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

Rocket Transducer

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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. - PowerPoint PPT Presentation

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Page 1: Rocket Transducer

Rocket TransducerRocket Transducer

Group 1/3Group 1/3Patrick MorganPatrick Morgan

Lance YoneshigeLance Yoneshige

May 6, 2004May 6, 2004

Instructor: Bruce LiebertInstructor: Bruce LiebertUniversity of Hawaii at ManoaUniversity of Hawaii at Manoa

ME 401ME 401

Page 2: Rocket Transducer

DesignDesignAssembly:Assembly:

Page 3: Rocket Transducer

Design (Continued)Design (Continued) Base:Base:

Page 4: Rocket Transducer

Design (Continued)Design (Continued) Beam:Beam:

Page 5: Rocket Transducer

Design (Continued)Design (Continued)

Page 6: Rocket Transducer

Design (Continued)Design (Continued)

Page 7: Rocket Transducer

Test LaunchTest Launch

Page 8: Rocket Transducer

Software CorrectionSoftware Correction Attenuation Attenuation

Use of “Fired” & “Unfired” Use of “Fired” & “Unfired” datadata

Cut-off FrequencyCut-off Frequency Input & Output Cut-off Input & Output Cut-off

Frequency determined to be Frequency determined to be 22 Hz for 99%; 9 Hz for 95%.22 Hz for 99%; 9 Hz for 95%.

21

222

21

nn ff

ffA

Page 9: Rocket Transducer

ResultsResultsHarmonic CharacteristicsHarmonic Characteristics

Fired RocketFired Rocketf_n = 56 Hzf_n = 56 Hz = 0.02= 0.02

Unfired RocketUnfired Rocketf_n = 45 Hzf_n = 45 Hz = 0.02= 0.02

Page 10: Rocket Transducer

Results (Continued)Results (Continued)

Page 11: Rocket Transducer

Results (Continued)Results (Continued)

Page 12: Rocket Transducer

Results (Continued)Results (Continued) Error with 95% of signal: Error with 95% of signal:

M(M(__nn) = 3.3%) = 3.3%

2

1222

21

nnnM

Page 13: Rocket Transducer

Questions?Questions?