A dataset provided by the European Space Agency

URL ftp://npsa01.esac.esa.int/pub/mirror/CASSINI-HUYGENS/GCMS/HP-SSA-ACP-3-DESCENT-V1.0
DOI 10.5270/esa-pcmusm7
Abstract N/A
Description Data Set Overview = This data set is composed of data produced during the descent to Titan on January 14 2005 from the ACP instrument (Engineering data) and also from the GCMS instrument (Science data) which analyses the gaseous products from ACP. Only the channel B data is archived (no data has been recovered by Cassini on channel A). The raw data in binary format is not archived in this data set. It has been processed to calibrated (engineering) data by means of the transfer functions described in the ACP Software User Manual. This calibrated data is presented hereafter. The ACP engineering data: It includes all the temperatures, pressure, references voltages, DC/DC converter voltages, mechanisms position sensors, and is sorted in the four following data files : 1)ACP_OVEN_V1_0.LBL/ACP_OVEN_V1_0.TAB: Oven group parameters which monitor the heating and transfer phase performance including (columns title): UTC time, ACP internal sampling time, oven temperature, oven wall temperature,oven pressure, and electrovalves V1, V2, VT status. 2)ACP_PUMP_V1_0.LBL/ACP_PUMP_V1_0.TAB: Pump group parameters which monitor the pump performance including (columns title): UTC time, ACP internal sampling time, pump temperature, pump current, pump speed. 3)ACP_TEMP_V1_0.LBL/ACP_TEMP_V1_0.TAB: Temperatures group parameters including (columns title): UTC time, ACP internal sampling time, temperatures; electronics, base plate, cold junction, electrovalves VT & V2. 4)ACP_VOLT_V1_0.LBL/ACP_VOLT_V1_0.TAB: Voltages group parameters including (columns title): UTC time, ACP internal sampling time, DC/DC converter voltages (+ 5V , +15V , -15V), calibration & reference voltages (Rcal, RO, TCgnd, Vref1/2/3). The documentation includes the ACP EAICD, The GCMS EAICD, the ACP on board software user manual, the ACP & GCMS ESA SP-1177 publications, and the ACP & GCMS Nature publications. The ACP science data : The GCMS analyses samples f...
Instrument GCMS
Temporal Coverage 2005-01-14T09:11:01Z/2005-01-14T11:00:05Z
Version V1.0
Mission Description The majority of the text in this file was extracted from the Cassini Mission Plan Document, D. Seal, 2003. [JPLD-5564] The Cassini spacecraft, including the Huygens Probe, was launched on 15 October 1997 using a Titan IV/B launch vehicle with Solid Rocket Motor Upgrade (SRMU) strap-ons and a Centaur upper stage. The spacecraft used a 6.7-year Venus-Venus-Earth-Jupiter Gravity Assist (VVEJGA) trajectory to Saturn, during which cruise observations were conducted to check out, calibrate, and maintain the instruments as well as to perform limited science. After Saturn Orbit Insertion (SOI) (1 July 2004), the Huygens Probe separated and, on the third encounter with Titan, entered the satellite's atmosphere to make in situ measurements during an approximately 150 minute descent (14 January 2005). The Orbiter continued a tour of the Saturn system until mid-2008 collecting data on the planet and its satellites, rings, and environment. The Cassini Orbiter (CO) was a three-axis stabilized spacecraft equipped with one high gain antenna (HGA) and two low gain antennas (LGAs), three Radioisotope Thermoelectric Generators (RTGs) for power, main engines, attitude thrusters, and reaction wheels. It carried twelve orbiter instruments designed to carry out 27 diverse science investigations. The Huygens Probe (HP) was equipped with six instruments designed to study the atmosphere and surface of Titan. It entered the upper atmosphere protected by a heat shield, then deployed parachutes to descend slowly to the surface from an altitude of about 200 km. The instruments, with acronym and Principal Investigator (PI) or Team Leader (TL), are summarized below: Instrument Acronym PI/TL ----------------------------------------------- -----------Orbiter: Cassini Plasma Spectrometer CAPS Young Cosmic Dust Analyzer CDA Srama Composite Infrared Spectrometer CIRS Flasar Ion and Neutral Mass Spectrometer INMS Waite Imaging Science Subsystem ISS Porco...
Creator Contact {BRUN,JOHN HABERMAN}
Date Published 2006-07-15T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2006-07-15T00:00:00Z, HP-SSA-ACP-3-DESCENT, V1.0. https://doi.org/10.5270/esa-pcmusm7