sscd sailing system for cubesat deorbiting · 2016. 12. 2. · 1 sscd sailing system for cubesat...
TRANSCRIPT
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1
SSCD
Sailing System for CubeSat Deorbiting
Author/Presenter: Federico Bernardi
4th UNISEC Global Meeting 20, October 2016 – Kamchia (Bulgary)
Co-author: Giorgio Vignali
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The project
• The designed SSDC (Sailing System for CubeSat Deorbiting) allows
the deorbiting of a CubeSat by exploiting the free and unused volume
offered by the standard solar panels without changing the nominal
configuration of main subsystems
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Main Constraints
• Maximum thickness of 7mm
• Low power
• Low weight
• High reliability
• Integration with other subsystem
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The core idea
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General Overview
• The SSDC system is
composed of four
“wings”. Each of them
increase the cross-
section of the satellite
of 0.36 m². totally the
system deploy a sail of
1.44 m²
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Orbit Parameters
• The DDC guidelines gives only two main constrains, one
about the CubeSat orbit parameters:
• Semi-major axis of 6930 km;
• Inclination of 97.6 degrees;
• Eccentricity equal to 0.002;
• R.A.A.N. of 30 degrees;
• Argument of Perigee of 210 degree;
• Mean Anomaly of 190 degree at the in orbit
insertion time.
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Orbital Decay Analisys
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The Mechanics
• Deployment system composed of:• 2 external bars (rotation of 90 deg)• 4 internal bars (rotation of 180 deg)
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The Mechanics
• Deployment system composed of:• 2 external bars (rotation of 90 deg)• 4 internal bars (rotation of 180 deg)
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Main Components: Structural Plate
• Aluminium
• 80x300x2.5 mm
• Face in front of
the CubeSat
structure
INTERNAL FACE
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Main Components: Structural Plate
• Aluminium
• 80x300x2.5 mm
• Two pockets for
the solar cells
EXTERNAL FACE
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Main Components: The Rods
• Aluminium
• 2 rods:
160x50x2mm
• 4 rods:
300x50x2 mm
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Main Components: Spring
• Armonic steel
• Maximum
thickness: 2mm
• Maximum
rotation angle:
180 deg
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Main Components: The sail
• Mylar
• Thickness:
190 μm
• Tensile strength:
190 MPa
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Mechanical connection
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The deployment
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The deployment
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The deployment
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The deployment
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First prototipe