and is widely used in airborne electronic equipment in various countries.
After a long period of revision and improvement, the ATR standard has become quite mature. The use of the ATR standard can effectively use space and complete the miniaturization of equipment; the standardized structure can also reduce maintenance costs; at the same time, it can reduce the interaction between aircraft designers and equipment designers. Coordinate work and shorten the development cycle.
The ATR case includes quick-extractable electronic equipment and equipment mounting brackets, which is very suitable for applications that require fast insertion and removal in harsh environments. my country’s ATR chassis design specifications, chassis shape and installation dimensions are stipulated by relevant national military standards. The main standards are as follows:
GJB 441-1988 The form and basic dimensions of the chassis and mounting frame of airborne electronic equipment.
GJB 779-1988 General specification for chassis and mounting frame of airborne electronic equipment.
GJB 780-1989 The basic dimensions of the mounting frame and accessories for airborne electronic equipment.
GJB 150A Military Equipment Environmental Test Program
In a project, it is necessary to develop an ATR structure chassis. The chassis adopts 1/2ATR-SH, the size is 256.3mm*315mm*194mm, and the weight does not exceed 2KG. The chassis is fixed on its own single-desktop mounting frame, and finally installed on the integrated mounting frame. superior. Modular design, thermal design, mechanical strength design, electromagnetic compatibility design, lightweight design, etc. are used to optimize the design of the ATR chassis.
At the beginning of the design, the structural stress of the ATR chassis was calculated and analyzed, and the weak links in the structural design were corrected. The cabinet has compact structure, light weight, high space utilization, and the layout of the functional modules in the cabinet is neat and clear. The chassis connection mounting bracket has passed environmental tests such as temperature, shock, vibration, salt spray, mold, damp and heat, and passed the electromagnetic compatibility test under airborne conditions, meeting the requirements of GJB-150.
ATR chassis technical solution, drawing design, simulation analysis
ATR case machining, surface finishing, painting, assembly
ATR chassis installation accessories: locking strips, pull-out aids, front locking devices and supporting accessories, grounding poles, vibration isolators, etc.
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