SOURCE: AFI
The Advanced Systems Laboratory (ASL) in Hyderabad has achieved a significant breakthrough in composite materials technology. They have developed a new fabrication process for creating composite components with exceptional properties, including low density, high insulation capability, and broadband microwave absorption.
The primary application for this composite is as an insulation liner behind airframes. By providing both insulation and radar absorption, it enhances the overall performance and stealth of aircraft.
Radar absorbing materials play a crucial role in reducing the radar signature of objects. By attenuating the back-reflected radar energy, RAMs can make it more difficult for radar systems to detect and track targets. The composite developed by ASL offers an effective solution for achieving this goal.
The composite is fabricated using a match die molding wet layup process. This technique involves placing the composite materials in a mold and then applying pressure and heat to cure the material.
Key Features of the Composite
Versatility: The composite can be molded into various shapes with moderate curvature, making it adaptable to different applications.
Low Density: With a density between 0.33 and 0.4 g/cc, this composite is remarkably lightweight, making it ideal for applications where weight reduction is crucial.
High Insulation: The composite exhibits excellent thermal insulation properties, with a thermal conductivity of 0.1W/m-k. This makes it suitable for use in environments where heat management is essential.
Broadband Microwave Absorption: The composite effectively absorbs electromagnetic waves across a wide range of frequencies, making it an excellent material for radar absorption.
Structural Rigidity: Despite its low density, the composite maintains good structural rigidity, allowing for mechanical handling, cutting, and grinding without compromising its performance.