Theoretical and Natural Science
- The Open Access Proceedings Series for Conferences
Series Vol. 5 , 25 May 2023
* Author to whom correspondence should be addressed.
Gliders are heavier-than-air fixed-wing aircraft that do not rely on power plants to fly, and are now widely used in scientific observation, daily entertainment, and other fields. After taking off, it only relies on the reaction force of air acting on its lifting surface for free flight. Different gliders can stay in the air for different amounts of time in different environments, which is mainly determined by the airfoil. Therefore, through literature reading, this paper understands its flight principle, and studies and analyzes the advantages and disadvantages of existing airfoils by comparing the influence of different airfoils on flight performance. In view of the problems existing in the airfoil, rationality calculations and improvements are put forward, hoping to promote the development of the aviation industry. After research, the concave wing is by far the most suitable gliding airfoil, which can provide relatively large lift and stability, but there is still the problem of insufficient load. In order to improve these deficiencies, the airfoil is optimized by increasing the contact area between the airflow and the wing. For example, the defect can be improved by lengthening the length of the entire wing, reducing lateral airflow, and increasing the upward curvature of the wingtip.
glider, airfoil, Glide stability, aerodynamics, Bernoulli's Principle.
1. Azuma, A. (1992). Flight By Gliding. In: The Biokinetics of Flying and Swimming. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68210-3_3.
2. Horvath, J., Cameron, R. (2016). Airfoils. In: 3D Printed Science Projects. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-1323-0_4
3. Peiqing Liu. (2022). Aerodynamics. Springer Singapore. https://doi.org/10.1007/978-981-19-4586-1.
4. Kravets, V.V., Shvets, A.I.(1983). Separation flows on a concave conical wing. Fluid Dyn 18, 235–242 . https://doi.org/10.1007/BF01091111.
5. Isaev, S.A., Sudakov, A.G., Usachov, A.E. (2015). et al. Modeling an increase in the lift and aerodynamic efficiency of a thick Göttingen airfoil with optimum arrangement. Tech. Phys. Lett. 41, 561–564 . https://doi.org/10.1134/S1063785015060061.
6. Bai, Xr., Cheng, Hy., Ji, B. et al. (2020). Spatial and spectral investigation of turbulent kinetic energy in cavitating flow generated by Clark-Y hydrofoil. J Hydrodyn 32, 175–178. https://doi.org/10.1007/s42241-020-0009-1.
7. Zhao, L., Wang, P., Sun, Cy. et al.(2019). Modeling and Motion Simulation for A Flying-Wing Underwater Glider with A Symmetrical Airfoil. China Ocean Eng 33, 322–332. https://doi.org/10.1007/s13344-019-0031-7.
8. Deng, Q., Gursul, I. (1997). Vortex breakdown over a delta wing with oscillating leading edge flaps. Experiments in Fluids 23, 347–352 . https://doi.org/10.1007/s003480050121.
9. Gallais, P. (2007). Aerodynamics. In: Atmospheric Re-Entry Vehicle Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73647-9_4.
10. Leloudas, S.N., Eskantar, A.I., Lygidakis, G.N. et al. (2020). Low Reynolds airfoil family for small horizontal axis wind turbines based on RG15 airfoil. SN Appl. Sci. 2, 371. https://doi.org/10.1007/s42452-020-2161-1.
11. Gao, L. (2022). Wind Tunnel Test. In: Cui, W., Fu, S., Hu, Z. (eds) Encyclopedia of Ocean Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-6946-8_265.
The datasets used and/or analyzed during the current study will be available from the authors upon reasonable request.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. Authors who publish this series agree to the following terms:
1. Authors retain copyright and grant the series right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this series.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the series's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this series.
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 (See Open Access Instruction).