[F3A-Discussion] New FAI Rule Changes

[Chad Northeast]

Just for fun I asked chatGPT to define "three dimensional velocity", this
was the result.  I am not sure how this is possible to fly in a 2
dimensional plane and have three dimensional constant speed lol.

Three-dimensional velocity refers to the rate of change of an object's
position in three-dimensional space with respect to time. In other words,
it describes how fast and in which direction an object is moving in three
dimensions.

Three-dimensional velocity has three components: velocity in the
x-direction, velocity in the y-direction, and velocity in the z-direction.
These components can be represented as a vector quantity, where the
magnitude of the vector represents the speed of the object, and the
direction of the vector represents the direction of motion.

For example, a plane flying at a speed of 500 miles per hour in a
northwesterly direction at an altitude of 30,000 feet has a
three-dimensional velocity of 500 mph northwesterly in the x-y plane, and 0
mph in the z-direction.

On Wed, 5 Apr 2023 at 09:58, Mark Atwood via F3A-discussion <
f3a-discussion at lists.nsrca.org> wrote:

> Hey All,
>
> Attached are the results from the CIAM plenary meeting and vote that took
> place on April 1st.  These rule changes will go into effect in 2024.  Most
> of the rules that address F3A are minor and merely clarify clerical issues
> in the rulebook or help outline procedures.  There are also changes to the
> wording around telemetry, but again, only for better clarity. But there are
> TWO notable rule changes.  Neither of which we supported.
>
> 1) Increase the weight limit to 5.5Kg TAKE OFF WEIGHT.   This is a
> straight up increase for electric, and a change to weighing procedure for
> glow planes to include FULL tank of fuel.   The issues here are obvious and
> I know we have many on both sides of this discussion, but it’s the new rule
> in FAI.
>
> 2) This one confounds me.   They have changed the judging guidelines, such
> that they no longer want accurate geometry relative to the aircrafts plane
> of flight, but instead want geometric accuracy FROM THE JUDGES
> PERSPECITVE.    In other words, a half loop at the end of the box needs to
> LOOK round, rather than BE round relative to the plane of flight.   It
> completely changes our way of flying and makes tools like flight coach
> useless.
>
> Personally, I can’t imagine this will last, and more over I can’t imagine
> this will actually be used.  A few of us (US/ UK / AUS) fought hard against
> it, but in the end it won out.  They had no explanation as to how cross box
> maneuvers will accomplish this (such as a rolling circle) but insisted this
> is what was wanted.  I’m sure there will be much discussion at events prior
> to this going into effect.
>
> There were also some minor changes for how ties are handled and better
> language and procedure for handling smaller championship events (<40
> pilots). But most of that is benign.
>
>
> F3A Starts on page 25
>
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