Tuesday, 6 December 2022

aircraft insulation blankets : What is aircraft insulation blankets ? Purpose, Location, Materials of insulation blankets.

aircraft insulation blankets : What is aircraft insulation blankets ? Purpose, Location, Materials of insulation blankets.

 Aircraft Insulation blanket

When aircraft at high altitude, the outside temperature is about -60-degree Fahrenheit.

 In combination with pressurization, aircraft insulation material helps keep the cabin warm by filling the space between the interior wall and the aircraft fuselage.

 As we know that fire retardant material is must for all aircraft.

Purpose of Aircraft Insulation blanket

 The reason of choosing fire retardant material is to minimize the potential for a fire and help to prevent or slow flame spreads if a fire occur, which will provide maximum evacuation time and helps to ensure the safety of passengers and crew members. Although, It’s a requirement of regulator for manufacture that the interior material for aircraft should have self-extinguishing quality.

primary purpose of aircraft insulation blankets 

The primary purpose of aircraft insulation blankets is to protect the passengers and crew from engine noise and frigid temperatures at high altitudes. Like silver-lined household insulation, they often are backed with a transparent film that helps hold them together. The proposed airworthiness directive (AD) was prompted by the discovery . 

1.Protect passengers from frigid condition at high altitude

2.Minimize loss of heat from the fuselage

3.Stop the formation of condensation and

4.Reduce noise level in cabin.

5.Protect electronics component from condensed water.

6.It act as insulation material between fuselage structure and electrical component.

Location of Aircraft Insulation blanket

Insulation blanket normally installed on fuselage structure in pressurized area.

The Density of insulation blanket is vary depending on their location in an aircraft.

This is determined by design requirement  in order to comply with thermal and acoustic requirements of particular area.

Different thickness of insulation identified according colour of insulation blanket.

The areas where the affected insulation blankets are installed include, but are not limited to, the following areas:

(i)  Crown area of the airplane;

(ii) Areas behind flight deck panels and circuit breaker panels;

(iii) Areas behind sidewalls, lavatories, closets, and galleys;

(iv) Cargo compartment areas;

(v)  Air ducting;

(vi) Waste and water tubing; and

(vii)  Areas attached to the underside of floor panels

aircraft insulation blanket material

some insulation blankets, which are coated with a film called AN-26, no longer meet the standards for preventing the spread of fire.

aircraft engine insulation blankets

A thermal insulation blanket for an aircraft engine, and processes for producing the thermal insulation blanket to have low thermal conductivity and high temperature capability.
 The thermal insulation blanket has a layered construction that includes an aerogel insulation material, a composite layer disposed at a first surface of the aerogel insulation material, and a backing layer disposed at an opposite surface of the aerogel insulation material so that the aerogel insulation material is encapsulated between the composite and backing layers.
 The composite layer contains a resin matrix material reinforced with a fiber reinforcement material.