Hello all,

I have what may be a dumb question.
Can someone explain the 180 turn in basic.
Is the answer as easy as making a turn without gaining or losing altitude? Or is there more to it?
Thanks

Must be banked 60 degrees and STAY at 60. Do not gain altitude, and do not lose any as you said. The trick is to fly slow and/or make the turn large to a certain extent. Slow is better than large IMO. This is harder to do than it looks !!

That being said, back when I was flying basic, there were no aerobatic turns so I have never been judged on that...

The bank has to be at least 60 and can be up to, and including 90 degrees.

Sorry, my bad [&o]...

I would stay away from 90 degrees though .

I you try to make the turn too large, a good judge will pick up on the fact that the airplane is slipping around the turn and dock points. Remember to establish the bank before starting the turn.

Thanks guys.
So a slow KE 180 would be OK?
Now that I have a big plane I want to practice some precision. The problem is no one in my club or around the area (that I know of) flies comp.
Hopefully I can make it to Muncie this year to see how it is done and talk to some pilots.

Eric,

Here is a page with the 2005 Sequences being flown.

http://extremeflightyak.shutupandfly...mac_videos.htm

Let's make this simple. DIRECTLY from the IMAC rules:

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.

Downgrades:
a) The angle of bank established by the initial rolling maneuver
must be at least 60 degrees. Any less is a one (1) point deduction
for every ten (10) degrees.
b) The angle of bank, once established, must remain constant. Any
deviation is a one (1) point deduction for every ten (10) degrees
of deviation.
c) The rate of roll must be the same for the entry and exit rolls of
this figure. Any deviation is a one (1) point deduction.
d) The aircraft must maintain a constant altitude throughout the
figure. Any variation would be one (1) point for every ten (10)
degrees of change.
e) The rate of turn must remain constant. Any change would be
not more than a one (1) point deduction for each change. Note
that the rate of turn may appear to change in a strong wind,
when it really isn’t changing. The judges must always keep the
wind in mind and give the pilot the benefit of the doubt if there
is any question.
f) The aircraft must begin and end on the prescribed heading. Any
deviation is a one (1) point deduction for every ten (10) degrees
of deviation.

I am unaware of any downgrades for this. See my post above for ALL the applicable downgrades for this figure.


Correct

Thanks Aresti and the rest.
Sure wish I had gents like you all around here to teach me how to setup a plane proper and fly straight.

It is allowed to slip (augumentive wording) the plane through the turn. Aircraft are judged on where the 3 axis C.G. is heading

This manuever is tougher than it seems. A 60 degree bank will get you quite far on your side so the size of the half cricle is not going to be all that large. The mistake I see most guys make is the roll rate for entry is usually done at a nice slow roll rate and the exit roll to straight and level is usually quicker. Doesn't matter has fast it is as long as it's the same rate. The other mistake I usually see is not getting the plane at a 60-90 degree rate of bank. Most guys go to a 45 and then a slight bit more, probably a 50-55 degree bank. Get yourself a protractor and hold it at eye level. 60 degrees is really quite a bank.

......Mark

Slyder,

My name is Ken McGuire. I live in Cincinnati and fly with Will Berninger at the Aeromodelers field just west of Cincinnati outside of Harrison. Will and I are both very actively involved in IMAC and fly in the Unlimited class. We are usually out there a couple of nights every week and on weekends when there is no contest nearby. Shoot me an email and come out sometime. We'd love to have you.

Ken

Ken, I will try to as well! I'm moving (at least temporarily) to the Cincinnati area this weekend.

Ken and Ryan,

You guys will get to meet eachother this weekend in Clinton.

And you will be flying Unknowns (Int/Adv/Unl) supplied by a couple of evil sequence writers!!!![sm=spinnyeyes.gif]

Have fun!!!

If we fly at all.......

Weather looks like crap.

[sm=thumbup.gif] Some of the most fun times I've had in IMAC had nothing to do with flying anyway [8D]

I thought the maneuver was hard until I tried it. It is pretty easy. Maybe that is why the K factor is only 4. Not alot of points there. In basic, you will be killed more on the lines between figures before this one hurts that bad I think.

weather.com is saying mostly cloudy and dry saturday and sunday. Lookin forward to gettin started back up this year.

Gary H

Thanks Ken.
I will try to do that. Depending on what these gas prices will do this summer.
When he wife gets home I will check the map and see just where Harrison is at.