直升机机载产品环境鉴定试验故障分析

目的探究机载产品在鉴定试验阶段故障频发的原因,并改进机载产品研制流程中的不足之处。方法收集某型直升机机载产品50项环境鉴定试验故障,并对环境试验故障进行分析。结果环境试验故障主要为三防及振动试验故障,其故障发生的原因主要为材料及表面处理方法选用不当、设计缺陷和质量控制程序不够严格。结论针对该分析结果提出机载产品在设计过程中,需要通过尽早安排环境研制性试验、建立环境数据库、模拟仿真进行环境适应性设计和加强质量管理等措施,避免机载产品在鉴定试验阶段故障频发的问题。

Failures of Helicopter Airborne Product in Environmental Qualification Tests

Objective To investigate the causes for frequent failures of airborne products in the qualification test phase, and improve the development process of airborne product. Methods Fifty environmental identification test failures of the helicopter airborne products were collected and analyzed. Results The environmental test failures were mainly three proofings and vibration test failures. The causes of the failures were mainly the following three points: improper selection of materials and surface treatment, design flaws and relaxed quality procedures. Conclusion According to the analysis results, airborne products are re-quired to arrange environmental development tests as early as possible, establish the environmental database, simulate design and strengthen quality management in the design process, so as to avoid frequent failures of airborne products in the identification testing phase.