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dc.contributor.advisorFuhs, A.E.
dc.contributor.authorCarey, Edwin Fenton, Jr.
dc.dateMarch 1976
dc.date.accessioned2012-04-25T22:38:37Z
dc.date.available2012-04-25T22:38:37Z
dc.date.issued1976-03
dc.identifier.urihttp://hdl.handle.net/10945/6689
dc.description.abstractAccording to the linearized solutions for thermal blooming, the density perturbations become infinite (i.e. "catastrophic" defocusing) as the Mach number approaches unity. However, the nonlinearities in the transonic equations cutoff the trend to infinity, and the values of the flow perturbation quantities are finite. The nonlinear equations with heat addition are transformed into simple linear algebraic equations through the specification of the streamline geometry in the heat release region. At a Mach number of unity, streamtube area variation was found to be directly proportional to the change in total temperature. A steady, two-dimensional mixed flow solution has been found for the transonic thermal blooming problem. The solution for the density perturbations within a laser beam at a Mach number of precisely unity is given. For a Gaussian beam with an intensity of 3.333xl0^7 watts/m^2 and an atmospheric absorption of 8.0xlO^-7 cm^-l the maximum fractional density perturbation is 1.028xlO^-6. The transonic thermal blooming problem does not pose as serious a problem as previously anticipated.en_US
dc.description.urihttp://archive.org/details/transonicrmalblo109456689
dc.format122 p.en_US
dc.language.isoen_US
dc.publisherNaval Postgraduate School, Monterey, Californiaen_US
dc.titleTransonic thermal bloomingen_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentDepartment of Aeronautics
dc.subject.authorTransonic thermal bloomingen_US
dc.subject.authorSubsonic thermal bloomingen_US
dc.subject.authorSupersonic thermal bloomingen_US
dc.subject.authorAtmospheric propagation of laser beamen_US
dc.subject.authorSonic flow with heat additionen_US
dc.subject.authorHigh energy laseren_US
dc.description.serviceLieutenant Commander, United States Navyen_US
etd.thesisdegree.namePh.D.en_US
etd.thesisdegree.levelDoctoralen_US
etd.thesisdegree.disciplineAeronautical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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