Last contact: July 7, 2010 @ 14:37 GMT

We added a couple variables to the surface dialog so we can track glider changes and operating status.

We also noticed glider was calling in on IRIDIUM vs RUDICS so we changed it back and added some irid statistics diagnostics to the surface dialog as well.

Finally we changed cycle time to 30 s vs 60 s.

2630 5700 for 11:00 am 2/25/10

Tod

-----Original Message-----
From: Scott Glenn [mailto:glenn@marine.rutgers.edu]
Sent: Tuesday, May 25, 2010 5:46 AM
To: cook@marine.rutgers.edu
Subject: Cook New Waypoint: 2630N, 5700W.

Tod:
Here is the suggested waypoint for Cook.
It is 26 deg, 30 min North, 57 deg 00 min West.
The reasoning is described in the blog I just posted.
http://www.i-cool.org/?cat=77
I have not found any info on presently active moorings along 26.5 N.
I can have students look into this next week when they return.
Thanks.
Scott

Stats provided by Tod Patterson:

Cook has traveled 1232 km in 47 days.
Average speed: .30 m/s
Estimated transect time: 168 days (Oct 25)
Average current drain: .43 ah/day
Energy remaining: 710ah
Range: 43,000km
Pitch angle: 15 deg
Pitch fluid pumped: dive 25cc, climb -75cc
Thermal acc pres: 188 bar
Time below 10c: 130 minutes

Retask: 2630.00N -6000.00W

Fighting a current out of the west, so we won\'t make -6500.00W. We\'ve hit 2630.00N, which is where we want to be, so we\'re turning due east on this latitude line.

2010-05-10:

Current correction turned on.

Tod Patterson:

New goto with the correct latitude:
2630.00N
6500.00W

New mission file to servo the pitch to 15 deg

Patterson changed sbdlist.dat to include CTD upcasts in addition to the downcasts.

Glider still doing 4 yos.

Changed from 2 - 4 yos:

________________________________________
From: tpatterson@teledyne.com
Sent: Sunday, April 18, 2010 5:22 PM
To: John Kerfoot; cook@marine.rutgers.edu
Subject: [Cook] Cook doing 4 yo\'s

Hi all,
At 12:30 I loaded a new yo20 file, changing the # of half_cycles from 4 to 8 (argument: num_half_cycles_to_do = 8.000000 nodim), this will be 4 yo\'s and take about 16 hours.Should be up around 4:00am 4-19.

Tod

Tuning the pitch angle - Patterson:

Servoed the pitch at 15 deg to slow down in order to get a better charge but it thought
it was stalled and aborted. Today I\'ll try 22 deg.

Tod

Waypoint Suggestion via email:

Ok, sounds like a plan. I\'ll get the new waypoint in at the noon surfacing.
I\'m still tuning. I\'ve got the heading about as good as can be fling in low power mode. I\'m now
tuning the thermal engine. It seems that we\'re not getting a full thermal charge forcing the
charge pump to come on at the surface. The software looks at this pressure and if it\'s not above
the required(sensor: f_thermal_reqd_acc_pres(bar) 188) the pump comes to top it off before it will
dive. So I\'ve been reducing the required thermal accumulator pressure down in small increments
until the pump is not needed and the engine is able to supply the required accumulator pressure.
This pressure effects our buoyancy drive, the lower the pressure the less oil we have to change
the buoyancy. The good news is Cook has an accumulator capacity of 540cc, 140cc more than Drake.
I\'ll be done tomorrow and resume 4 yo flights.

Tod
-----Original Message-----
From: Scott Glenn [mailto:glenn@marine.rutgers.edu]
Sent: Thursday, April 15, 2010 4:32 AM
To: drake@marine.rutgers.edu; Tod Patterson; Doug Webb; John Kerfoot; Tina Haskins; Chip Haldeman;
David Aragon; asnow@eden.rutgers.edu; krichter@eden.rutgers.edu
Subject: Cook New Waypoint: 23 00 N, 60 50 W.

Good morning Tod:
We have a new waypoint to suggest for Cook.
We looked at the altimetry yesterday in class. and saw that our blue route from last week was not
as favorable this week due to the interaction of the two counterclockwise eddies between 22 N and
23 N.
Students from the class redefined a more favorable route and colored it green.
John\'s shift of the google altimetry image reveals a continuous meandering current to the east
along 26.5 N.
We\'d like to try for the green route up to this meandering current outlined in red.
The new waypoint to get us into the center of the next eddy is 23 00 N, 60 50 W.
its about 200 km away.
You can read details on the Thermal Glider Flight blog.
http://www.i-cool.org/?cat=75
Thanks
Scott

Retask:

Hi Scott,
Cook is now doing 4 yo\'s. He\'ll be up at 7pm, I\'ll send the new waypoint in for the 7pm surfacing.
Tod


________________________________________
From: Scott Glenn [glenn@marine.rutgers.edu]
Sent: Saturday, April 10, 2010 8:31 AM
To: drake@marine.rutgers.edu; Tod Patterson; Doug Webb; Tina Haskins; John Kerfoot; Chip Haldeman; David Aragon
Subject: Cook New Waypoint: 22 00 N, 60 30 W

Tod:
It looks like the currents are heading SW, which based on the altimetry
could mean that we are
too close to that southward flowing water to our north.
I would like to adjust Cook\'s path a little more to the east to shoot
for that northeast flowing
jet between the eddies.
I\'ve suggested the waypoint 22 00 N, 60 30 W.
If its fine with you, it can be adjusted whenever you choose.
Thanks
Scott