Airplane fuel-tank swap oil characteristic optimization method based on smoothed particle hydrodynamics
A technology of fluid dynamics and aircraft fuel tanks, applied in constraint-based CAD, special data processing applications, instruments, etc., can solve problems such as redundant oil performance, reduce oil body fluctuation suppression, and reduce the strength of bearing structures, etc., to achieve Improve the flight control performance, speed up the reaction speed, and increase the quality of the effect
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[0064] The present invention will be further described below in conjunction with accompanying drawing and embodiment, and embodiment adopts the rectangular parallelepiped fuel tank that dividing plate is evenly arranged.
[0065] The method for optimizing the characteristics of oil leakage in aircraft fuel tanks based on smooth particle hydrodynamics includes the following steps:
[0066] 1) Small liquid filling ratio fuel tank partition design:
[0067] Since the liquid level of the small liquid filling ratio tank is more likely to sway, the liquid level has a larger amplitude, and the time to calm down is longer, so this embodiment first takes the small liquid filling ratio as the priority design working condition, and defines 30% of the liquid filling ratio as the small In the working condition of the filling ratio, this embodiment studies the extreme working condition that the aircraft returns to the level flight state from a roll angle of 15 degrees. figure 1 As shown, t...
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