Smart-actuated continuous moldline technology (CMT) mini wind tunnel test

Dale M. Pitt; James P. Dunne; Kevin J. Kilian

doi:10.1117/12.351576

9 July 1999 Smart-actuated continuous moldline technology (CMT) mini wind tunnel test

Dale M. Pitt, James P. Dunne, Kevin J. Kilian

Proceedings Volume 3674, Smart Structures and Materials 1999: Industrial and Commercial Applications of Smart Structures Technologies; (1999) https://doi.org/10.1117/12.351576
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

The Smart Aircraft and Marine Propulsion System Demonstration (SAMPSON) Program will culminate in two separate demonstrations of the application of Smart Materials and Structures technology. One demonstration will be for an aircraft application and the other for marine vehicles. The aircraft portion of the program will examine the application of smart materials to aircraft engine inlets which will deform the inlet in-flight in order to regulate the airflow rate into the engine. Continuous Moldline Technology (CMT), a load-bearing reinforced elastomer, will enable the use of smart materials in this application. The capabilities of CMT to withstand high-pressure subsonic and supersonic flows were tested in a sub-scale mini wind- tunnel. The fixture, used as the wind-tunnel test section, was designed to withstand pressure up to 100 psi. The top and bottom walls were 1-inch thick aluminum and the side walls were 1-inch thick LEXAN. High-pressure flow was introduced from the Boeing St. Louis poly-sonic wind tunnel supply line. CMT walls, mounted conformal to the upper and lower surfaces, were deflected inward to obtain a converging-diverging nozzle. The CMT walls were instrumented for vibration and deflection response. Schlieren photography was used to establish shock wave motion. Static pressure taps, embedded within one of the LEXAN walls, monitored pressure variation in the mini-wind tunnel. High mass flow in the exit region. This test documented the response of CMT technology in the presence of high subsonic flow and provided data to be used in the design of the SAMPSON Smart Inlet.

Citation Download Citation

Dale M. Pitt, James P. Dunne, and Kevin J. Kilian "Smart-actuated continuous moldline technology (CMT) mini wind tunnel test", Proc. SPIE 3674, Smart Structures and Materials 1999: Industrial and Commercial Applications of Smart Structures Technologies, (9 July 1999); https://doi.org/10.1117/12.351576

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KEYWORDS

Throat

Smart materials

Photography

Aluminum

Oceanography

Actuators

Aerodynamics

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