Hi Dwayne,
You are absolutely correct. If you are trimmed for a positive AOA (exactly the conditions we have when we are cruising around, typically) then when you roll the airplane, that 1g is no applied in a horizontal vector as well as vertical. (If your AOB is somewhere 1 and 89) So yes, you have a lift component because that is how your airplane is trimmed. Trim it for zero AOA and see what happens. I often fly that way so my stick forces are equal upside down and right side up. In that case, when I roll to 90 deg AOB, the plane doesn't go much of anywhere until I pull (or push) on the stick to generate a lift vector. What you described is right on, until you get to your last sentence.
The airplane simply starts going down because all the lift being created is no longer in the vertical, and unless you add some, the airplane loses to gravity. How do you propose the airplane is going to go straight down? The airplane is trimmed for an AOA and it will fly at that AOA until you change the trim. The airspeed and g's will continue to build and the spiral will continue until you roll out or the wings come off. This is exactly what often happens when a pilot accidentally enters inadvertent IMC and doesn't know how to fly instruments or isn't in an airplane equipped with the right instruments.
Jim
From: Dwayne
Sent: Monday, October 08, 2012 2:37 PM
Subject: Re: Light-Sport Aircraft Yahoo group Re: What makes an airplane turn?
| In reality in my plane (and the few others I've flown) if I bank left and don't apply power or pull the stick back the nose STILL does turn... What happens is that I go into a spiral descending turn. I guess there's still sufficent lift component on the vertical axis of the plane to pull the nose around. In straight and level flight, you MUST have some kind of lift in the elevator. You use the trim tab to compensate for this. Either that, your AOA on your wings have enough lift to override positive force on your elevator. When you turn, that lift is still there. causing your airplane to turn in the direction you are going. As you start slide into the fall, the lower wing gets less wind than the upper wing, causing you to turn more and spiral towards the earth. If you are heading straight down, you will not spiral anymore.
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