ACTIVE NOISE AND VIBRATION CONTROL FOR AUXILIARY PCWER UNITS

THE OBJECTIVE OF THIS PROJECT IS TO DETERMINE THE FEASIBILITY OF DEVELOPING CLASS 28 IO KW (12.5 EVA) AND 30 KW (37.5 KVA) AUXILIARY POWER UNITS THAT ARE LIGHTER THAN PRESENT M D INVENTORY WITH 120 VOLT A.C. - 3% AT 60 HZ AT A .8 POWER FACTOR THAT HAVE MAXIMUM NOISE LEVELS OF 7SDB (A) AT ONE METER OUTSIDE OF THE SHELTER AND SSDB (A) INSIDE THE HUMAN FACTORS COMPARTMENT. VIBRATIONAL OSCILLATION IS NOT TO EXCEED 2 FT/SEC 2 PEAK-TO-PEAK. THE OBJECTIVE WILL BE ACHIEVED BY USE OF TURBOCHARGED LIGHT WEIGHT DIESEL ENGINES WITH A 3600 RPM .8 POWER FACTOR DESIGNED ALTERNATOR FOR THE IO KW APU, AND AN 1800 RPM .8 POWER FACTOR DESIGNED ALTERNATOR FOR THE 30 KW APU. ALL MECHANICAL AND ELECTRONIC GEAR FOR VIBRATION AND SOUND CANCELLATION WILL BE INTEGRATED WITH COMPLEX SOFTWARE INTERFACED TO MECHANICAL ACTUATORS TO ACHIEVE THE OBJECTIVE SET FORTH ABOVE.