飞机复合材料结构全寿命成本研究

Study on Life Cycle Cost of Aircraft Composite Structures

全寿命成本研究是以成本最低为目标的设计理念,这种理念越来越受到重视。基于飞机制造成本模型建立了复合材料结构制造成本模型,并且简化了变量。应用间隔功能检测策略建立了维修成本模型,与研制成本统一了变量,考虑到了整体的相关性。对金属和复合材料副翼的各项成本进行了对比分析。基于金属材料副翼而言,随着产量和使用时间增加,当复合材料研制成本增加0.2%时,生产成本减少15%,维修总成本减少21.7%,全寿命周期成本减少16.2%。计算结果表明复合材料在飞机结构上的应用会使其成本减少。

Study on life cycle cost is a design concept aiming at the goal of the lowest cost. The concept gets more and more attention. A manufacturing cost model for the composite structure was developed based on the aircraft manufacturing cost model, and simplified variables. The maintenance cost models were established based on the interval function detection strategy, which unified variables with manufacturing cost and considered overall correlation. Variovs costs for metal and composite aileron were compared and analyzed. With the increasing of production and service time, if the composite manufacturing cost increases 0.2%, production cost decreases 15%, total maintenance cost decreases 21.7% and life cycle cost decreases 16.2%, which is based on mental aileron. The results show that the application of composite to aircraft structures will decrease the cost.