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Bibliography of Documents Containing Numerical Data on Planar Lifting Surfaces

Progress from the strip method to lifting—surface theory, which is a significant step in the field of aero-
elasticity, has brought about a complete change in calculation procedures. The number of parameters necessary
to define the planform and the harmonic motion of a lifting surface is such that it prevents the setting up of
tables covering all cases, like the tables for two—dimensional coefficients. Because of this, the programmes
for aeroelasticity calculations must be associated with non-stationary aerodynamics programmes that calculate
the aerodynamic influence coefficients, in order to store them as soon as a new planform has been defined.
Under these conditions, it may seem strange to publish numerical results since they do not save the user the
trouble of performing the calculations. This may be the reason why there are few publications containing any
large number of numerical results presented in relation to parameters that are being systematically varied; most
authors generally confine themselves to the publication of partial results, which they compare with other data,
Thus, calculations like those that result in the publication of Reference (a) on page 3, which includes
results covering a fairly wide range of planforms and of calculated cases, appears to be unique.
These results, however, represent a real contribution, although they cannot be applied directly to flutter
calculations, since they are a collection of data which facilitate the choice of methods and the supervision of
programmes.
The results published outside this Manual are generally fragmentary and unsuited for systematic control, but
their whole nevertheless constitutes a great contribution (which should not be ignored) to the knowledge of non-
stationary aerodynamic forces. The number of planforms and calculated cases dealt with in other publications is
such that the results could not be included in the Manual, and it has therefore been necessary to restrict men-
tion of them to a bibliographical list.