meetings - Space Flight Mechanics Committee

Motor Generator mission. The International Reference Ionosphere model generates the
plasma parameters for the current collection model.
14:30 AAS Planning and Execution of a Specialized Maneuver for the ARTEMIS
13-401 Mission: Achieving Three Goals with One Sequence
Jeffrey Marchese, UC Berkeley, Space Sciences Laboratory; Daniel Cosgrove, UC
Berkeley, Space Sciences Laboratory; Sabine Frey, UC Berkeley, Space Sciences
Laboratory; Manfred Bester, UC Berkeley, Space Sciences Laboratory
After Lunar orbit insertion (LOI) the ARTEMIS probes, designated P1 and P2, were in suboptimal
states with regard to attitude and spin-rate. We describe herein our project to design
and apply a maneuver sequence performed on P2 to simultaneously alter the spin-rate, the
attitude and the semi-major axis (SMA). The implementation of the maneuver sequence
resulted in the correction of the requisite parameters with significant fuel savings over
executing equivalent single-purposed maneuvers.
14:50 AAS A Scheme for Simplified Trajectory Design in Aero-Gravity Assist Using
13-498 Singular Orbits
Naoko Ogawa, Japan Aerospace Exploration Agency; Kazuhisa Fujita, Japan
Aerospace Exploration Agency; Jun'ichiro Kawaguchi, Japan Aerospace
Exploration Agency
15:10 Break
This paper describes a novel strategy for simplified trajectory design in aero-gravity assist
missions using one-rev singular orbits and iterative algorithms. One of difficulties in aerogravity
assist compared to usual swing-bys is that the extent of deceleration and the
periapsis altitude are coupled and dependent to each other. Thus we utilize one-revolution
singular orbits. One-rev orbits have a notable feature that there is a degree of freedom for
orbit design, which allows us to choose several coupled parameters independently in aerogravity
assists. Detailed iterative algorithms and an example trajectory are shown.
15:35 AAS Optical Navigation Capabilities for Deep Space Missions
13-443 Coralie Jackman, KinetX, Inc.; Philip Dumont, KinetX, Inc.
KinetX, Inc., a private corporation, is currently providing navigation for three NASA deep
space missions: MESSENGER, New Horizons, and OSIRIS-REx. Two of these, New
Horizons to the Pluto system, and OSIRIS-REx to the asteroid 1999RQ36, rely heavily on
optical navigation (OpNav) to insure mission success. KinetX developed OpNav software
uses spacecraft imaging to determine the spacecraft trajectory and targets’ ephemerides.
This paper describes the KinetX approach to optical navigation, simulating spacecraft
images for testing, processing real data, and generating products for orbit determination.
Also included are imaging simulations for New Horizons and OSIRIS-REx and real data
results
15:55 AAS Long-term Attitude and Orbit Prediction of Solar Sailing IKAROS While
23 rd AAS / AIAA Space Flight Mechanics Meeting Page 83