Advanced materials mean advanced engines
Advanced materials mean advanced engines
复制标题
先进的材料意味着先进的发动机
DOI：
10.1179/isr.1995.20.4.117
复制
发表时间：
1995
影响因子：
1.1
通讯作者：
Stewart Miller
中科院分区：
文献类型：
--
作者：
Stewart Miller
在这第三次芬尼斯顿讲座，航空发动机技术的最新进展，使材料科学家和设计和制造工程师之间的跨学科合作成为可能。至关重要的是，在充分考虑材料特性和制造工艺能力的情况下，高效且经济高效地设计部件几何形状。最直接定义飞机燃气涡轮机的推力和燃料消耗的三个操作参数-风扇气流或直径、总压力比或压缩机输送温度以及涡轮机入口温度-又在很大程度上取决于这些能力。随着商用涡轮风扇涵道比的增加，大直径部件的重量变得越来越重要。钛和复合材料，每一种都有自己的先进制造技术，允许在可接受的重量下实现100 000磅的推力。总压比是提高燃烧效率的主要因素。
AbstractIn this, the third Finniston Lecture, the recent advances in aero engine technology made possible by interdisciplinary collaboration between materials scientists and design and manufacturing engineers are reviewed. Of crucial importance is the efficient and cost effective design of component geometries with due regard for material properties and manufacturing process capability. The three operating parameters that most directly define the thrust and fuel consumption of an aircraft gas turbine – fan airflow, or diameter, overall pressure ratio, or compressor delivery temperature, and turbine inlet temperature – are in turn largely dependent on these capabilities. As bypass ratios of commercial turbofans increase, the weight of the large diameter components becomes increasingly important. Titanium and composite materials, each with their own advanced manufacturing techniques, allow thrusts of 100 000 lb to be achieved at acceptable weight. Overall pressure ratio is a major influence in improving fue...