 |
|||
|
|
|||
| ||||||||||
|
|  MIL-S-18471G(AS)
in aircrewmember stations. Failure of the intraseat sequencing subsystem or
its sensors shall not result in failure of the affected component(s) or
subsystem(s) to function in a preselected mode.
3.2.2.9.1 Sensors. Sensors utilized in the escape system shall be approved
by the procuring activity and shall meet the following requirements (see 6.2.2):
a.
Sensors shall be incorporated as redundant pairs with
separate and independent signal transmission lines routed
to minimize the likelihood that localized aircraft damage
would disable both lines.
b. Probes and static pressure ports which route free airstream
samples to altitude, airspeed, and other similar sensors
shall be located, oriented, and secured in a manner which
ensures repeatable and accurate performance over the
full range of the parameter(s) being sensed. The repeat-
ability and accuracy of the installed sensor and control
subsystems shall be demonstrated during the tests of
4.4.2, 4.4.3, and 4.6.1.
c. Tubing and hoses used to interconnect the various probes,
ports, vents, sensors, and control elements shall incorporate
water traps or the equivalent to ensure that accumulated
moisture will not interfere with proper functioning
d. Sensor design and placement shall not hinder or endanger
a fully equipped aircrewmember and the escape system during
normal ingress and egress, normal aircraft operations
emergency manual escape from the aircraft, or ejection.
e. Sensors and probes shall be located and suitably protected
to ensure that jettisoned material and fragments resulting
from the escape sequence do not prevent proper functioning.
The initiation subsystem shall:
3.2.2.10 Initiation subsystems.
a.
Include, as a minimum, a firing control mechanism and a
lower firing control assembly comprised of a lower firing
control handle and redundant lower firing control linkages.
If an aircrewmember, tightly restrained and representing
worst case anthropometry and attire, cannot actuate the lower
firing control handle under one negative "g" condition, then
an upper firing control assembly comprised of a face curtain,
upper firing control handle and redundant upper firing
control linkages shall also be required.
b. Initiate the complete escape sequence required for safe
ejection of the aircrewmember and associated ejection
seat, when actuated.
c. Be integrated, as required, with the interseat sequencing/
spatial separation subsystem in escape systems containing
two or more crew stations.
d. Transmit all signals redundantly (i.e., via at least two
independent functionally parallel, and physically separated
paths).
34
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals