No.3, Jiangjunzi Road, Bangjiangxi Village, Dalong Street, Shiqi Town, Panyu District, Guangzhou City
Military standard wind and rain test solution
GJB 150.8-1986 "Equipment Laboratory Environmental Test Method-Rain Test"
GJB 150.8A-2009 "Equipment Laboratory Environmental Test Method Part 8: Rain Test"
GJB 367A-2001 "General Specification for Equipment and Communication Equipment"
Rain test system: According to the GJB150.8A-2009 military equipment rain test method and requirements, a comprehensive and standardized rain test is carried out on military equipment, including procedure I (rain and blowing rain), procedure II (enhanced) and Procedure III (dripping water).
Rain test equipment can be used to determine the following environmental impacts related to rain, water spray and dripping:
A: Effectiveness of preventing water from penetrating into the protective cover, shell and sealing gasket of the equipment;
B: The ability of the equipment to meet its performance requirements when and after exposure to water;
C: Any physical damage to the equipment due to rain;
D: The effectiveness of any water removal device;
E: Check the effectiveness of equipment packaging.
The equipment has the functions of program test and constant test, and can perform rain and drip tests.
Military Standard Rain Test Plan-Draft
Military standard rain test room-real shot
[Wind speed range] The test box can produce wind with a wind speed of 5-18 m/s, with an error of ±5%. The direction of the wind source relative to the test sample should be able to change the rain from the horizontal direction to a 45° angle and evenly test Pipe on one side of the sample.
[Rainfall device] The rainfall device is mainly composed of a lifting device and a drip pan. The rainfall device can be set up by the controller for the test program, and automatically switch to the three test modes of raining with wind source and automatically raining from the surface of the sample 1 meter. The effective drip area of the drip box: 5000×5000mm, the distance between the pinhole and the pinhole: 20×20mm, the material of the drip box is stainless steel.
[Nozzle parameters] The diameter of the nozzle is ￠0.4mm, the distance between the drip holes: 20mm, the diameter of raindrops can be 0.5～4.5mm, and the nozzle design should be able to make water droplets.
【Test time】Periodic cycle can be carried out; continuous rainfall time can be set, maximum 24 hours;
[Intensified rainfall] The pressure of the nozzle is ≥276kpa, and the raindrop diameter is 2～4.5mm; the nozzle is installed on the back and top surface of the sample on the rotating table, and each side is installed with 2 rows, 2 rows of 4 nozzles to form a grid spray net Array, 2 rows, 2 columns and 4 nozzles are installed on the top to form a grid spraying grid. The nozzles are 500×500mm apart. The nozzles are full-circle spray type, which can be detached by threaded connection. The spray angle is about 60°; the nozzle hole The diameter is 1.0mm.
[Sample Rotary Table] The diameter of the sample to be installed on the rotary table is φ1000 mm; the load-bearing capacity of the rotary table is ≥100 Kg; the rotary table speed range is continuously adjustable from 1 to 16 rpm/min, and can be set to work automatically; the rotation angle of the rotary table can be set arbitrarily , The dwell time of each gear can be set.