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MIL-D-23222A(AS)
3.10.7.1
ACCELERATIONS AND DECELERATIONS. - Perform slow,
intermediate and snap accelerations and decelera-
tions through the following ranges at 3000 and 8000 feet pressure
altitude.  Data shall be recorded at one-fourth-second-intervals.
Idle to 60 percent intermediate power or thrust.
(1)
Idle to 100 percent intermediate power or thrust.
(2)
60 percent to 100 percent intermediate power or
(3)
thrust.
(4)
A simulated wave-off shall be performed and
recorded at
(a) A pressure altitude of 5000 feet, and
(b) A pressure altitude of 5000 feet, from
power approach RPM to intermediate RPM.
A soak time of not less than one minute for reciprocating engines
and 15 seconds for turbo-shaft engines at the point of accelerations
shall precede the power lever movement. A minimum of 10 data points
(or sufficient data to show control system transients) listed in the
applicable sub-paragraphS Of 3.10.3, shall be reported on one engine
only during each acceleration and deceleration.
3.10.7.2
EMERGENCY PROTECTION. - If a manual (emergency)
control is provided, switchovers from primary
control to manual control during normal rated thrust or power
level flight runs at 10,000 feet altitude to service ceiling shall
be performed (on one engine only on multiple engine aircraft).
3.1O.7.3
OPERATION WITH MISSILE FIRING. - When applicable,
engine operation during gun, guided missile, and
rocket firing, shall be demonstrated in accordance with 3.11.3, 3.11.4,
and 3.11.5.
3.10.7.4
INFRARED RADIATION. - The contractor shall arrange
for infrared radiation measurement in flight of
the helicopter engine combustion with the cognizant infrared measuring
activity in sufficient time to permit scheduling of a government
aircraft equipped for measuring of infrared.  This measurement shall
not interfere with the demonstration, but shall be scheduled when
level flight demonstrations at optional altitude are scheduled. The
results of the demonstrate ion shall be reported.
70

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