1. P07521 BRDF Imaging Platform
Detailed Design Review
23 Feb 2007

2. Team Members Rick Andol – Robotics/Motor Function
Kathryn Berens – Pan/Tilt Assembly
Will Casolara – Housing/Structure & Dome
Matthew Harris – Robotics/Controls
Robert Jaromin – Electronics/GPS System
Ross Strebig – Camera Stabilization & Interface

3. Project Mission
The mission of this student team is to develop a fully autonomous imaging platform for deployment on a range of vehicles, capable of imaging across a complete hemispherical field of view to measure a target's BRDF. Initial deployment vehicles include full-scale aircraft and ground based vehicles, while future vehicle platforms may include lighter-than-air vehicles and unmanned aerial vehicles. The module should be compatible with the mounting constraints typical of a "pico-satellite." The team must provide complete documentation of the analysis, design, manufacturing, fabrication, test, and evaluation of this platform to a level of detail that a subsequent team can build upon their work with no more than one week of background research.

4. Diagram

5. Video
TASE system

6. Specification Table

7. Mechanical Systems

8. Weight Calculations

9. Total Weight Middle Box: 431 grams Battery Box: 1191 grams
Computation Box: 320 grams
Total = 1942 g ~ 2 kg

10. Stress Calculations Calculations Performed on Glue Tensile
Bearing Stress
Vibration Mounts
U-Joint Tensile
Bolt Stress
Camera Bracket Tensile & Flexural
Motor Torque

11. ANSYS Analysis
Bracket Total Deflection
U-Joint Total Deflection

12. Field of View

13. Field of View Flight Elevation = 2000ft
Surface Distance From Target = 150ft
Max Tilt Error (aka “Bank” Angle) = 21o
Max Pan Error (aka “Dive” Angle) = 28o
Values will vary based on Elevation & Surface Distance from Target

14. U-Joint Calculations Under Load U-Joint Angle: 25º
Max angle due to shock travel: 25.4º
Housing dimension allowable swing: 19.3º

15. Bearing and Vibration Mount Analysis
Load on bearings is minimal
Use of plastic bearings will save system weight
Load is under .03 lb-ft for both bearings
Vibration washers will dampen unwanted movement and support system requirements
Rubber Washer Factor of Safety = 4
Material response = 25% at 4-6 PSI

16. Electrical Systems

17. Power Analysis

18. Concept Generation

20. BOM

21. New Developments Polycarbonate Impact Test No Crab Angle Adjustment
4lb Object
9ft Drop
109lbf at impact (35.85ft-lb Energy)
No Crab Angle Adjustment
Excel File For Flight Time With Pictures:
G:\Sr Design 1\Detailed Design Review\Pictures Required.xls

22. Future Work SD2 Week Plan Order Parts – Week 11
Budget for larger CF Card
Oil Weight Testing
UAV – Dome Dynamics
Lead Acid Battery for Cessna

23. Questions