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Page Title:
Demonstration Data Report (cont) |
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| MIL-D-23222A(AS)
3.19.2.5
(Cont)
(8)
Quantative comparison of the results of dynamic
analysis for predicting time histories of loads
and motions for landing, takeoffs, and taxiing
shall be made with typical time histories of
loads and motions as measured in the tests of
3.7.2 and in the helicopter laboratory drop tests.
Where necessary for making these quantitative com-
parisons, additional dynamic analysis shall be
made for the initial conditions as measured in
the tests of 3.7.2, including build-up tests. The
analytical variation in the critical and in the
maximum loads and accelerations with initial con-
ditions shall be shown separately from the time
histories and shall be compared with the loads and
accelerations as measured in the demonstration
tests, including the build-up tests, extrapolated
if necessary, to the design envelope of conditions.
The foregoing comparison shall. be shown in relation
to the strength envelope of the helicopter, such
envelope to be determined by a combination of
analysis and static tests results. In addition,
these comparisons shall be summarized to show that
the helicopter has structural reliability for the
design envelope of conditions specified.
(9) Supplemental information to demonstrate by a com-
bination of test data and calculations that
successful shipboard operation can be reasonably
assured without airframe or helicopter configuration
changes other than those scheduled for incorpora-
tion in all helicopters.
(10) Quantitative test results and a discussion of the
methods used to determine the accuracy of the heli-
copter weapons systems, when applicable.
(11) Prior to each pre-NPE conference,a summary of the
data substantiating that the helicopter is aero-
dynamically, structurally, and functionally safe
througout the required flight envelope and scope
of the evaluation specified herein. All data
referenced in this summary (e.g. flying qualities,
vibration data, stress survey data) shall have
been submitted in the for review by the cognizant
personnel prior to the pre-NPE conference.
104
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