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From: steves@tektools.UUCP (steve shellans)
Newsgroups: net.aviation
Subject: spins
Message-ID: <401@tektools.UUCP>
Date: Fri, 30-Aug-85 12:54:41 EDT
Article-I.D.: tektools.401
Posted: Fri Aug 30 12:54:41 1985
Date-Received: Mon, 2-Sep-85 03:44:34 EDT
Organization: Tektronix, Beaverton OR
Lines: 39

A couple of years ago I was doing a lot of spins in a 152 (for fun).
The trouble is that the 152 is spin resistant, and half the time it
would just go into a spiral dive instead of a true spin.  At the time
I was using standard technique -- power at idle, ailerons neutral,
ease back on the yoke, as the plane is about to stall apply full rudder.

Then a read about a cross-control spin entry technique in a magazine.
I decided to try it.  (I *strongly* recommend that you do NOT try this.)
Here's how it goes: Full power, high nose-up angle (about 45 degress seems 
right.  As all pilots know, the plane will try to yaw left due to p-factor.
No right rudder is used -- instead, right *aileron* is used to counteract
the yaw.  Rudder remains neutral and, of course, the ball is over to 
the right.

Airspeed bleeds off to the point where a stall is imminent.  Then, while
still holding full power and right aileron, apply full left rudder.  Spin
entry is instantaneous and the rate of rotation is considerably higher
than I was accustomed to.  It was great.  Even after I pulled power off,
the high spin rate continued.

But then, a funny thing happened on the way to the ground. After about
4-5 turns, I applied standard spin recovery technique.  But instead of
recovering, it went into another spin mode which was nearly a flat spin.
The nose was pointed down about 30 degrees below the horizon and the
plane was still spinning.  Recovery was difficult.

I thought about it for a couple of days and decided to try it again to
see if it was a fluke.  No fluke.  Identical behavior.

There are 2 reasons I am posting this to the net:

  - With the recent rash of spin messages on the net, I wanted to alert
    you to the potential danger of this particular type of spin entry.

  - Does anyone know the aerodynamics of what happened?  Has anyone else
    been in a flat spin in a 152?  If so, what recovery technique did you use?

Steve Shellans
[ihnp4,allegra,decvax] !tektronix!tektools!steves