Transcript Mechanical Structures

Student Satellite Project
University of Arizona
Student Satellite Project
The MSA Team
• Team Mentor - Dr. Weinong “Wayne” Chen
• Team Members •
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Christiano Abadi - SIE
Will Betush - MSE
Patricia Chapman - AME
Yinka Joan - AME
Mayumi Mueda - AME
Chris Salmon - AME
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Oszkar Bajko - AME
Autumn Carter - AME
Ryan Hartman - AME
Jacob Lauser - EE
William Null - AME
University of Arizona
Student Satellite Project
MSA’s Job Description
Design, Fabricate, and Analyze a Structure
that will Support and protect the Payload
during launch and it’s stay on orbit
– Space Allocation of All Teams’ Components
– Data/Power Cable Routing
EDUCATE and TRAIN STUDENTS
– Programs and Techniques used in Industry
– Hands-on Experience
University of Arizona
Student Satellite Project
Initial Criteria
Volume and Mass Constraints
– Hitch-Hiker Specifications
As close to mass limit as possible to maximize orbital life-time
Try to maximize available volume
Constraints Imposed by Other Sub-Systems
– Science (Thermal Expansion)
– G.N.C. (Bending/Stiffness)
– Other Teams (Operating Temperature)
University of Arizona
Student Satellite Project
Hitch-Hiker Specifications
Maximum spacecraft weight
68 kg
Maximum spacecraft height
52 cm
Maximum spacecraft diameter
48 cm
Canister inside diameter
50 cm
Maximum CG location
1.27 cm
Maximum CG location
26 cm
Ejection Velocity
0.6 - 1.2 mps
To Be Determined
150 lb
20.5 in
19 in
20 in
0.5 in
10.25 in
2 - 4 fps
Maximum rotational impulse
Minimum payload resonant frequency
University of Arizona
Student Satellite Project
Hitchhiker Canister
University of Arizona
Student Satellite Project
Component/
Subsystem
Digital Electronics
Analog Electronics
Batteries
Infrared Detectors
Reaction Wheels, motors
Solar Panels
Operating
Temperature
°C
Survival
Temperature
ºC
0 , 50
0 , 40
10 , 20
-269 , -173
0 , 50
-100 , 125
-20 , 70
-20 , 70
0 , 35
-269 , 35
-20 , 70
-100 , 125
University of Arizona
Student Satellite Project
Height:
18.375 in.
Diagonal:
19.00 in.
Target Mass (Structure Only):6~9 kg
University of Arizona
Student Satellite Project
Analysis
Dynamics and Loads
Predict natural frequencies, modes, damping
Predict responces to forces and vibrations as function
of time
Stress
Predict member loads and stresses to withstand
Strength: single load
Life: cyclic and sustained loading
Thermal
Predict temperatures
University of Arizona
Student Satellite Project
Analysis (continued)
Thermoelastics
Predict thermal distortions and stresses
Mass properties
Predict mass, center of mass, moments of inertia
Probability and Statistics
Estimate likelihood of specific events from test data
Determine cause and effect relationships from test
data
Failure
Identify likely causes of mechanical failures
University of Arizona
Student Satellite Project
University of Arizona
Student Satellite Project
Exploded View
(For Educational Purposes Only)
University of Arizona
Student Satellite Project
Contact Information
• http://uasat.arizona.edu/msa
• Team Leader - Bill Null
• [email protected]
- Team Meetings are held every Monday at 3:15 pm
in the Aerospace & Mechanical Engineering (AME)
courtyard.
University of Arizona