MIL-W-3947B
3.4.2.11 Appendixes to Actual Weight and Balance Reports. These
appendixes shall reflect all modifications subsequent to the actual
weighing and prior to delivery. The data shall include a detailed
tabulation of modifications made in the above specified period including
their effect on the actual and guaranteed weight and balance and the
contractor responsibility under or overweight.
3.4.2.12 Sectionalized Weight Data. When the Vehicle is sectionalized
for shipping and handling, the following data shall be furnished:
A tabulation by sections of structure and all items of equipment
therein including weights, arms and moments (longitudinal, vertical and
lateral). Equipment not included in the above shall be listed under a
"miscellaneous" item to arrive at the total weight and moment of each
section as prepared for shipping or handling.
3.4.2.13 Status Reports (MIL-STD-176 Part III) Fill in as required
(See paragraph 5.1.3 of MIL-STD-176)
3.4.2.14 Substantiating Data. These data shall include analytical,
statistical and empirical methods as used by the contractor to justify
his design and weight derivations. It is to be furnished primarily for
study and proposal phases. For airborne systems, weights shall be given
for all elements of the system. When proposed for specific aircraft
(or other launch vehicles) installation, the effect of the weights of the
fixed and expendable elements on the normal extreme balance conditions of
the vehicle shall be derived.
3.4.2.15 Tolerance and Dispersion Data.
When required by the procuring agency:
(a) Submit - System tolerance requirements based on an assessment of
the requirements of each sub-system (weight c.g., M.I., P.I., Principal
Axis Angles, Perpendicularity, dynamic consideration, etc.).
(b) Submit a summarized statistical analysis showing the degree of
accuracy of the weight, c.g. location mass moment and products of inertia
and the computation method employed.
(c) A statistical error analysis of the physical measuring methods
or procedure employed in ascertaining the actual mass characteristics
shall be prepared (and referenced in the Actual Weight Reports) prior to
implementation with substantiation as to cost, method of calibration, etc.
(d) Submit - statistical compilation of actual measured values for
R&D and Operational (Weights root sum squared, etc.)
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