Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi

Aselsan Elektronik Sanayi Ve Ticaret Anonim

Ozgur Birer

Hansu Birol

Mustafa Fatih Akbostanci

Mehmet Erim Inal

Sebnem Sayginer

Akin Dalkilic

A method for constructing multiple ceramic layers by winding continuous ceramic filaments of identical composition to prepare multilayer RF-transparent structures is provided. In the method, identical continuous ceramic filaments are wound to construct a layer with specific dielectric constant according to patterns, characterized by the winding angle, winding density/inter-fiber aperture and winding count/layer thickness. Layers with same or different dielectric characteristics forms a sandwich design to fulfill the desired mechanical, thermal and electrical requirements.

Fabrication method of multilayer ceramic structures by continuous filaments of identical composition

A method for constructing multiple ceramic layers by winding continuous ceramic filaments of different compositions to prepare multilayer RF-transparent structures is provided. In the method, different continuous ceramic filaments are braided to construct layers with specific dielectric constants and braiding count/thickness. Layers with same or different dielectric characteristics forms a sandwich design to fulfill the desired mechanical, thermal and electrical requirements.

Fabrication of multilayer ceramic structures by continuous filaments of different composition

A method for constructing a plurality of ceramic layers by winding continuous ceramic filaments to prepare RF-transparent structures is provided. Dielectric properties of each layer of the plurality of ceramic layers are characterized by an inter-filament spacing, a filament count and thickness. Once the plurality of ceramic layers are constructed, a structure is removed from a winding surface, wherein the winding surface is a mandrel, infiltrated with a resin in a separate set up and fired.

Fabrication method of functionally-graded structures by continuous ceramic filaments

A test method for determining impact effects and abrasion effects of particles such as rain, hail, dust, ice, sand, and micrometeoroids at speeds above Mach, i.e., higher than the speed of sound. The test method includes the steps of placement of balls in capsules, firing the capsules with a rifle firing system, hitting of the fired capsules and/or the balls to a target inside a firing range, recording the impact effects during a firing with a recording system, determining a durability and a lifetime of a test sample of test samples by calculating a number of the balls hitting the target and a number of shots providing an effect.

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Ankara, Turkey

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