Jacques raises some very important points for those of us flying
AAT's, and particularly using multiple start points.
It seems that removing the 'Arm Start' option has caused most of these
issues, and reinstating it would solve most of them.
Re point 1: 'Arm Start' needs to be reinstated
Re point 2: As Jax says, this is very undesirable behaviour.
Re point 3: Stretching my memory, but I think this was previously
available? If so, reinstating it would be good, but I could live
without it also.
Re point 4: Again , undesirable. 'Arm Start' reinstated would prevent
that I think.
Re point 5: I don't quite understand the issues Jax mentions here.
However I have only flown AAT's last year using V6.2.3 and the
optimisation worked quite well.
I would like to play and test this in a current version, however as
already reported in a Bug Report, the 'Target' button is not present
when there is no GPS signal (like in my study!).
This needs to be fixed.
Re point 6: Again, with V6.2.3, the optimisation worked quite well. I
didn't come home 15 minutes early, usually just over time as desired.
Re point 7: Obviously a bug; the chosen default start point diameter
(or any parameter) should apply to all SP's including alternates.
Regards, Bernie.
Quote: 'Jax'
Since V6 there has been many changes to the AAT tasks in XCSoar and it
is at
a point now where it is a quite difficult to use it for AAT and
particularly
multi startpoints AAT.
I'd like to share some behaviours of the current version 6.3.8 so
perhaps
people can express their wishes of how it should work and the
developers can
look into it.
I understand that multi starts AAT are not used everywhere but here in
Australia, unless it is a GP, in any given comp you will get an AAT
day and
most of the time it is with multiple starts.
1) We no longer can Arm the start, the task is armed from
the beginning
of the flight. This particularly annoying when waiting for the gate to
open
and fly in and out of the start sector, the task keeps starting and
re-starting.
2) If we select a SP via Next Startpoint button and enter
another SP
sector, then the target becomes the SP we just entered rather than the
one
we selected.
Here is a case where it is a real pain
We are in a comp and we are assigned 3 different SP SP1, SP2 and SP3.
Based on the wind and location we decide to start on SP1.
We select SP1 using "Next Starpoint" button.
While waiting for the start gate to be open then a cloud pops on SP2
and we
decide to go there.
When entering the SP2 sector the target start changes to SP2 which we
do not
want.
When leaving SP2 to go to SP1 the task starts and the target become
TP1.
We then need to select previous TP in XCSoar and cycle trough the SP
till we
have SP1 as target again.
3) There is no notification where we enter the starting
sector.
Obviously this makes us having to look at XCSoar more than desirable
at a
busy time when flying in close company of many other gliders.
4) If we fly through another SP after starting the task the
task
re-starts. Depending on our intention we should be able to prevent
that
behaviour.
5) The optimisation is not very flexible, either it picks
the point for
you which is generally not appropriate for an AAT or you pick the
point and
you have to time your turn ie what is XCSoar supposed to do for you.
What
would be nice is if we can give directions to XCSoar and it make picks
the
point for us, as an example give a heading and XCSoar adjusts how far
to go
in that heading.
6) In my experience the calculations for time are always
extremely
pessimistic, if I make my turn for and arrival at +5 minutes, I will
invariably be early.
7) When changing the diameter of the start point after
alternates have
been defined, the alternates do not change and the only way to change
them
is to delete them and re-create.
It would be good if we can have feedback from other pilots about how
they
think XCSoar should behave for AAT multi starts
Cheers
Jax
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