NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 1 of 1
Thruster-Specific Force Estimation and Trending of Cassini Hydrazine Thrusters at Saturn
External Online Source: hdl:2014/45912
Author and Affiliation:
Stupik, Joan(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Burk, Thomas A.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Abstract: The Cassini spacecraft has been in orbit around Saturn since 2004 and has since been approved for both a first and second extended mission. As hardware reaches and exceeds its documented life expectancy, it becomes vital to closely monitor hardware performance. The performance of the 1-N hydrazine attitude control thrusters is especially important to study, because the spacecraft is currently operating on the back-up thruster branch. Early identification of hardware degradation allows more time to develop mitigation strategies. There is no direct measure of an individual thruster's thrust magnitude, but these values can be estimated by post-processing spacecraft telemetry. This paper develops an algorithm to calculate the individual thrust magnitudes using Euler's equation. The algorithm correctly shows the known degradation in the first thruster branch, validating the approach. Results for the current thruster branch show nominal performance as of August, 2015.
Publication Date: Jan 04, 2016
Document ID:
20170008279
(Acquired Sep 11, 2017)
Subject Category: ASTRODYNAMICS; SPACECRAFT PROPULSION AND POWER
Document Type: Conference Paper
Publication Information: (SEE 20170008305)
Meeting Information: AIAA SciTech 2016; 4-6 Jan. 2016; San Diego, CA; United States
Meeting Sponsor: American Inst. of Aeronautics and Astronautics; Reston, VA, United States
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 11p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: CASSINI MISSION; ATTITUDE CONTROL; HYDRAZINES; SPACECRAFT PROPULSION; SPACE PROBES; SPACECRAFT CONTROL; TELEMETRY; POSITION (LOCATION); TORQUE
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: September 11, 2017
Contact Us