NCAR staff members are presently working on identifying specific state parameter sensors to be routinely deployed on the GV for research. These sensors will be flown on the aircraft for each research flight and will provide critical standard measurements.

Detailed information on the various state parameter sensors that have already been selected for HIAPER can be found by consulting the GV Investigator's Handbook. Given below is a brief summary of these selected sensors and the measurements that each will provide:

Honeywell LASEREF III/IV Inertial Reference Unit (2 Units): Position (latitude and longitude), ground speed, aircraft attitude (pitch, roll, true heading, vertical velocity), altitude (pressure damped inertial, MSL)

Honeywell Model GNSSU 12 Channel GPS: Position, ground speed, altitude (global satellite, MSL)

Paroscientific Model 1000 Digiquartz Transducer (Several Units): Static pressure (ambient and cabin)

Mensor Series 6100 Differential Pressure Transducers (4) for Radome gust probe and heated pitot measurements.

HARCO Model 100990 De-iced TAT Sensors (2): Ambient air temperature (all weather)

Buck Research Model 1011C Dew Point Sensors (2): for tropospheric humidity reference measurements.

Inlets for gas and aerosol sampling: The HIAPER inlets and airflow sub-group is condsidering a variety of existing and/or proposed inlets for the first HIAPER flights as part of the standard instrumentation. This effort is being led by Dave Rogers at ATD/RAF and he is maintaining a website describing the candidate inlets. For more information see www.eol.ucar.edu/~dcrogers/HIAPER/Inlets/.

NCAR personnel are presently evaluating sensor possibilities for measurements of tropospheric and stratospheric humidity and other quantities (e.g., trace gases). More information on selected standard measurement instrumentation will be posted to this section of the HIAPER website as it becomes available.