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Possibilities of Using Low-Density C–C Composites for Thermal Protection of Small Unmanned Aerial Vehicles Cover

Possibilities of Using Low-Density C–C Composites for Thermal Protection of Small Unmanned Aerial Vehicles

Open Access
|Jun 2023

Figures & Tables

Figure 1.

Viscose fibre general appearance and chemical formula.

Figure 2.

CFC based on viscose. CFC, carbonised carbon fibres.

Figure 3.

Appearance of viscose fibre before crushing, ×2.

Figure 4.

The change in the modulus of elasticity of low-density CCCM depending on the carbonisation temperature. CCCM, carbon–carbon composite materials.

Figure 5.

Dependence of shrinkage of low-density CCCM on carbonisation temperature. CCCM, carbon–carbon composite materials.

Figure 6.

Change in the compressive strength limit of low-density CCCM as a function of the carbonisation temperature. CCCM, carbon–carbon composite materials.

Main physical and mechanical characteristics of low-density CCCM_

NameIsostatic technologyMethod of draining aqueous suspension
Material density (apparent) (g/m3)0.45–0.750.17–0.21
Temperature factor of linear expansion (1/K)(5.5–6.1)·10−6(4.3–5.3)·10−6
Compression strength limit (MPa)0.60–0.800.70–1.10
0.85–1.050.84–1.25
Carbon content (%)99.699.6
Thermal conductivity coefficient (W/(m·K); at 2,000 K)0.55–0.800.45–0.55

Mechanical properties of carbon fibres_

Type of raw materialDensity (g/cm3)Young’s modulus (GPa)Tensile strength (MPa)Strain at breaking (%)
Viscose cord fibres1.60405001.25
PAN fibres1.802304,5002.00
Pitch fibres2.005202,1000.40
Language: English
Page range: 45 - 57
Submitted on: Oct 12, 2022
Accepted on: Apr 11, 2023
Published on: Jun 12, 2023
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2023 Taras Yanko, Roman Datsenko, Hanna Karpenko, published by ŁUKASIEWICZ RESEARCH NETWORK – INSTITUTE OF AVIATION
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.