Quadrupoles in potential flow: two model problems (Q3657649)

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Quadrupoles in potential flow: two model problems
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    Quadrupoles in potential flow: two model problems (English)
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    1982
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    acoustic analogy
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    helicopter and propeller blades
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    sound-generating mechanism
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    blade slap
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    model problems involving moving surfaces with shocks
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    one-dimensional
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    piston problem
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    two-dimensional
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    wedge moving supersonically with plane attached shock
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    Ffowcs Williams-Hawkins formulation
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    monopole, dipole and quadrupole sources
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    phase-shifting device
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