Acro Image

Aerobatics Server

ACRO E-mail Archive Thread: [Acro] Re: 2003 proposed Knowns

[International Aerobatic Club] [Communications] [Aerobatics Images]

Disclaimer: These aerobatics pages are developed by individual IAC members and do not represent official IAC policy or opinion.

[Usage Statistics]

ACRO E-mail Archive Thread: [Acro] Re: 2003 proposed Knowns


Thread: [Acro] Re: 2003 proposed Knowns

Message: [Acro] Re: 2003 proposed Knowns

Follow-Up To: ACRO Email list (for List Members only)

From: "joe durzo" <drdurzo at>

Date: Mon, 12 Aug 2002 23:55:57 UTC


I Vote for Brian,
Not only is he one of our best judges, he is an excellant pilot and 
instructor. He is also a very nice guy and certainly not a self promoter.
He will bring a lot to the job.
One other very good canidate is Phil Knight. Phil is not only one of the 
best pilots in the US he is probably the best coach that has english as his 
native language. Phil also work very hard and probably has too much on his 
table now as he is the CD for the WAC to be held in Lakeland next year.

>From: Steve Pennypacker <spenny at>
>Reply-To: "spenny at" <spenny at>
>To: "acro at" <acro at>
>Subject: [Acro] Re: 2003 proposed Knowns
>Date: Mon, 12 Aug 2002 17:11:20 -0400
>Folks, I think we've found the next author of the "Stick & Rudder" column 
>As if Brian doesn't already do enough for IAC.
>On Monday, August 12, 2002 4:10 PM, Brian Howard [SMTP:BK at] 
>: Frank,
>: >           FWIW, looking at the proposed Sportsman 2003 a bit closer.  
>: >figures 6, and 8 so similar as to be almost redundant?
>: To be sure, the initial pull to 45-degrees, half-roll and entrance to the
>: looping portion will be flown the same in both figures. The difference, 
>: course, is in the exit. In Figure 8 (reverse Half-Cuban), you release the
>: back pressure to end the loop at the 5/8th point with lots of energy and
>: maintain that energy into the full loop. Figure 6 (Goldfish) requires you
>: to maintain the round loop until the 3/4 point (remember the looping
>: portion in both figures should be wind-corrected to appear perfectly 
>: to the judges), set a nice 45-degree up line for the judges to study, and
>: then PUSH out to upright, horizontal flight with low energy. There is NO
>: requirement that the two 45-degree lines in Fig. 6 be the same length, so
>: you only have to draw the second line long enough to show the judges and 
>: achieve the energy level you want for entry into the Split-S (Fig. 7). 
>: will need rudder (right for Lycoming, left for Vedenev) as you push to
>: horizontal (the slower you are, the more rudder you'll need). Because
>: you'll be flying up a 45-degree line (P-factor) and finish slow and
>: therefore nose-high at the end of #6, you'll also find maintaining 
>: to be a challenge. In fact, you could be considerably off-heading and not
>: even realize it until you pull down for the Split-S. Heading control is
>: much less of an issue with #8 because once you come over the top of the
>: loop, you have the ground in sight throughout the remainder of the 
>: Timing the initial pull on both figures will be something you must work 
>: so you won't go out of the box during the looping portion. Fortunately,
>: there are only two figures on each entry line so positioning isn't too
>: critical. However, be careful not to initiate #8 too soon or you may have
>: trouble fitting #9 and #10 in the box (though any wind will help you with
>: that).
>: Bottom line: yes, the two figures are similar, but hardly redundant. Each
>: presents its own challenges and requires slightly different techniques.
>: Happy practice!
>: Best regards,
>: Brian Howard
>: Chairman, IAC Rules Committee

Join the world’s largest e-mail service with MSN Hotmail.


© Dr. Günther Eichhorn
Email Guenther Eichhorn