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Bellows in Aerospace: Implications and Application Areas Discussed

Apr. 18, 2022

Applications in the aerospace industry are designed to withstand the challenges caused by conditions such as sudden temperature increases, pressure fluctuations, chemical exposure, etc. These conditions are known to cause the failure of most standard industrial equipment. While in many industries, these equipment failures can mean downtime, resulting in wasted effort and money, in the aerospace industry, equipment failures can be life-threatening. To avoid these failures, some smaller equipment is used in conjunction with equipment that can withstand sudden temperature effects. The most prominent of these are bellows or expansion joints. They play an important role in the error-free, safe operation of various aerospace equipment and components.

 

Bellows in Aerospace: Implications and Application Areas Discussed

Stainless Steel Metal Hose

 

Significance of bellows in aerospace operations

Bellows are used in a variety of capacities for different aerospace applications. The following tips will help you understand it better.

● Bellows can be used to align equipment and components in the aerospace industry. Aerospace equipment has multiple actuators and other mechanical moving parts. These components can be kept aligned during operations using bellows. Typically, rubber-like bellows are used to limit unwanted movement or alignment of actuators and other linear moving parts. To some extent, these bellows help ensure that the actuator performs linear motion and that no radial, rotational, or angular motion occurs.

● Bellows can be used as pressure sensing and maintenance devices in aerospace applications. They can be used in pressure gauges to check for sudden rises or falls in pressure. Bellows help prevent sudden failure of equipment due to high or low pressure. In some cases, bellows are installed on fluid transfer line fittings at elbows and bends to withstand pressure changes.

● Despite its rugged design, aerospace equipment can fail when it encounters challenges such as friction between moving parts, heat generated during engine operation, and exposure to high ambient temperatures. Bellows contract and expand, resulting in uniform heat distribution and dissipation. Therefore, thermal management in aerospace applications is performed to some extent by bellows.

● In aerospace applications, leak-proofing is essential. Bellows can be used to prevent leakage of lubricated components in aerospace equipment. They prevent lubricants from leaking from joints in aerospace equipment and help reduce friction and improve equipment performance.

A few more important applications for bellows in the aerospace industry

 

Bellows are used in the following aerospace industry applications.

● Velocity detection: Bellows are used in velocity detection systems for aerospace equipment. Pressure fluctuations occur in several parts of aerospace equipment due to velocity changes. Bellows help to sense small changes in pressure in these speed detection devices.

● Communication equipment: Communication equipment used in the aerospace industry is exposed to high frequency signals. Bellows helps minimize the impact of such high frequencies, vibrations and dB loss on communication equipment.

● Electronic equipment: Bellows help ensure mechanical redundancy for sensitive electronic equipment in the aerospace industry.

● Mechanical drives: Aerospace equipment has multiple mechanical drives. While most drive systems are electronically supported, the actual mechanism of operation is based on mechanical connections. Bellows can be used to prevent contaminants, pressure buildup, temperature rise, misalignment, etc. in these mechanical connections.

Since bellows are well established in the aerospace industry, operational efficiency depends on the quality of the bellows.

 

Bellows in Aerospace: Implications and Application Areas Discussed

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