Transcript Cube Satellite Design A senior design presentation by:

Cube Satellite Design
A senior design presentation by:
Raimundo Onetto
Holger Paas
Homero Perez
Problem Statement
Optimize cost of the
Mechanical Design in a
CubeSat.
Integrate several Engineering
Disciplines in one project.
Mechanical Engineering
aspects designed, tested and
programmed in conjunction
with FIU’s CubeSAT Team.
Provide a stable and safe
structure to support the
payloads of a CubeSat for
affordable research in the
future.
Satellite Architecture
Design Responsibilities
Structural Design
Thermal Analysis
Attitude Control & Determination System
Structural Design
Specification
Value
Length x Height x Width
10 x 10 x 10 (cm)
Weight
1 (kg)
Structural Materials
7075 or 6061-T6 (Al)
Center of Mass
Within 1” of Geometric Center
Rails Length
13.5 (cm)
Operating Speed
~7.5 (km/s)
Operating Altitude
700 (km)
Average Magnetic Field
30,000 (nT)
Vibration, stress, effective
shelving and access panel
design analysis and
optimization.
Structural Design Concepts
Different design
concepts analyzed.
Commercially
available parts,
manufacturing and
assembly.
Cost is the main
design constrain.
Thermal Analysis
Solar Flare
Extreme changes in
temperature occur as
the satellite revolves
around the earth.
Critical components in
the system are sensitive
temperature changes
and require an
independent heating or
cooling solution.
Copper Heat Sink
Attitude Control &
Determination
ACDS controls the pitch, yaw and roll of the satellite
based on the instant parameters the satellite is
experiencing.
Stabilizing the satellite is important for the
communications and integrity of the circuits.
ACDS Design Concepts
Determination:
Control:
Magnetometer.
Coils.
GPS.
Gyroscopes.
Accelerometers.
Passive magnets.
Sun Sensor.
Spin Stabilization.
Design Process
• Attitude vectorial analysis and design
• Space conditions analysis (thermal phases,
radiation, collisions)
• Structural prototyping and assembly of parts
Develop and debug attitude control and
determination program (written in C) for main
CPU (BeagleBoard)
• Run physical tests on components Collisions
testing environment Operating temperatures of
circuits tests Magnetic and accelerations testing
Final Analysis
A CubeSat needs all types
of engineering disciplines
working in a team.
The design of the ACDS,
thermal and structure
analysis must be done by
MEs.
Designing a test unit with
the appropriate parameters
to run tests on it is the next
step.
The End