M1L-P-50307(MU)
3.5.2
Ann 10547473 - T h e t o r q u e v a l u e s e x h i b i t e d b y A r m 1 0 5 4 7 4 7 3
shall not exceed the values demonstrated for each position specified in
3 . 7 . 1 0 b y more than 10 pound inches.
,
3.6
Humidity - T h e p r o j e c t o r s h a l l n o t e v i d e n c e d a m a g e a f t e r e x -
p o s u r e t o a 9 7 % r e l a t i v e h u m i d i t y (R H) f o r 2 4 h o u r s a t + 1 6 0 " F f o l l o w e d
by four hours at between +60"F and +90"F with condensation taking place
on the projector.
3.7 Performance between +60°F and +90"F - Except where otherwise
specified, the projector shall meet the requirements of 3.7.1 to 3.7.8
tt
after orientations "a" to `Id inclusive have been effected.
This ori-
entation shall establish a geometric axis designated as line "w" in
relation to all other axes depicted in Figure 1 and as defined in the
following requirements:
a.
In a plane that is 4.5 inches above and parallel to the
horizontal longitudinal plane containing line A (Figure 1). Line A
shall be an axis through the center of the bore in the cast-in leg, or
support, provided on the main housing to mount the projector to its next
higher assembly.
b . In a plane 90° to a plumb plane containing Line D (Figure
Line D shall be an axis through the center of the bore in the cast-
1)
●
in yoke on the main housing which supports the tapered arm assembly.
c.
In a plumb longitudinal plane that is parallel and 17-5/16
inches from a vertical longitudinal plane containing Line D (Figure 1)
in the direction of the beamsplitter-when Arm 10547473 is in an operat-
ing position.
In a plumb l o n g i t u d i n a l p l a n e t h a t f o r m s a n a n g l e o f 4 0 °
d.
i 2° with a plumb plane containing the center line of datum diameter
C on Drawing F10547482.
●
3.7.1 Vibration - The projector shall evidence no damage or elec-
trical circuit malfunction during or after the vibration specified herein,
w i t h e l e c t r i c a l p o t e n t i a l a p p l i e d , and Arm 10547473 in an operating and
stowed position. The initial optical-mechanical alignment demonstrated
while meeting 3.7.2 shall not have changed more than one mil subsequent
to either vibration. There shall be no flickering'of the projected re-
ticle image during vibration.
3.7.1.1 Vibration "A" - This vibration shall be for two hours, in
each plane of three mutually perpendicular planes, at the sinusoidal
frequencies and amplitudes depicted in Figure 2. During each first hour
period, the frequency shall be cycled logarithmically from 5 to 500 to
5 cycles per second (cps) for four cycles each of 15 t 1 minute duration.
A fifteen minute dwell shall occur at each of the most significant re-
sonant frequencies (not exceeding 4) exhibited by the sight during the
first hour of each two hour vibration in each plane. Arm I05L7473 shall
be sequentially located in a stowed and operating position when meeting
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