Influence of source data on fatigue estimation of a fighter aircraft

Aircraft structures during operation are exposed to fluctuating loads caused both by aerodynamic and inertial loads. This fluctuation leads to the creation of fatigue cycles, which gradually diminish the residual durability of the structure. During the design process, the flight envelope is defined...

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Bibliographic Details
Published in:Journal of KONBiN 2018-12, Vol.48 (1), p.301-322
Main Authors: Reymer, Piotr, Zieliński, Wojciech, Kurnyta, Artur
Format: Article
Language:English
Subjects:
Aging aircraft
Aircraft
Aircraft accidents & safety
Aircraft components
aircraft fatigue
Aircraft structures
Data recorders
Durability
Fighter aircraft
Flight
flight data acquisition
Flight data recorders
Load
Load fluctuation
load monitoring
Military aircraft
Recorders
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Summary:Aircraft structures during operation are exposed to fluctuating loads caused both by aerodynamic and inertial loads. This fluctuation leads to the creation of fatigue cycles, which gradually diminish the residual durability of the structure. During the design process, the flight envelope is defined as well as the design load spectrum, which then defines the durability of the structure (often expressed in means of flight hours). However, during the operation of an individual aircraft the actual load cycles can be significantly lower or higher than the designed; therefore, load monitoring is essential for safe operation of aircraft structures. The following article shows the results of fatigue analysis based on flight data from different flight data recorders for the Su-22 fighter aircraft.
ISSN:2083-4608
1895-8281
2083-4608
DOI:10.2478/jok-2018-0057