Effective Damping of Resonant Liquid Fuel Splashes in Aircraft Tanks

Authors

DOI:

https://doi.org/10.20535/2521-1943.2026.10.2(109).349810

Keywords:

damping, fuel splashing, aircraft, resonant oscillations, fuel tanks, dynamic stability, numerical modeling, perforated baffles

Abstract

The article is devoted to the study of methods for effective damping of resonant splashes of liquid fuel in aircraft tanks. Modern designs of dampers, their advantages and disadvantages are considered. An important role is played by the mass and geometry of the baffles, which can cover up to 73 % of the volume of the entire tank, while significantly increasing its mass, which has a very negative effect on the hydrodynamic mechanism of the development of inertial flows. The influence of fuel splashes on the flight dynamics and stability of the aircraft is analyzed. Optimal design solutions are proposed to reduce the amplitude of liquid oscillations in tanks of various configurations and force effects on the structures of internal damping devices, which can occupy almost 45 % of the volume of the entire tank.
The results of numerical modeling and experimental studies are presented, confirming the effectiveness of the developed methods. The accuracy of numerical modeling is also determined by the size of the cells in the most dynamic flow regions, where, for example, there are large differences in parameters, in particular velocities. It is shown that the use of optimized damping devices allows you to reduce the amplitude of resonant oscillations by 75–80 % with an increase in the mass of the structure by no more than 3 %.
Analysis of the hydrodynamic mechanism of the development of inertial flows in the tank allows you to predict the distribution of such force parameters as hydrostatic pressures on the tank walls, the distribution of average velocity in characteristic zones, in particular over time. Such flow parameters allow you to establish quite complex nonlinear features of flows and predict their development and force effects on the design of a tank with baffles. Resonant fluctuations of the liquid in tanks allow you to fairly accurately determine the force effects of the flow on the internal structures of tanks and establish the magnitude of shock pressures on the internal structures.

References

  1. літальні апарати, резонансні коливання, паливні баки,

Published

2026-06-18

How to Cite

[1]
V. . Kovalev, “Effective Damping of Resonant Liquid Fuel Splashes in Aircraft Tanks”, Mech. Adv. Technol., vol. 10, no. 2(109), Jun. 2026.

Issue

Vol. 10 No. 2(109) (2026): in progress

Section

Aviation Systems and Technologies

License

Copyright (c) 2026 Василь Ковальов

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The ownership of copyright remains with the Authors.
 
Authors may use their own material in other publications provided that the Journal is acknowledged as the original place of publication and National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” as the Publisher.

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under CC BY 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work