Control of airflow about a high energy laser turret.

dc.contributor.advisorFuhs, Allen E.
dc.contributor.authorMandigo, Alan Michael
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentAeronautics
dc.contributor.secondreaderGawain, T.H.
dc.dateDecember 1980
dc.date.accessioned2012-11-16T21:00:52Z
dc.date.available2012-11-16T21:00:52Z
dc.date.issued1980-12
dc.description.abstractA high energy laser system inflicts damage on a target by radiating large amounts of thermal energy onto a small area. Airflow about the laser turret, which is located on top of the aircraft fuselage, is unsteady and causes problems in beam control. The problems are jitter, which is vibration of the laser beam, and optical path distortions. The theory of flow around a cylinder and around a sphere was examined, and several airflow control techniques were screened in an effort to suppress the unsteadiness of the flow. A fairing and turret base suction apparatus was selected and experimentally tested in a wind tunnel. During the course of the experiments several parameters were varied as follows: blower flow rate, spacing between turret and fairing nosepiece, and flow rate in five separate ducts. Results of the tests indicate that the fairing and base suction technique eliminates the unsteadiness. Further research and testing are required to develop the technique for actual use on aircraft.
dc.description.distributionstatementApproved for public release; distribution is unlimited.
dc.description.funderAir Force Weapons Laboratory
dc.description.serviceLieutenant, United States Navy
dc.description.sponsorshipAir Force Weapons Laboratory
dc.description.urihttp://archive.org/details/controlofirflowb1094518942
dc.identifier.npsreportNPS 67-80-019
dc.identifier.urihttps://hdl.handle.net/10945/18942
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
dc.subject.authorlaser
dc.subject.authorbeam control
dc.subject.authorjitter
dc.subject.authorlaser turret
dc.subject.authorflow control
dc.subject.authoroptical path distortion
dc.subject.lcshAeronauticsen_US
dc.titleControl of airflow about a high energy laser turret.en_US
dc.typeThesisen_US
dspace.entity.typePublication
etd.thesisdegree.disciplineEngineering Scienceen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.nameM.S. in Engineering Scienceen_US
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