Date of Award

5-2024

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Aerospace, Physics, and Space Sciences

First Advisor

Ralph D. Kimberlin

Second Advisor

Daniel R Kirk

Third Advisor

Brooke E Wheeler

Fourth Advisor

Ratneshwar Jha

Abstract

As aircraft brakes are subjected to intense heat generation during landings and braking maneuvers, comprehending the temperature dynamics is essential for ensuring optimal performance, longevity, and, most importantly, the safety of flight operations. This paper dives into understanding heating and cooling in the brake systems of the Piper Aircraft PA28. In order to investigate the thermal behavior of aircraft brake components, this study evaluates a variety of general aviation braking scenarios, from light to heavy braking, including stop-and-go landings, full-stop taxi backs, and continuous braking while taxiing. It was noticeable that light braking exhibits slight temperature increases and cooling rates. Moderate braking demonstrates an intermediate thermal response, offering adequate stopping distance without excessive temperature rise. Heavy braking resulted in the highest temperature increases and cooling rates. Thermal inertia is evident during stop-and-go situations, where heat generation from friction may outpace cooling effects. Continuous braking during taxiing had the highest risk, with temperatures exceeding recommended limits for prolonged durations, especially when combined with heavy braking for landings. However, the brakes tended to return near ambient temperature during flights, proving that multiple stop-and-go operations are unlikely to overheat the brakes. Wind direction is related to cooling rates, with the windward side cooling faster. These findings underscore the importance of braking techniques and management to mitigate thermal stress on aircraft brakes.

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