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Putnam, L. E.

Publications and source records attributed to Putnam, L. E..

30 records · Page 2
All sourcesNASA NTRSDOE OSTI
NASA NTRS1974

An analytical study of the effects of jets located more than one jet diameter above a wing at subsonic speeds

A procedure has been developed for calculating the effects of blowing two jets over a swept tapered wing at low subsonic speeds. The algorithm used is based on a vortex-lattice representation of the wing lifting surface and a line sink-source distribution to simulate the effects of the jet exhaust on the wing lift and drag. The method is limited to those cases in which the jet exhaust does not intersect or wash the wing. The predictions of this relatively simple procedure are in remarkably good agreement with experimentally measured interference lift and interference induced drag.

Putnam, L. E.↗
NASA NTRS1974

An analytical study of the effects of jets located more than one jet diameter above a wing at subsonic speeds

A procedure has been developed to calculate the effects of blowing two jets over a swept tapered wing at low subsonic speeds. The algorithm used is based on a vortex lattice representation of the wing lifting surface and a line sink-source distribution to simulate the effects of the jet exhaust on the wing lift and drag. The method is limited to those cases where the jet exhaust does not intersect or wash the wing. The predictions of this relatively simple procedure are in remarkably good agreement with experimentally measured interference lift and interference induced drag.

Putnam, L. E.↗
NASA NTRS1972

Aerodynamic characteristics of an ogee-wing space shuttle orbiter concept at a Mach number of 2.01

An investigation has been made at a Mach number of 2.01 to determine the effects of a flared rudder on the aerodynamic characteristics of an ogee-wing space-shuttle orbiter configuration. Also investigated were the effects of an upper-aft fuselage fairing for the orbital maneuvering system, elevon deflections, and rudder deflection on the aerodynamic characteristics of the configuration.

Putnam, L. E.↗