1. Small UAV CG ScaleCritical Design Review Chris Newton Sal Corrado

2. Design a system that: Determines location of CG Measures Weight of DBF plane Purpose

3. Accuracy: ±1oz. Display British/SI units Max weight of 25lbs/scale Overweight Protection Size: 4”x4”x2” System Requirements

4. 3-Scale system Controlled via LabView System Overview

5. Scale Design

6. Made of Lexan V-Groove (½ in) :Keeps location of wheel correct Top Plate

7. Made of Aluminum Fixed at left end Theoretical Dimensions: 2.5” in length, 0.5”wide, 0.125”thick 1/8” bending with 25lbf Overweight Protection Height will be slightly larger than maximum bending Strain Bar

8. Verify yield strength of aluminum available in shop Determine max deformation Results determine final dimension of strain bar Planned Instron Tests

9. Omega 350ΩPrecision Aluminum Strain Gage “Much better than 1oz” accuracy has been assured-Prof. Carlstrom Actual Accuracy will be verified Test a range of small weights on strain bar The Strain Gage

10. Inputs: X,Y location of each scale Outputs: CG location (X,Y) Total Weight LabView

11. Materials from Machine Shop “Recycled” Strain Gages Aluminum and Lexan for body $0.00 Strain Gages $0.00 Total Cost $0.00 Budget

12. Schedule

13. Project Status Completed In Process Finalization of parts Machining of parts Instron Tests DAQ Setup LabView Programming Solid Models Calculations for program Strain Gage type