Life Verification of the T5 Ion Extraction Grids for the GOCE Application

Details Life Verification of the T5 Ion Extraction Grids for the GOCE Application Life Verification of the T5 Ion Extraction Grids for the GOCE Application

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e..18e&link_type=abstract

Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sard

Physics

Scientific paper

The Gravity Field and Ocean Explorer (GOCE) is a mission for implementation in the 'Earth Explorer' line of ESA-Earth observation missions. The objective of the mission is to produce high-accuracy, high resolution, global measurements of the Earth's gravity field. During measurements an ion thruster system, based on the QinetiQ T5 thruster, will be used to provide drag free control of the satellite. To achieve the mission requirements the thruster system must be capable of continuous throttling over the thrust range 1 ° 20 mN at a resolution of 12 μN. The thruster lifetime requirement has been verified based on a 5000 hour endurance test, performed under flight representative throttling conditions, supported by extensive grid erosion modelling. Physical measurements of grid erosion were made during the endurance test at 500 hours, 1700 hours, and 5000 hours, and the results from these measurements have been used to validate the lifetime modelling. This paper will describe the endurance test, and will report the grid erosion measurement results. The grid erosion model will also be detailed, along with the results of the lifetime modelling and validation.

Affiliated with

Also associated with

No associations

Rating

Life Verification of the T5 Ion Extraction Grids for the GOCE Application does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Life Verification of the T5 Ion Extraction Grids for the GOCE Application, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Life Verification of the T5 Ion Extraction Grids for the GOCE Application will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-840441