Rocket Transducer Group 1/3 Patrick Morgan Lance Yoneshige May 6, 2004 Instructor: Bruce Liebert University of Hawaii at Manoa ME 401

Design Assembly:

Design (Continued) Base:

Design (Continued) Beam:

Design (Continued)

Design (Continued)

Test Launch

Software Correction Attenuation Cut-off Frequency Use of “Fired” & “Unfired” data Cut-off Frequency Input & Output Cut-off Frequency determined to be 22 Hz for 99%; 9 Hz for 95%.

Results Harmonic Characteristics Fired Rocket Unfired Rocket f_n = 56 Hz z = 0.02 Unfired Rocket f_n = 45 Hz

Results (Continued)

Results (Continued)

Results (Continued) Error with 95% of signal: M(w_n) = 3.3% W = 9 Hz, z = 0.02

Questions? ? ?