery from a stall were both required in my Flight Test.

As long as you have been instructed correctly they are nothing to fear and should be practised. Get your instructor to go through them with you until you are comnfortable then practise them with no pax.

Basically, off the power and push the bar forward attempting to keep the trike flying level. Once you feel the stall, bar back to neutral (gently, don't jerk it back) and at the same time power on. You will feel the recovery happening and once back in straight and level flight off the power to cruise. Any instructors please comment on this technique.
I tend to agree with Wart. I exercise this from time to time. But very important, always make sure you face INTO the wind!
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psg
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Stalls

Postby psg » Tue Jan 30, 2007 11:22 am

Just wandering why its so important to do stalls into the wind? If youre in a wind its your airspeed that is important? Well im not happy anyway the weather has been crap here in the U.K since october its blown away a hangar and a couple of planes and now that the weather is better i broke my arm! One day ill be back to see the sun again.

Sacha
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DieselFan
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Re: Stalls

Postby DieselFan » Tue Jan 30, 2007 1:23 pm

psg wrote:Just wandering why its so important to do stalls into the wind? If youre in a wind its your airspeed that is important? Well im not happy anyway the weather has been crap here in the U.K since october its blown away a hangar and a couple of planes and now that the weather is better i broke my arm! One day ill be back to see the sun again.

Sacha
Suck about your arm and wx u having!!

I would think a stall into the wind recovers faster and less height loss?
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Bacchus
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Postby Bacchus » Wed Jan 31, 2007 4:28 pm

Yip!
Less height loss and easier to recover. Remember, you're just exersizing the stall and after all it is a dangerous thing to play around with.
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Postby Fairy Flycatcher » Thu Feb 01, 2007 7:34 pm

Hi Guys/ Girls.

I think Larry's answer is just about the best.

A couple of things to add. Like John Young said. The point of teaching stalls is to prepare you for recovery from Low and Slow flight. Many people have had serious or fatal accidents, mostly in fixed wing, but also in trikes, when 'pushing the glide' to landing, rather than recognizing the symptoms of a stall, and recovering properly from it.

What you also have to take into consideration when discussing stalls, is that we fly washed-out wings. Which means that the 'stall speed' is a bit of a misnomer. The root of the wing will experience broken airflow before the tips. When the root of the wing is stalled, but more than half of the rest of the wing is still flying, the wing is said to 'parachute'. If you increase the angle of attack more, a greater area of the wing will have turbulent airflow over the top, this eventually causes the nose to drop

Have a look at Larry's mail again for recovery techniques. Depending on where in the process of a washed-out stall you are, the recovery is different. If it is just at the parachuting stage, then pulling the bar in slightly is sufficient, if your nose has already dropped, DO NOT pull in, as this can actually increase your ange of attack. It is important though, to anticipate the aircraft's recovery from its stall-induced dive, and pull in once your aircraft starts to recover to avoid a zooming climb which could then lead to a whip-stall.

A whip stall is a stall which occurs at the end of a steep climb, usually entered after a dive. It is not easy to inadvertently enter a whip-stall, but if this is one of your main fears, go to a school which teaches you recoverry from unusual attitudes, so that if you find yourself entering a nose-high stall, you have the experience to fly out of it though inducing a controlled bank.

We practice stall recovery into wind because of gust factor. Once you are in the air, you are flying the air, and not the ground, so the direction of the wind and its relationship with the ground is almost irrelevant. Except for gusts. The air is never static, and even on reasonably stable and calm days, the air higher up still has some gustiness to it. A gust is usually sudden, while the lull behind the gust is progressive. This means that when you start to enter a stall into wind, a gust will immediately increase your airspeed, which will lead to a gentler stall. If, however, the gust is from behind, you have a sudden loss of airspeed, and the stall can be more violent.
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Camell
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Postby Camell » Thu Feb 01, 2007 9:39 pm

Advice much appreciated :)

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