(E!mEl
DOD-P-24562A(SH)
1 November 1982
SUPERSEDING
DOD-P-24562(SH) .
28 December 1977
(See 6.6)
MILITARY SPECIFICATION
.PROPELLERS,SHIP, CONTROLLABLE PITCH (METRIC)
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This specification is approved for use by the Naval Sea Systems Command,
Department of the Navy, and is available for use by all Departments and
Agencies of the Department of Defense.
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I. SCOPE
1.1 Scope. This specification covers
propellers of the controllable pitch type.
accordancewith the contract or order.
For
general requirements for marine
Specific requirements will be in
this specification, a propeller
o
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shall be considered as consisting of propeller blades, a hub with an internal
activating mechanism for the blades, propulsion shafting, shafting inte~al
components,
an oil distribution box or pitch control unit, hydraulic and
mechanical systems required for operation of the propeller pitch mechanism,
and associated cotnponents,tools, and devices.
1.2 Classification. Controllable pitch propellers shall be of the fol-
lowing styles, blade designs, types, and levels, as spec~fied (see 6,2.1):
Style H
- Hydraulic or hydro-mechanicalpropeller blade
actuating mechanism.
Style M
- Mechanical propeller blade actuating mechanism.
Blade design A -
Propeller hydrodynamic blade design provided by the
contracting activity (see 3.4.2).
Blade design B
- Propeller hydrodynamic blade design provided by the
contractor (see 3.4.3).
Blade design C -
Propeller blade design in accordance with American
Bureau of Shipping (ABS) Rules with no ice strength-
enfng requirements (see 3.4.3).
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Beneficial comments (recommendations,additions, deletions) and any pertinent
data which may be of use in improving this document should be addressed to:
Commander, Naval Sea Systems Command,
SEA 55Z3, Department of the Navy,
Washington, DC 20362 by using the self-addressed StandardizationDocument
Improvement Proposal (DD Form 1426) appearing at the end of this document
or by letter.
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