Non-Contact, 3-D Measurement for Aircraft Surfaces

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: F42650-03-P-2755
Agency Tracking Number: F031-3780
Amount: $99,748.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
3475 Edison Way, Bldg P, Menlo Park, CA, 94025
DUNS: 809641533
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Robert Clark
 (650) 369-6782
Business Contact
 Robert Clark
Title: President
Phone: (650) 369-6782
Research Institution
A shape capture system for field and industrial capture of surface contours and discontinuous shapes is proposed. The system will provide accuracy of 0.01 inch or better at over 1 million points distributed over a region 100 inches across from three ormore images obtained with a high resolution handheld digital camera. A tripod or bench mounted projector projects a pattern onto the surface from which the point positions can be derived. This can be moved to allow capture of different overlapping areaswhich can be combined into a single surface representation. The working envelope of the system is from less than 50 inches to beyond 200 inches, with accuracy proportional to the distance from the projector to the surface. Immediate feedback to theoperator will ensure that all necessary regions are captured and resolved. Deviations from design specifications in new airframe construction and repair of existing airframes can have a significant effect on aircraft performance. Today's techniques ofboundary layer control, closed-loop aerodynamic stability, and very wide flight envelopes require exact conformance to CAD models if aircraft are to perform as designed. All types of aircraft from supersonic military craft to competition sailplanes cansuffer consequences ranging from slight performance impairment to destructive high-speed flutter if aerodynamic surfaces are incorrectly contoured or finished. The proposed measurement system will provide interactive information to repair and qualitycontrol personnel about the contour and smoothness of aircraft skins. This can be used to check final shape and to guide workers in shaping the surfaces.

* information listed above is at the time of submission.

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