[NSRCA-discussion] F17 barrel roll

[Jas]

So you'll make a video of a few of them so we can see it :)

Sent from my iP

> On Aug 26, 2015, at 4:54 PM, John Gayer via NSRCA-discussion <nsrca-discussion at lists.nsrca.org> wrote:
> 
> You start with an attitude of 45 degrees nose up. You are going to fly on the surface of a tube with the main axis horizontal as shown in the powerpoint and the starting point at the side of the tube. In order to do a single roll on the surface of the tube, you will be in level flight knifeedge at the top of the tube, continuing on around to the far side of the tube you will now be pitched down at 45 degrees to maintain your position on the surface of the tube. Continuing on around, when you reach the bottom, you will once again be level flight knife edge. One more quadrant of rolling and you will once again be at the starting point on the tube but displaced forward and once again at 45 degrees up attitude.
> If you pitch to 45 as specified, put in aileron for a slow roll and add some elevator and hold them, this will all happen automatically. Try it. The amount of  aileron and elevator plus the relationship between them will define the size of the tube. The spiral pitch is defined by the initial entry angle of 45 degrees.
> 
> Go out and try it. It's easier to do than to judge. And it's really a stupid maneuver.