 |
|||
|
|
|||
| ||||||||||
|
|  MIL-T-60826B(MU)
be rotated through a minimum of 3 full excursions (cw stop-to ccw stop-to
cw stop), of its rotational range and each elevation and deflection bore-
sight knob shall be rotated through a minimum of 3 full excursions (cw
stop-to ccw-to cw stop) of their rotational range. Any evidence of leak-
age in the telescope assembly or reticle projector assembly, at the end
of the 2 hour time period, shall not exceed the tolerance specified in 3.5,
as measured on the pressure gauges of the testing equipment. Upon comple-
tion of test release the poppet valves 10516717 and 11727998.
4.6.6 Interior Atmosphere. - Upon satisfactory completion of the
sealing test the telescope shall be flushed with dry nitrogen gas. The
flushing shall continue until the nitrogen gas bled from the telescope
(telescope assembly and reticle projector assembly) conforms to the dew
point requirement of 3.9, as measured with a dew point tester. The internal
pressure of the telescope (telescope assembly and reticle projector
assembly) shall conform to the requirement of 3.9.
4.6.7 Orientation. - Orientation shall be accomplished by means of
special testing equipment in compliance with 4.5.2.3.2, placed on a sur-
face plate or table that has been leveled by means of a precision (10 seconds)
bench level. The end of the objective tube assembly shall be positioned
toward a target for measuring the projected reticle patterns of the teles-
cope. Unless otherwise specified, optical accuracy of the telescope shall
be measured on a collimator projector target set to a focus of 1200 meters
100 meters. The optical axis of the collimator projector shall be coin-
cident to the geometric axis of the telescope. A reticle switch selector
to select either of the two reticle patterns for projection into the optical
path of the telescope, and a 24 volt dc power source to provide the power
to energize the telescope will be used in conjunction with the testing
equipment specified in 4.5.2.3.2. The telescope shall be positioned as
specified in 3.6 unless otherwise specified.
4.6.7.1 Eight power (8x) system. - The following tests shall be
conducted with the power selector lever at the 8X position.
4.6.7.1.1 Collimation, conventional reticle. - Actuate the reticle
selector switch to illuminate the missile reticle. Position the boresight
cross of the missile reticle (intersecting point of the vertical and hor-
izontal lines) coincident with the intersecting point of the vertical and
horizontal target line image on the collimator projector target, by means
of the missile reticle boresight knobs. A reference mark shall be made
on the dial control plate in true alignment with a reference mark on the
housing which will serve as a zero reference point of midpoint position
for the missile boresight kmnobs. Actuate the reticle switch to illuminate
the conventional reticle. Position the boresight cross of the conventional
reticle (intersecting point of the vertical and horizontal lines) coincident
with the image of a target reference point located on the vertical target
line 26.6 mils above the horizontal target line, by means of the conven-
tional reticle boresight knobs. Slip the conventional reticle knob scales
to theier zero referece position. The missile and conventional reticle
shall conform to the requirements of 3.6.1,1 and 3.6.1.1.1.
13
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals