 |
|||
|
Page Title:
High temperature storage and operation |
|
||
| ||||||||||
|
|  MIL-T-83808
(84)
gears and other controls to prove proper working condition The vehicle shall then be cold soaked for a
period of 24 hours at -10F, plus or minus 2.5F. Ether injection shall be the only starting aid used. Non-
compliance with said test shall be cause for rejection.
vironmental tests.
4.6.8
4.6.8.1
w temperature storage a nd operation. The complete vehicle, including all accessories, shall
be tested in accordance with Test Method 502.2, Procedures I and II, of MIL-STD-810 to demonstrate
compliance with 3.1.4(a). Temperature sensor locations shall be approved by the procuring activity, Op-
erational checkouts shall be performed in accordance with paragraph 4.6.8.5. Engine starting aids may be
used (see 3.3.2.1.3). When applicable, a fine mist of water shall be applied to the entire windshield to
form a thin film of ice. The defroster shall clear the windshield within one hour and maintain clear vision
throughout the remainder of the test. "Standard ambient" and -controlled ambient" shall be defined as the
ambient condition of the test site. For Procedure 1, the vehicle shall be exposed to the minimum required
cold storage temperature of 3.1.4(a) in a steady state condition for 24 hours. For Procedure II, the vehicle
shall be exposed to the minimum required cold operational temperature of 3.1.4(a) in a steady state
condition.
High temperature storage and operation. The complete vehicle, including all accessories,
4.6.8.2
shall be tested in accordance with Test Method 501.2, Procedures I and II of MIL-STD-810 to demon-
strate compliance with 3.1.4(a). Temperature sensor locations shall be approved by the procuring activity.
Operational checkouts shall be performed in accordance with 4.6.8.5. "Standard ambient" and "controlled
ambient shall be defined as the ambient condition of the test site. For Procedure I, the vehicle shall be
exposed to the maximum required hot storage temperature of 3.1.4(a) in a steady state condition for 24
hours. For Procedure II, the vehicle shall be exposed to the maximum required hot operational tempera-
ture of 3.1.4(a) in a steady state condition.
Rain. The complete vehicle, including all accessories, shall be tested in accordance with Test
4.6.8.3
Method 506.2, Procedure Ill, of MIL-STD-810 to demonstrate compliance with 3.1.4(c). Operational
checkouts shall be in accordance with 4.6.8.5. The interior of the cab and all compartments shall be
examined for water: any evidence of leakage shall be cause for rejection.
4.6.8.4
the r environmenta l tests. The components and materials used in the construction of the
vehicle shall be subjected to, or certified as having passed, or being capable of passing, the following test
methods of MIL-STD-810 to demonstrate compliance with 3.1.4
a. Humidity - Method 507.2, Procedure I.
b. Salt Fog - Method 509.2, Procedure I. Cycling test shall be used One cycle consists of 24
hours exposure to the test environment followed by 24 hour exposure to standard ambient
conditions. A minimum of 7 cycles shall be conducted.
c. Sand and Dust - Method 510.2, Procedures I and II. For Procedure I, air velocity shall be
1,750 ft/min and high temperature adjustment shall be 125F. For Procedure II air velocity
shall be 5,700 ft/min; sand concentration of 0.0623 g/ft3, plus or minus 0 015 g/ft3; 90 minutes
per face duration.
d. Snow and ice, perform tests in accordance with para 3.1.4g For procedure, air velocity
shall be 50 knots per hour, blowing snow/freezing rain or combination, snow/ice concentration
0.0773 g/ft 90 minutes duration.
4.6.8.5
ional checkout . All controls, levers, mechanisms, and doors shall be actuated a suffi-
cient number of times to ensure consistency of operation and to determine whether the test exposure
produced system degradation.
4.6.9
ab ility demonstrated Compliance with the quantitative reliability requirements of 3.1.3.1
shall be demonstrated by the tests in 4.6.9.1 The vehicle shall complete, as a minimum. the tests de-
31
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals