A Flight Determination of the Tolerable Range of Effective Dihedral on a Conventional Fighter Airplane
A Flight Determination of the Tolerable Range of Effective Dihedral on a Conventional Fighter Airplane

Author: Charles J. Liddell

Publisher:

Published: 1949

Total Pages: 32

ISBN-13:

DOWNLOAD EBOOK

A conventional fighter airplane was equipped with a special device for varying the effective dihedral in flight. A survey of pilot's opinions was made to determine which values of effective dihedral were intolerable. The relation between the findings and the present Air Force-Navy stability and control specifications is discussed.

Two-dimensional Compressible Flow in Centrifugal Compressors with Straight Blades
Two-dimensional Compressible Flow in Centrifugal Compressors with Straight Blades

Author: John D. Stanitz

Publisher:

Published: 1949

Total Pages: 712

ISBN-13:

DOWNLOAD EBOOK

Six numerical examples are presented for steady, two-dimensional, compressible, nonviscous flow in centrifugal compressors with straight blades. A seventh example is presented for incompressible flow. The solutions also applye to radial-flow turbines with rotation and flow direction reversed. The effects of variations in following parameters were investigated: (1) flow rate, (2) impeller-tip speed, (3) variation of passage height with radius, and (4) number of blades. The numerical results are presented in plots of the streamlines, constant Mach number lines, and constant pressure-ratio lines. Correlation equations are developed whereby the flow conditions in any impeller with straight blades can be determined for all operating conditions.