MATERIALS AND PROCESSES- MODERN AIRCRAFT BRAKES

Materials And Processes Used For The Manufacturing Of Modern Aircraft Brakes



Acknowledgement

I would take this opportunity to thank God, my research supervisor, family and friends for their support and guidance without which this research would not have been possible.

Abstract

In this study we try to explore the concept of modern aircraft brakes in a holistic context. The main focus of the research is on Materials and Processes used for the manufacturing Of Modern aircraft brakes. The research also analyzes many aspects of materials and processes and tries to gauge its effect of Modern Aircraft Brakes.

List of Contents

Introduction5

Aims and Objectives6

Main Body6

Hard And Fast9

The Ceramics Absorb Heat9

Learning From Nature11

Carbon Discs12

Conclusions13

Appendices16

Materials And Processes Used For The Manufacturing

Of Modern Aircraft Brakes

Introduction

Carbon-carbon composites used in friction systems are becoming increasingly popular in aircrafts owing to their combination of low weight and high performance. Their current acceptance as brake materials is somewhat restrained due to two factors: cost and performance variations. Many manufacturers are taking steps toward improving their cost efficiency by utilizing lower cost precursor fibers and processing methodologies. At the same time, modifications to material properties are made to address performance issues of oxidation, wear, and variation of effectiveness.

The brakes are often equipped with hydraulic and antiskid system. Detector usually has a mechanism so, air / ground, which enables or disables various systems of the airplane as you fly or the floor. The volume of polymer composites used in race cars of Formula 1 has gradually increased over the past twenty years. In the first vehicles of this type the cockpit and fuel tanks were made mainly by a large number of aluminum parts bolted or welded together. Initial designs of composite materials were similar to those metal parts replaced and did not provide the best possible combination of properties and ease of manufacturing. Only after completely redesign models of cars, the engineers were able to capitalize on the advantages presented by new polymer composite materials.

Aims and Objectives

The aims and objectives of this study are to learn about the materials and processes being used in the manufacturing of modern aircraft brakes in a detailed manner.

Main Body

Consider the scenario of a fully loaded aircraft aborting a takeoff just before the actual takeoff. For a jet fighter, the speed at that moment may be close to 200 miles per hour. There is obviously little reverse thrust to be had from the engines and for a jet fighter there is little aerodynamic drag due to its control surfaces at that moment. The runway is also quickly running out, so the aircraft needs to be stopped quickly. Therefore, all the stopping action falls on the wheel brakes. A commercial jetliner can require in the order of 5,000 braking horsepower per brake (Garret, D.F., 1991).

For a jet fighter at peak speed, the temperatures generated in the brakes due to friction can exceed 2000o F (Hydro Aire Inc., 2005). The situation can be further exacerbated by cross winds that would ...