Aerospace Manufacturing Thermal and Acoustic Insulation Materials

Aerospace Manufacturing: Thermal and Acoustic Insulation Materials

Passengers’ and flight crew comfort is ensured by adequate regulation of the atmosphere within an airplane. Temperatures on the fuselage skin may fluctuate from –60°F in flight to 160°F while parked in bright sunshine, posing a hazard to the cabin’s interior temperature. Furthermore, the aircraft’s engine and aerodynamics of flight produce a significant quantity of noise, which can be uncomfortable for crew and passengers if sufficient insulation is not provided.

According to the FAA, practically all commercial aircraft must have thermal and acoustic insulation. These insulators guarantee that passengers’ comfort is not affected by exterior temperature variations and that excessive noise created by the aircraft doesn’t interfere with communication. This post will cover thermal and acoustic insulation and how to choose the proper insulation for your aerospace manufacturing. 

What is Thermal Acoustic Insulation?

what is thermal acoustic insulation

Thermal acoustic insulation protects against excessive noise and temperature in most airplanes. Thermal, acoustic insulation is a unique high-performance fiber enclosed in an aircraft-rated plastic covering that holds the insulating materials together while also functioning as a moisture barrier. It is applied to the whole fuselage of the airplane. How does thermal and acoustic insulation differ?

Thermal Insulation: The decrease of heat transmission between objects in thermal contact or within the region of irradiative effect.

Acoustic Insulation: Any method of lowering the strength of sound with regard to a certain source and receptor.

How to Choose the Best Thermal and Acoustic Aircraft Insulation Materials

There are a few considerations to make while selecting interior aircraft insulation materials. Each of the following items is significant because it contributes to the aircraft’s crew and passengers’ health, welfare, and safety.

Insulation

Aircraft insulation is critical because it serves a range of functions other than temperature and climatic management. Airplane insulation improves the plane’s acoustic, thermal, fire-resistance, anti-vibration, and electrical insulation capabilities. Regardless of the numerous goals, the material’s ability to inhibit heat transmission must be considered.

The outdoor temperature at 35,000 feet, for instance, is around -60 degrees Fahrenheit. By filling the area between the interior wall and the airplane’s fuselage, aviation insulation material, in conjunction with pressurization, helps to keep the cabin warm. An appropriate airplane insulation material will assist in maintaining a pleasant and comfortable atmosphere while also reducing noise and vibration significantly.

Noise Reduction

Airplanes, by definition, produce a great deal of unwanted noise. The engines and airflow, which pass through the fuselage and overall structure, provide the usual rumbling or roar audible from a plane. A mix of thermal/acoustic blankets and other sound-absorbing materials must be used to make the airplane cabin quieter. Some materials are better at absorbing sound than others. Opt for materials that can deliver the required sound transmission loss (STL) without sacrificing weight, space, or aesthetics.

Fire Resistance

All aircraft must be made of fire-resistant materials. Aircraft insulation materials should have proven flame-retardant properties to reduce the risk of fire and assist prevent or limit the spread of flames if one develops, ensuring the safety of crew members and passengers. The FAA requires that most airplane interior materials be self-extinguishing.

Non-Slip Surface

Slips and falls are among the most common causes of occupational accidents. In reality, the inside of an airplane may generate several potentially dangerous conditions for both crew members and passengers, such as tripping on stairwells connecting decks and exits.

Non-slip airplane flooring is vital for these and other reasons. Fortunately, you can gain this advantage without sacrificing other aspects of your life. There is textile and non-textile flooring available that has been developed to improve both safety and beauty.

Cleanability

An aircraft is a limited space that transports passengers around the clock. Choose airplane interior materials with antimicrobial properties that are exceptionally simple to clean to avoid stains, bacteria development, mildew, and smells. This is especially true in the case of flooring.

For optimal cleanability, choose a non-textile flooring option. If you want woven flooring, search for a high-performance material designed to withstand water, oils, chemicals, and grease. Consider a non-absorbent underlay as well.

Durability

While passenger safety is the most critical consideration when selecting airplane interior materials, a long-lasting product that reduces total replacement costs is crucial.

Consider two aspects while selecting textile materials: fiber combination and fabric structure.

Fiber mixes that include tough fibers like aramids or nylon provide great abrasion resistance and long-term durability. Tear strength is also substantially higher in these sorts of mixes. The longevity of airplane interior materials is also greatly influenced by fabric structure. The weave, weight, weft, and thread count all contribute to the overall longevity.

Static Resistance

Electrostatic charge can collect on both the outside and interior surfaces of the aircraft if anti-static procedures are not put in place. This should be avoided to minimize delays in in-flight communications, refueling operations, and even dangerous explosions in fuel regions.

The aviation industry has implemented several techniques to reduce or eliminate electrostatic charge buildup, the most frequent of which is the use of static dissipative components.

Types of Thermal Insulations for Aircrafts

types of thermal insulations for aircrafts

There are several types of insulations needed within an aircraft, including:

Insulation Tape

Aerospace tapes are designed to make aircraft composite molding easier to handle, provide ideal surfaces, and boost protection and durability. To protect passengers, aircraft structure, and sensitive components, tapes intended for bonding, sealing, and insulation meet the most stringent functional and performance criteria. With quick and clean removal, tapes can help you save money on maintenance, move quickly and cleanly, and extend the life of your aircraft by providing reliable vibration, corrosion, and fluid protection.

High-Temperature Insulations

Interior panels with a vast surface area, such as walls, are subjected to stringent testing. The panels must be adequately heat resistant and conform to a peak heat release frequency to achieve these requirements.

Thrust Reversal System Insulation

Thrust reversal is used by airplanes when they need to slow down. The engine’s thrust is briefly directed forward instead of rearward in this situation – working against the forward momentum of the airplane, slowing it down.

When airplanes touch down, this deceleration procedure is critical to prevent brake-wearing and allow for reduced landing distances.

However, the procedure is potentially hazardous and has resulted in tragic mishaps in the past. The jet blast is forced forward when a jet plane utilizes reverse thrust. Insulation is critical in such situations.

Blackbox Insulation

After a major accident, a black box may be required to deliver critical data. It has to be able to endure harsh circumstances, such as heavy impact and high temperatures.

Aircraft Battery Insulation

Resilience is one of the most important characteristics of an aviation battery. As a result, much like other modes of transportation, the aircraft’s battery must be adequately protected by high-temperature insulation.

Does Acoustic Insulation Have Thermal Properties?

You’ll discover that acoustic insulation materials, to some degree, have thermal qualities. The excellent news is that thermal insulation materials will increase your soundproofing efforts.

Use Lamart Corporation Thermal and Acoustic Insulation Materials

Lamart Corporation’s coatings and tape solutions perform effectively for thermal acoustic insulation manufacture. These solutions function well in high temperatures and high humidity settings due to their outstanding heat seal qualities. They also make interior assembly simple, increasing operating efficiency and optimizing production processes.

Additionally, the fire-resistant technology is directly included in the formulations of these insulation adhesives. These materials help to improve insulation safety by passing severe adhesive criteria.

Learn more about Lamart Corporation’s coating and tape solutions for your aerospace projects, or contact our team today.

Craig Hirsh

chirsh@lamartcorp.com
Craig is a third-generation owner of Lamart Corporation with over ten years of experience developing custom-designed products to meet customer specifications and expectations.