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| MIL-T-18232B(AS)
3.10.3.2
SOLID PROPELLANTS. - Solid propellant(s), if utilized, shall
be developed and tested in accordance with WS-4235.
3.10.4
TANKS. - Propellant tankage shall be fabricated from materials
compatible with the propellants selected.
3.10.4.1
VALVES, FITTINGS, LINES, PUMPS, ETC. - Valves} fittings, lines,
pumps, etc., aS may be required, shall be designed to withstand
without failure the pressures, vibrations, and shocks encountered in handling,
launching and flight. They shall be capable of resisting deterioration during
long-term storage.
3.10.5
IGNITION SYSTEM. - All parts of the ignition system shall be
shielded. Ignition or igniter circuits shall be secured
against excessive vibration and shall be protected against shortcircuits or grounds
due to chafing. Ignition circuits shall be protected from spray, excessive damp-
ness, and excessive heat. Ignition wire terminals shall be of an approved type.
Sufficient clearance shall be provided around shielding devices to prevent inter-
ference with engine cowling and engine accessories. The ignition system shall
be designed and tested to withstand the hazards of electromagnetic radiation.
3.10.5.1
IGNITORS. - Ignitors under the cognizance of NAVAIR shall,
if utilized, be developed and tested in accordance with WS-4235.
3.10.6
AIR INDUCTION SYSTEM
3.10.6.1
DESCRIPTION. - Air induction systems shall be as required by
the detail specification and shall have sufficient strength
so that vibration or flexing, normally expected in service,will not cause
rupture of the system.
3.10.6.2
AIR INTAKES
3.10.6.2.1
AIR INTAKES (RECIPROCATING ENGINES). - Particular attention
shall be given to a minimum disturbance of intake flow in all
flight attitudes and minimum induction of spray or dust. The duct areas and
routing shall provide the maximum practicable engine intake air pressure and
velocity over the entrance area to preclude erratic metering. Pockets which may
collect fuel or water shall be avoided. All joints between carburetors and air
intake ducts shall be gasoline-tight. In the event of backfire, flames shall be
discharged into the open air or into spaces free of flammable materials or
explosive mixture and shall not damage the air intake duct or other parts of the
engine installation.
3.10.6.2.2
AIR INTAKES (TURBO ENGINES). - The permissible variation in
total pressure at the engine compressor inlet face shall not
be greater than that established by the engine manufacturer and approved by NAVAIR.
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