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Precise Formation-Flying Telescope in Target-Centric Orbit: the Solar Case View all abstracts by submitter

Pascal Saint-Hilaire   Submitted: 2020-09-24 09:50

We present the general concept of a telescope with optics and detectors mounted on two separate spacecrafts, in orbit around the telescope’s target (scopocentric or target-centric orbit), and using propulsion to maintain the Target-Optics-Detector alignment and Optics-Detector distance. Specifically, we study the case of such a telescope with the Sun as the target, orbiting at ∼1 AU. We present a simple differential acceleration budget for maintaining Target-Optics-Detector alignment and Optics-Detector distance, backed by simulations of the orbital dynamics, including solar radiation pressure and influence of the planets. Of prime interest are heliocentric orbits (such as Earth-trailing/leading orbits or Distant Retrograde Orbits), where thrust requirement to maintain formation is primarily in a single direction (either sun-ward or anti-sunward), can be quite minuscule (a few m/s/year), and preferably met by constant-thrust engines such as solar electric propulsion or even by solar sailing via simple extendable and/or orientable flaps or rudders.

Authors: Saint-Hilaire, Pascal; Marchese, Jeffrey E.
Projects: None

Publication Status: Journal of the Astronautical Sciences
Last Modified: 2020-09-28 12:25
Go to main E-Print page  Microwave Study of a Solar Circular Ribbon Flare  Propagation Effects in Quiet Sun Observations at Meter Wavelengths  Edit Entry  Download Preprint  Delete Entry 

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