Preliminary review of active control technology applied to the fairing acoustic problem

Future launch vehicle payload fairings will be manufactured from advanced lightweight composite materials. The loss of distributed mass causes a significant increase in the internal acoustic environment, causing a severe threat to the payload. A description of the source and the characteristics of the disturbance are presented along with the present solutions used to combat the problem. Active control technology is currently being investigated as a potential solution. Several active control actuator types are investigated for the fairing problem, including: acoustical control sources, point forces, magnetostrictive materials, smart materials, electrostrictive materials, and piezoelectric materials. The main advantages and drawbacks of each of these actuator types for the payload fairing acoustical problem is presented. (Author)

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