INITIAL GNC PERFORMANCE ON THE JUNO SPACECRAFT

摘要

Juno, part of the NASA New Frontiers Program, is a spin stabilized, solar- powered spacecraft launched on August 5th, 2011 and destined to arrive at Jupiter in July, 2016. The attitude determination sensors consist of two Stellar Reference Units, two Inertial Measurement Units, and two Spinning Sun Sensors. Attitude control is achieved through twelve one pound thrusters and one main engine, supplemented by a passive notation damper. The principal axis of the vehicle has been aligned to the High Gain Antenna boresight by actuating the solar panels. This paper will discuss the initial performance of the GN&C subsystem. The Juno spacecraft is managed by the Jet Propulsion Laboratory in Pasadena, California, and was built and is operated by Lockheed Martin Space Systems in Denver, Colorado.