Welcome Guest! To enable all features please try to register or login.
Options
View
Go to last post Go to first unread
Offline tl3  
#1 Posted : Monday, January 8, 2018 10:03:20 AM(UTC)
tl3

Rank: Advanced Member

Posts: 446

Thanks: 104 times
Was thanked: 328 time(s) in 150 post(s)
The 2018 Basic Judge's and Pilot's Guide is now posted: http://www.mini-iac.org/Downloads
Many thanks to Gary Hunt for donating his time and graphics wizardry to make this possible.
t
thanks 4 users thanked tl3 for this useful post.
rclad on 1/8/2018(UTC), Toby W. Silhavy on 1/8/2018(UTC), Dean Bird on 1/10/2018(UTC), JasonMcD on 3/31/2018(UTC)
Offline Michael Verzwyvelt  
#2 Posted : Monday, January 8, 2018 10:42:56 AM(UTC)
Michael Verzwyvelt

Rank: Advanced Member

Posts: 113
United States

Was thanked: 8 time(s) in 7 post(s)
This is such a valuable tool for people thinking of getting into IMAC and to people that are already flying, Well done! It takes a lot of valuable time and effort to put this type of presentation together. Than you both for being such a great asset to IMAC.
Michael Verzwyvelt
thanks 1 user thanked Michael Verzwyvelt for this useful post.
tl3 on 1/8/2018(UTC)
Offline rclad  
#3 Posted : Monday, January 8, 2018 12:40:16 PM(UTC)
rclad

Rank: Advanced Member

Posts: 223

Thanks: 125 times
Was thanked: 61 time(s) in 41 post(s)
Thanks, Ty.

The 2017 Basic Guide was a great help to me for all of my contests in Basic class. The only very small issue I had, which I didn't realize until the season was over, was some ambiguity in the guide to the 360 aerobatic turn, which led me to misinterpret this figure. I flew it incorrectly at every contest! Unless I'm reading the rules incorrectly, the roll has to occur before and after the turn is complete. This adds a bit more challenge, as the pilot basically has to enter knife edge flight - or close to it - while maintaining heading and altitude, and THEN start the turn. The same must happen on exit, only in reverse: complete the turn, THEN roll back to wings level. The Guide and Rules may be saying the same thing, but the wording is confusing:

2018 Basic Guide: "Turn begins and ends on a wings-level horizontal line." Should this be "Judging for the turn begins...."?

8.2.1: Turns.
In aerobatic competition, a turn is divided into three parts:
1: Establishing the bank using a roll on heading.
2: The turn itself.
3: A roll back to straight and level flight on heading.
Let’s look at the turn during each of these three parts. First, the roll
to establish the bank. This must be a roll of between 60 and 90
degrees; it must be performed on the entry heading; and the
aircraft must maintain a constant horizontal line. Once the roll is
completed and the angle of bank is established, the competitor
immediately performs the turn. The turn must maintain the
established angle of bank throughout. The aircraft must also
maintain horizontal flight. The rate of turn is constant throughout
and the maneuver must be wind corrected so that, for instance, a
360-degree turn will be a perfect circle. It should be noted that the
wind correction cannot be performed by visibly changing the bank
angle.
As soon as the aircraft is on the exit heading, the competitor
performs another roll at a rate equal to the entry roll. Again, the
aircraft must maintain a constant horizontal line.

Edited by user Monday, January 8, 2018 1:14:58 PM(UTC)  | Reason: Not specified

Greg Hladky
Flying on a wing and a purpose...
and physics, power, practice, preparation, plans...
and pioneers who pushed the envelope!
Offline tl3  
#4 Posted : Monday, January 8, 2018 2:12:00 PM(UTC)
tl3

Rank: Advanced Member

Posts: 446

Thanks: 104 times
Was thanked: 328 time(s) in 150 post(s)
Greg, you are absolutely correct, that is a little misleading. I have made a change that should make things a little clearer. Thanks
t
thanks 1 user thanked tl3 for this useful post.
rclad on 1/8/2018(UTC)
Offline Joe Layne  
#5 Posted : Monday, January 8, 2018 6:51:31 PM(UTC)
Joe Layne

Rank: Advanced Member

Posts: 171

Thanks: 38 times
Was thanked: 84 time(s) in 46 post(s)
Greg for your question "2018 Basic Guide: "Turn begins and ends on a wings-level horizontal line." Should this be "Judging for the turn begins...."?' If your referring to judging starts when the plane banks for the turn, this is correct only if it is the first figure in the sequence. I remember talking to you about this last year and I may have mislead you. The 360 was the first figure in the basic sequence last year, but not this year so scoring of the 360 degree turn will start one plane length after the previous figure. I can not remember you flying it incorrectly last year. I scored you very well on all your 360 turns. The only downgrades I remember were you gaining altitude near the exit of the turn.

Edited by user Monday, January 8, 2018 7:15:49 PM(UTC)  | Reason: Not specified

Offline rclad  
#6 Posted : Tuesday, January 9, 2018 11:26:59 AM(UTC)
rclad

Rank: Advanced Member

Posts: 223

Thanks: 125 times
Was thanked: 61 time(s) in 41 post(s)
Hi Joe. Your tip about the start of judging was right on the mark. No problem there. I misunderstood the 2017 Basic Guide to mean that the turn and roll began simultaneously, and that's how I flew it all of last year. I believe Matt Komar pointed out to me (at Regionals?) that the correct procedure was to roll first, THEN begin the turn. By that point I was stuck flying what I had practiced and didn't try flying it the correct way, accepting whatever deduction that mistake incurs. Thanks for the generous scores, Joe, but I probably deserved less for not flying it correctly. It may have been hard to see the difference, so no bad on you!
Greg Hladky
Flying on a wing and a purpose...
and physics, power, practice, preparation, plans...
and pioneers who pushed the envelope!
Offline rclad  
#7 Posted : Tuesday, January 9, 2018 11:38:03 AM(UTC)
rclad

Rank: Advanced Member

Posts: 223

Thanks: 125 times
Was thanked: 61 time(s) in 41 post(s)
The new 2018 Basic Guide makes the procedure for the 360 aerobatic turn very clear now. No ambiguity at all. Excellent! Thanks again, Ty.
Greg Hladky
Flying on a wing and a purpose...
and physics, power, practice, preparation, plans...
and pioneers who pushed the envelope!
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Notification

Icon
Error