[Bert vander Vecht]

Originally Posted by Bert vander Vecht
I am afraid the Aresti drawing raises some more questions.

1) The way the starting sequence is connected to the first manouvre means that you get a double displacement in depth shift towards the pilot. Shouldn't this be the other way round?
A:
The way it is drawn is correct.
Q: The optional left and right turns from the written sequence program will still allow the pilot to start manouver 2 at the far side?

2) In manouvre 2 the goldfish part is shown as inverted flight (Dashed line). How do you go from level flight to inverted flight with a 1/4 roll? Same question for the exit, how do you go from inverted flight to inverted flight with a 1/4 roll?,

A: Yes it shown as inverted only because the loop portion of the goldfish is down elevator or a sort of negative G. The model is on Knife Edge using elevator to go through the "Dead" fish. So how do you go from inverted to inverted with a 1/4 roll. You don't the model is coming from Knife edge to inverted. to end the figure in #2 This can't be drawn with Aresti so I did what I could to illustrate it. The written description, of the figure needs to used for you to understand it. Basically the model rolls 1/4 roll to knife edge flight and then pitches negative G to a 45deg crossbox line, performs 2.5 rolls to the opposite knife edge flight, then pushes 5/8 of a horizontal circle and the model is using down elevator.
Aaarrggghh, the return of the infamous 5/8 knifedge turn that leaves the rest of the program at an awkward 45 degr. angle to the centerline. Note to myself: Ask the next person 3/4 of a pie and return only 5/8 of a pie and see if that person notices the difference.
To avoid further confusion it may be best to use the correct Aresti symbol for knife edge flight. (Dot, dash. dot, dash, etc.)

3) Manouvre 4. the entry into the torque roll. A quarter knife edge loop or a knife edge harrier where the altitude of the C of G of the aircraft must not change. (Like the FAI torque roll entry from level flight in the F3p program.)
A:
This is a judging question you should direct to the chief judge. My opinion and is only my opinion, is that it should be judged the same as the Torque roll in the F3P sequence the kfife edge harrier rotates into a torque roll with minimal to zero vertical altitude change. But this decision will not be made by me. So check with the event director and chief judge.
As this is of equal importance to all competitors may I suggest the event director calls the chief judge and makes his answer known here?


4) Manouvre 6. The way the Aresti is drawn you are required to keep changing heading during the snap rolls. This implies an unstalled condition of the airplane and thus a zero for the snap?
A:
The snaps must be stalled this is not an F3A model, and the speed on an indoor model is much slower. For the circle to be round you are absolutely correct, so you must do the best you can and the pilot performing it the best will recieve the best score. All pilots must live with this problem and overcome it. Snap roll criteria will not be sacrificed in order to maintain the circle. The pilot must adapt, and overcome. Interesting, you are asking the pilots to cheat and the best cheater wins?


Manouvre 7. It is drawn as a horizontal level 3/4 eight. Is it a banked manouvre or a side slipped manouvre? The 1/4 and 3/4 rolls on entry and exit as well as the half roll in the middle do not seem to fit in with the Aresti drawing?
A:
Again the model is on knife edge. and the loop portions are using elevator. Look at the notes saying the figure is veiwed from above. See comment above about using correct Aresti symbols to indicate knife edge flight.



6) Manouvre 10. It is drawn as a manouvre with a level, upright, entry and exit. how does it fit between the previous and following manouvres that end and start with inverted flight?

A: Yes it is drawn with a level upright entry and exit and should be inverted. This will be corrected on Rev1-2. This figure is also drawn from above and is a 90deg flat turn, on the cross box element 1 roll-1 opposite roll, then another 90 deg flat turn no bank. Thanks for the explanation.





It is not my intention to offend anyone with my line of questioning. I know it is very hard to write a flight sequence in such a way that it can only be understood in one way.

You have invited a kid, Derk van der Vecht, and I am helping him to decide if this event is worth spending all his savings on to get him and his planes across the Atlantic.

The lack of a well defined known sequence and the absence of the promised personal invitation seem to indicate that this is more of a "fun" type event.
While there is nothing wrong with fun type events, Derk is more interested in serious competitions, which do not need to exclude having fun.

Yours sincerely
Bert van der Vecht.