Atmospheric Gusts and Their Effect on Aircraft Page: 28
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with reference 1. The lower curve of figure rix is found
in reference 2. It should be noted that the occurrence of
a gust implies the occurrence of a gust cycle which is a
positive gust immediately followed by a negative gust of
like velocity.
The heavy curve of figure two through seven is chosen
for use in the gust analysis (5). On a comparative basis,
tbdee data are representative and are used to evaluate a
gust expectancy table which is presented as Table I.
Gust Analysis
The following assumptions are made for a gust analysis
of a specified aircraft.
1. It has been assumed that gust behavior is independent
of airplane weight or internal fuel distribution.
This would be a signficant factor in the case of a wing
having tip fuel pods or other forme of outboard fuel
storage. In such a case, the fuel loads would subtract
from the wing loads, making the structure more
susceptible to gust damage in the light-weight than in
the heavy-weight conditions. The mission would thus
have to be divided into portions having significantly
different fuel-weight configurations.
2. The ratio of wing loading to lift curve slope has been
assumed to be a constant, independent of altitude and
Mach number.
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Walling, Waunnetta Keene. Atmospheric Gusts and Their Effect on Aircraft, thesis, August 1958; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc108016/m1/34/?rotate=90: accessed July 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .