Mailing List lml@lancaironline.net Message #35577
From: terrence o'neill <troneill@charter.net>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Re: AOA
Date: Sun, 30 Apr 2006 19:30:29 -0400
To: <lml@lancaironline.net>
Dom,
You just have to try it.  That's how I learned... and haven't met many I could convey the realities to, with words.  Words are different for different folks.  I don;t knwo what a 'one shot glide approach is, or what John was really describing when he said 'sink rate'... If he was just losing altitude faster, then he needed to add power to get smore velocity to reduce his AOA to max L/D ... if he was flyign straight.  If he was in a bank, then roll out first.  The simplest thing is to have an indicater on which you can SEE your wing's AOA, and the mark on it that stands for stall.
T N211AL
----- Original Message -----
Sent: Sunday, April 30, 2006 12:51 PM
Subject: [LML] Re: AOA

Terrence – I enjoyed your treatise on the AOA and reason(s) for having it installed.

However, I would disagree slightly with your conclusion, and I am not pretending to be anymore expert than the average survivor of a long span civilian career now private aviator.

The description John used, quote: I see report after report of experienced pilots stalling out while pulling high g's low or trying to get to a runway after an engine failure by doing a very steep turn and not understanding what happens to sink rate if you do that” unquote, is, in my humble view, correct.

 The sink rate under that condition is the first effect of his example. I’ll bet the average pilot, with that condition, will react by way of more back stick which further approaches, or exceeds the critical angle.

Now, from basic, now forgotten training, the recovery from steep bank angle sink rates is to roll out and then apply pitch control. This should be instinctive. I realize easier said than remembered, especially if aiming for a one shot glide approach. But better to do that, than stall at an unrecoverable altitude.

I think it is fair to say that pilots who operate in a changing configuration, such as a one shot glide approach, once they commence reducing below the optimum L/D speed, should be increasing their awareness of STALL, and hopefully maintain the correct margins even if the aiming point is degraded.

I still say it would be great to have an AOA indicator, but I would still fly it as a useful tool, rather than a primary means if control.

Regards fellas,

Dom Crain

 

 

 

Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster