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|  MIL-M-13081F
4.5.2.11.1 Engine horsepower. When an internal combustion pump engine is
furnished, the engine speed (rpm) and intake manifold vacuum shall be measured
and recorded at 20-second intervals for duration of the pump capacity test
specified in 4.5.2.11. These readings shall be compared with the engine speed
(rpm) brake horsepower and intake manifold vacuum curve for the continuous brake
horsepower condition as established during testing by the engine manufacturer.
Inability to pump at each race specified (see 4.5.2.11) or any intake manifold
vacuum reading recorded during the pump capacity test that is lower than the
reading listed on the continuous horsepower curve established by the engine
manufacturer at the corresponding speed (rpm) shall constitute failure of this
test.
4.5.2.12 Tire load. With the fuel tanks and the radiator filled to capacity,
with all the gearcases and hydraulic systems filled to capacity, and with the
rotor and rotor hood raised to the normal travel height, determine the load
imposed on each tire. Loads in excess of that for which the tire is rated by
the Tire and Rim Association Yearbook shall constitute failure of this test.
4.5.2.13 Electromagnetic interference. Unless otherwise specified, the mixer
shall be tested in accordance with SAE J551. A report tabulating the allowable
maximum interference and the measured interference shall be furnished with the
first article model test report. Failure to meet the requirements of SAE J551,
shall constitute failure of this test.
4.5.2.14 Noise level test. Noise levels shall be measured in accordance with
MIL-STD-1474 requirements and reported in the format indicated by MIL-STD-1474,
figure 7. As a minimum: noise levels shall be measured when equipment is
operating under full load. MTL-STD-1474, 5.1.2.1.4 contours shall be taken at
not fewer than 12 equal (horizontal) arc increments, one increment shall include
data from the noisiest position. Additionally, the noise levels at the typical
operating position shall be provided as dB(A) level. Failure to meet the
requirements of 3.6 shall constitute failure of this test.
4.5.2.15 Dimensional inspection. Make a dimensional check of the mixer and
compare to table I and 3.29. Any dimension exceeding the dimensions in table I
or nonconformance to 3.29 shall constitute failure of this test.
Test procedures of lifting
4.5.2.16 Test procedure of lifting provisions.
provisions shall be as follows:
Lift the mixer and bold in suspension in its normal travel position
a.
using slings that converge not more than 24 feet (7.3152 m) above
the lowest extremity of the mixer. Determine the true angle of
each sling leg relative to the vertical. Measure the clearance
between each sling and the mixer. Measure eye openings and
clearence dimensions of the provision. Measure the load carried by
each provision.
Restrain the mixer by anchoring the main frame and subject each
b.
provision to a force equal to the load factor specified in
MIL-STD-209 times the load it carried in a. above. An alternate
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