NASA NTRS · 20060030592
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
Haw, R. J.. 2003-08-03. Approach navigation for a Neptune aerocapture orbiter. https://ntrs.nasa.gov/citations/20060030592
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
A proposed Neptune orbiter Aerocapture mission will use solar electric propulsion to send an orbiter to Neptune. Navigation feasibility of direct-entry aerocapture for orbit insertion at Neptune is shown. The navigation strategy baselines optical imaging and (delta)VLBI measurement in order to satisfy the flight system's atmosphere entry flight path angle, which is targeted to enter Neptune with an entry flight path angle of -11.6 . Error bars on the entry flight path angle of plus/minus0.55 (3(sigma)) are proposed. This requirement can be satisfied with a data cutoff 3.2 days prior to arrival. There is some margin in the arrival template to tighten (i.e. reduce) the entry corridor either by scheduling a data cutoff closer to Neptune or alternatively, reducing uncertainties by increasing the fidelity of the optical navigation camera.
The Galileo spacecraft reached Jupiter on December 8, 1995. During its six year voyage Galileo encountered six celestial bodies.