English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

A 30-cm-diameter ring cusp ion thruster built as a flight spare unit for the DS1 mission was operated for over 30,352 hours to determine the ultimate service life capability of this thruster design. Post-test examinations indicate that molybdenum films up to 10 um in thickness were deposited inside the discharge chamber and that these films adhered well to the sputter containment mesh. The magnetic field internal to the engine was unchanged with respect to magnetic field measured prior to the start of the life test. Propellant isolators were destructively analyzed and test data validated that the isolators were performing properly at the end of the test.

An Evaluation of the Discharge Chamber of the 30,000 Hr Life Test of the Deep Space 1 Flight Spare Ion Engine