Method for evaluating from shadow or Schlieren photographs the pressure drag in two-dimensional or axially symmetrical flow phenomena with detached shock

Antonio Ferri
naca-tn-1808
Feb 1949

A method has been developed for evaluating from shadow or schlieren photographs the pressure drag of axially symmetrical bodies at zero angle of attack or of two-dimensional bodies producing detached shock.

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http://naca.central.cranfield.ac.uk/reports/1949/naca-tn-1808.pdf