Alongside with the engines air inlets and exhausts, fighter aircrafts canopies (commonly made out of PMMA) are essential parts of the craft and need to be properly protected. For covering those damage-sensitive parts, OTEGO has designed a material to prevent FODs (Foreign Object Debris), weather aggression (UV, sand, snow, ice and humidity) and “crazing effect” on PMMA canopies.
When not protected, fighter aircraft canopies can be damaged by physical objects (sand storms, ice hail, foreign object impacts) or by harsh environments (humidity and saline environment). Canopy covers made out of PVC are sometime used by default, but are not recommended for such applications. Exposed to high temperature, the plasticizers naturally contained in PVC tarpaulins can migrate and blur the visibility of the canopy by interacting with the PMMA.
That is the reason why the selection of the material in which the cover will be made from, is as essential as the cover itself.
OTEGO CANOPY COVER FABRIC FEATURES :
Non-abrasive “anti-crazing” properties : our fabric is soft on the inside. It avoids any friction on the canopy and the crazing effect.
Heat/cold resistant fabric
UV Resistant fabric
FIGHTER AIRCRAFT INLET & EXHAUST COVER
During storage and maintenance (and even during production) the inlet and exhaust of the fighter engine need to be protected against :
Corrosion
FOD (Foreign Object Damage)
Our fabric is especially adapted to this application and features :
Heat-resistant
Fire resistant : FAR25.853
Soft contact : The fabric is not abrasive.
SUM UP
2 main applications:
Canopy cover
Inlet/exhaust cover
Strengths of the fabric :
Heat/cold Resistant
Fire Resistant (FAR25.853)
Anti-crazing properties
OTEGO fabric is approved by Dassault on the Mirage 2000 & Rafale.
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What is crazing effect ?
PMMA windshields & Canopies are subject to what we call the crazing.
The crazing is made of 2 effects :
1. Scratches
Abrasion/friction with an average cover – A poor cover will abrase the surface of the PMMA and damages it. When the canopy or windshield is not covered, external elements such as sand can abrase the surface and create scratches. Those scratches reduce the visibility and comfort of the pilot.
2. Milky effect
If the windshield or canopy is covered with a PVC tarp or a non-neutral coated fabric, it will conduct to a chemical migration.
PVC tarps contain Chlorine and plasticizers that will migrate in the PMMA and this “milky” effect will appear. Also, if the helicopter is not covered during storage, saline humidity can have the same effect.
This milky effect will also decrease the visibility of the pilot.
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Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistic
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.