Expendable Airlaunched Probes

AIRCRAFT EXPENDABLE OCEANOGRAPHIC INSTRUMENTS
AXCTD
AXSV
AXCP
AIRCRAFT EXPENDABLE CONDUCTIVITY,
TEMPERATURE, DEPTH PROFILER
AIRCRAFT EXPENDABLE
SOUND VELOCIMETER
AIRCRAFT EXPENDABLE
CURRENT PROFILER
Conduct oceanographic surveys
rapidly and economically with
Sippican's family of aircraft expendable
oceanographic instruments. Profiles of
conductivity, temperature, sound
velocity, and current velocity can be
collected from aircraft at altitudes of
up to 30,000 feet and launch speeds
of up to 250 knots.The complete
system consists of an expendable
instrument housed in an "A" size
sonobuoy, data acquisition system, RF
receiver and antenna.
SYSTEM DESCRIPTION
Sippican's Aircraft Expendable
Oceanographic Instruments utilize the
same probes as Sippican's Surface Ship
and Submarine Launched Profilers
which makes data intercomparisons
from multiple platforms accurate and
easy. On deployment from the aircraft,
the buoy descends via parachute to
the sea surface where the RF
transmitter is activated.After a 42
second delay, the surface buoy
releases the probe and data collection
begins.The data is transmitted on an
FM signal from the surface unit to the
RF receiver in the aircraft where the
data is processed and displayed using
Sippican's MK 12 and/or MK 10
Oceanographic Data Acquisition
Systems.The MK 12 accepts data from
the AXCTD and AXSV while the MK 10
is used exclusively with the AXCP.
Both systems are IBM PC compatible
and can be interfaced to the same
computer to minimize the amount of
equipment needed to be carried
aboard the aircraft. If real time data
processing is not required aboard the
aircraft, the FM signal from the
profiler can be recorded on audio
tape and replayed through the data
acquisition system back on the
ground.At the completion of data
transmission, the RF transmitter
disables and the surface buoy scuttles.
ocean systems division

Antenna
Float Housing
RF Transmitter
Probe Specific Signal
Conditioning PCB
ocean systems division
Probe
Release Plate
AXCTD
float assembly
AXCP
float assembly
An AXCTD profile
PROBE SPECIFICATIONS
PROBE PARAMETER DEPTH ACCURACY ACQUISITION
SYSTEM
AXCTD conductivity, temperature 1000 m -0.035 mS/cm,-0.035ºC MK 12
AXSV sound velocity 850 m -0.025 m/sec MK 12
AXCP current velocity, temperature 1500 m -1.0 cm/sec RMS,-0.2 ºC MK 10
778SI 2 98
7 Barnabas Road, Marion, MA 02738
TEL (508) 748-1160
FAX (508) 748-3626
EMAIL oceansys@sippican.com
WEB www.sippican.com
Sippican is an ISO-9001 Certified Company