[NSRCA-dist7] Clarification on FAI maneuver 1

[Scott C]

I'll take a stab at answering all your questions..

Questions:
Where does the maneuver start?
*** As far as I am concerned, it better start when you call 'entering the box'. This, of course is not 'official', but if your wings are still finding level, and you are climbing and decending, it's not very good presentation for the judges, and I would take off something for this. I think officially it's something like 100' before you start to roll to KE... but one never knows when the roll will start, so level flight all the way from box entry is a good idea.

 At a point in the upright level flight before the knife edge that is equal to the length of the knife edge?
*** Upright level flight  is WAY MORE than the KE segment - not sure what you are asking here. 

Is that part of the level flight considered point 1? (NO)  - but this is an interesting point. If you actually plot out a 4-point roll, the last 'point' is level flight and it's equal to the length of the KE and inverted segements. However, this is not counted as a point because the CENTER of the 4-point is the center of inverted flight - this is where the Center defination comes in of N-1 where N is the number of points in a roll. So in a 4 point, the center is 4-1 = 3 segments, and at 1.5 segments (the center of inverted flight) is the center of the maneuver.


Is any level flight required before the full roll?
*** Of course, you are flying a square with rounded corners. There is level flight across the top and on the bottom (before the 2 of 4) before these rolls. I suppose in theory you could start an immediate slow roll after the 1/2 loop and make the slow roll the length of the diameter of the 1/2 loop, and this may be OK, but you will not see this.

Where does the maneuver end?  
*** It ends 100' after the completion of the 'square'. IF we define the start of the square, just when you cross the center line, the end is as you cross the center line again + 100 feet. (give or take)

Is there still a requirement to have level entry and exits as there was last time I read a rule book?
*** I think so.
sc


  Just a little curious.  Not enough to read a rule book.


  Jim O




  On May 2, 2008, at 7:44 AM, Derek Koopowitz wrote:

    The official description from the rule book is:

    Reverse Split S and Split S Combo, 2/4-pt roll first, full roll second, inverted exit.

    From upright, perform 2 points of a 4-pt roll, and push immediately to a half outside loop.  Perform a full
    roll, followed immediately by a half outside loop, to exit inverted.

    Judging notes:
    1.  The outside half loops must follow immediately after the 2/4-pt roll and roll.
    2.  The length of the upper horizontal line (including roll) is equal to the diameter of the half loops.  The geometric shape is that of a Double Immelmann.

    -----Original Message-----
    From: nsrca-dist7-bounces at lists.nsrca.org [mailto:nsrca-dist7-bounces at lists.nsrca.org] On Behalf Of Budd Engineering
    Sent: Friday, May 02, 2008 6:58 AM
    To: CA, AZ, HI, NV, UT
    Subject: Re: [NSRCA-dist7] Clarification on FAI maneuver 1

    Hi all,

    I'm pretty sure the following isn't correct (IIRC Jason and the Canucks corrected me on it at Phoenix), because the maneuver isn't a Double Immelman.  It's probably worth checking on though.

    "the lenght of the upper horizontal line (including roll) is equal tothe diameter of the half loops.
    The geometric shape is that of of a Double Immelmann."

    Thx, Jerry

    Budd Engineering
    jerry at buddengineering.com
    http://www.buddengineering.com


    On May 1, 2008, at 4:49 PM, Robert Gillespie wrote:

    > the lenght of the upper horizontal line (including roll) is equal
    > tothe diameter of the half loops.
    > The geometric shape is that of of a Double Immelmann.

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