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Efficiency and Fatigue/Endurance Laboratory Tests of Aviation Friction Brakes

Fatigue of Aircraft Structures
Volume 2022 (2022): Issue 14 (December 2022)
By:
Open Access
|Nov 2023

Figures & Tables

Figure 1.

Example of aircraft brake. Source: https://commons.wikimedia.org/wiki/File:Aircraft_brake_MD-11_cut-out_half-side.jpg
Example of aircraft brake. Source: https://commons.wikimedia.org/wiki/File:Aircraft_brake_MD-11_cut-out_half-side.jpg

Figure 2.

Normal operation of the brake. Source: CharlieBay101 Aviation Broadcast Channel
Normal operation of the brake. Source: CharlieBay101 Aviation Broadcast Channel

Figure 3.

Burning aircraft brake. Source: The Aviation Geek Club https://theaviationgeekclub.com/watch-this-video-featuring-a-c-5m-super-galaxy-experiencing-brake-fire-at-oshkosh-airventure-2019/
Burning aircraft brake. Source: The Aviation Geek Club https://theaviationgeekclub.com/watch-this-video-featuring-a-c-5m-super-galaxy-experiencing-brake-fire-at-oshkosh-airventure-2019/

Figure 4.

Friction materials/brake linings of aircraft brake. Source: Landing Gear Laboratory, Ł-ILot.
Friction materials/brake linings of aircraft brake. Source: Landing Gear Laboratory, Ł-ILot.

Figure 5.

IL-68 friction materials dynamic test stand – test sample area. Source: Landing Gear Laboratory, Ł-ILot.
IL-68 friction materials dynamic test stand – test sample area. Source: Landing Gear Laboratory, Ł-ILot.

Figure 6.

Example of friction material test results – test parameters: moment of inertia I = 0.510 kg/m2, initial speed ns = 6000 rpm, braking force Fd = 70 daN. Source: Skorupka, Z. (2015). Impact of Temperature on Braking Torque of Vechicle’s Friction Brake. Institute of Aviation.
Example of friction material test results – test parameters: moment of inertia I = 0.510 kg/m2, initial speed ns = 6000 rpm, braking force Fd = 70 daN. Source: Skorupka, Z. (2015). Impact of Temperature on Braking Torque of Vechicle’s Friction Brake. Institute of Aviation.

Figure 7.

M3T/6T test stand – example of an armored full-scale brake test. Source: Landing Gear Laboratory, Ł-ILot.
M3T/6T test stand – example of an armored full-scale brake test. Source: Landing Gear Laboratory, Ł-ILot.

Figure 8.

M3T/6T test stand – example aircraft LG test. Source: Landing Gear Laboratory, Ł-ILot.
M3T/6T test stand – example aircraft LG test. Source: Landing Gear Laboratory, Ł-ILot.

Figure 9.

Example of full-scale dynamic brake test results – test parameters: moment of inertia I = 588 kg/m2, initial speed ns = 600 rpm, braking force Fd = 11 kN. Source: Skorupka, Z. (2015). Impact of Temperature on Braking Torque of Vechicle’s Friction Brake. Institute of Aviation..
Example of full-scale dynamic brake test results – test parameters: moment of inertia I = 588 kg/m2, initial speed ns = 600 rpm, braking force Fd = 11 kN. Source: Skorupka, Z. (2015). Impact of Temperature on Braking Torque of Vechicle’s Friction Brake. Institute of Aviation..

Figure 10.

Diagram of brake caliper endurance test. Source: Landing Gear Laboratory, L-ILot.
Diagram of brake caliper endurance test. Source: Landing Gear Laboratory, L-ILot.

Figure 11.

Burning brake in RTO test. RTO, rejected takeoff. Source: https://youtu.be/KlpJTGAv2Oc
Burning brake in RTO test. RTO, rejected takeoff. Source: https://youtu.be/KlpJTGAv2Oc
DOI: https://doi.org/10.2478/fas-2022-0008 | Journal eISSN: 2300-7591 | Journal ISSN: 2081-7738
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Language: English
Page range: 104 - 113
Published on: Nov 28, 2023
Published by: Institute of Aviation
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
fatigue,
endurance,
brakes,
friction material,
landing gears,
laboratory tests,
dynamic testing
Related subjects:
Engineering,
Introductions and overviews,
Engineering, other

© 2023 Zbigniew Skorupka, published by Institute of Aviation
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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