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Optimized flapping flight in Venus surface atmospheric conditions (CROSBI ID 305343)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Terze, Zdravko ; Kasalo, Marko ; Pandža, Viktor ; Zlatar, Dario Optimized flapping flight in Venus surface atmospheric conditions // Acta astronautica, 194 (2022), 83-92. doi: 10.1016/j.actaastro.2022.01.031

Podaci o odgovornosti

Terze, Zdravko ; Kasalo, Marko ; Pandža, Viktor ; Zlatar, Dario

engleski

Optimized flapping flight in Venus surface atmospheric conditions

Three recently approved space missions are headed towards Venus, to help answer major questions about Venus atmosphere and geology. However, many existing questions cannot be properly addressed without direct in situ measurements from Venus surface or within the atmosphere. To this end, flapping wing vehicle concept is selected, optimized for Venus atmospheric flight, and evaluated using energy efficiency as performance criteria. Flapping wing vehicle computational model is derived based on discrete variational mechanics and quasi-steady aerodynamics, with all relevant aerodynamic phenomena included. Flapping wing vehicle computational model is then embedded within optimization algorithm, which is utilized to obtain energy efficient flapping patterns for forward flight in Venus atmospheric surface conditions. Numerical optimization is performed for different neutrally buoyant configurations, with wingspan ranging from 10 mm to 1 m. Different forward velocities are used as well, where maximum velocity is limited by an advance ratio of 0.5. Bumblebee and hummingbird-sized vehicles, with a wingspan of 30 mm and 30 cm, are selected as the most representative test cases and thoroughly studied. It is proved that flapping wing propulsion is a feasible and effective concept for Venus exploration purposes. Finally, based on a comparison of the selected test cases general conclusions are drawn on the flapping wing dynamics and flight mechanics strategies in the Venus atmosphere. Significant difference in the propulsion mechanism has been observed, based on the aerial vehicle size. In order to maximize propulsive efficiency, the smaller vehicle mostly exploited aerodynamic forces related to the leading edge vortex, while the larger vehicle relied more on added mass and rotational forces.

Venus atmospheric flight ; Flapping wing ; Forward flight dynamics ; Optimization ; Quasi-steady aerodynamic model ; Discrete mechanics and optimal control

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Podaci o izdanju

194

2022.

83-92

objavljeno

0094-5765

1879-2030

10.1016/j.actaastro.2022.01.031

Povezanost rada

Zrakoplovstvo, raketna i svemirska tehnika

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