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| MIL-D-23222A(AS)
3.7.4
(Cont)
Collective-control column (in the direction
(e)
of motion)
Fore, mid, and aft cabin compartment (lateral
(f)
and vertical)
Primary longitudinal structural member in
(g)
fuselage (vertical and lateral) at the
approximate positions of maximum amplitude.
Navigator's table and other work tables
(h)
(longitudinal and lateral)
A position representative of the primary load
(i)
path from the rotor(s) to the fuselage (verti-
cal, longitudinal, and lateral)
Stabilizer tip (vertical and longitudinal)
(j)
for symmetrical stabilizers, vertical both
sides.
Fin tip (lateral and normal to the primary
(k)
structural members)
(l)
Engines and external stores (a suitable number of
-
pickups shall be used to determine the motions
of the engines and external stores). Measure-
ments performed in accordance with paragraph
3.3.5.2.5.1 may be coordinated with this
requirement.
3.7.5
EXTERNAL CARGO SYSTEM. - THE contractor shall demon-
strate, with specified external cargo load, the
maximum safe airspeed limits to which the cargo can be carried, or the
maximum safe load and airspeed combinations for towing, as applicable.
At the maximum safe airspeed, emergency release of load shall be
demonstrated.
3.7.6
FLIGHT STRESS SURVEY. - A flight stress survey
shall be performed on critical components. This
survey shall include the critical speeds and maneuvers in the required
flight envelope, including transition into autorotations and landing
flares, and steady rates of descent. Data shall be obtained to correlate
37
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