Emil J. Kremzier, Murray Dryer
naca-rm-e52b21
Apr 1952
Aerodynamic interference effects associated with a missile configuration, consisting of a pointed body of revolution with one or two ramjet engines strut-mounted in a vertical plane through the center line of the body, were investigated for several engine locations relative to the body and for a range of angles of attack from 0 to 10 degrees.
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http://naca.central.cranfield.ac.uk/reports/1952/naca-rm-e52b21.pdf