A program to compute three-dimensional subsonic unsteady aerodynamic characteristics using the doublet lattice method, L216 (DUBFLEX) /
M. Richard and B.A. Harrison.

Description

Main Author

Richard, M.

Related Names

Harrison, B. A.
Langley Research Center.
Boeing Commercial Airplane Company.

Language(s)

English

Published

Washington, D.C. : National Aeronautics and Space Administration ; 1979.

Subjects

Aerodynamics.
Lifting bodies.
Flow charts.
CDC 6600 computer.
Slender bodies.
Lift devices.
Lattices (mathematics).
Input/output routines.
User manuals (computer programs).
Unsteady flow.
Systems engineering.
Subsonic speed.
Computer programs.
Aerodynamic characteristics.

Summary

The program input presented consists of configuration geometry, aerodynamic parameters, and modal data; output includes element geometry, pressure difference distributions, integrated aerodynamic coefficients, stability derivatives, generalized aerodynamic forces, and aerodynamic influence coefficient matrices. Optionally, modal data may be input on magnetic file (tape or disk), and certain geometric and aerodynamic output may be saved for subsequent use.--V. I. The information necessary for execution of the digital computer program L216 on the CDC 6600 is described. L216 characteristics are based on the doublet lattice method. Arbitrary aerodynamic configurations may be represented with combinations of nonplanar lifting surfaces composed of finite constant pressure panel elements, and axially summetric slender bodies composed of constant pressure line elements. Program input consists of configuration geometry, aerodynamic parameters, and modal data; output includes element geometry, pressure difference distributions, integrated aerodynamic coefficients, stability derivatives, generalized aerodynamic forces, and aerodynamic influence coefficient matrices. Optionally, modal data may be input on magnetic field (tape or disk), and certain geometric and aerodynamic output may be saved for subsequent use.--V. II.

Note

"NASA CR-2849"--V. I report documentation page; "NASA CR-2850"--V. II report documentation page.
Performing organization report numbers: D6-44458 and D6-44459.
"October 1979"--V. I cover; "September 1979"--V. II cover.
Also available online from the NASA Technical Reports Server (http://ntrs.nasa.gov/).

Physical Description

2 v. : ill. ; 27 cm.

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