Longitudinal Flight Dynamics of Bioinspired Ornithopter Considering Fluid-Structure Interaction

Lee, Ji Min; Kim, Joong-Kwan; Kim, Dae-Kwan; Han, Jae‐Hung

doi:10.2514/1.53354

Cited by 49 publications

(37 citation statements)

References 19 publications

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“…Figure 5.2 shows an example of the errors and the total cost for a solution, which required approximately 200 iterations before convergence, although solutions were close after about 50 iterations. This is a simple method to trim to the ornithopter; other more complicated methods in the literature include multiple shooting algorithms [25] and monitoring mean values of flight variables after an initial launching force vector is supplied [28]. The ornithopter was trimmed for a range of flapping frequencies between 4 Hz and 10 Hz.…”

Section: Determining Trim Solutionsmentioning

confidence: 99%

Simulation results

Grauer¹

2013

Flight Dynamics and System Identification for Modern Feedback Control

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Section: Determining Trim Solutionsmentioning

confidence: 99%

Simulation results

Grauer¹

2013

Flight Dynamics and System Identification for Modern Feedback Control

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“…To overcome the detrimental effects of this altered phase relationship, a different phase relation from that of a rigid wing must be commanded at the wing root [35].…”

Section: Effect Of Wing Flexibility On Force Productionmentioning

confidence: 99%

A Flight Mechanics-Centric Review of Bird-Scale Flapping Flight

Paranjape¹,

Dorothy²,

Chung³

et al. 2012

International Journal of Aeronautical and Space Sciences

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This paper reviews the flight mechanics and control of birds and bird-size aircraft. It is intended to fill a niche in the current survey literature which focuses primarily on the aerodynamics, flight dynamics and control of insect scale flight. We review the flight mechanics from first principles and summarize some recent results on the stability and control of birds and bird-scale aircraft. Birds spend a considerable portion of their flight in the gliding (i.e., non-flapping) phase. Therefore, we also review the stability and control of gliding flight, and particularly those aspects which are derived from the unique control features of birds.

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“…Although several previous studies showed the effect of flexible wings on the aerodynamics 1,2 and flight dynamics 3,4 , less research has been performed about the relationship between a deformable body and the flight stability. Previous research revealed that the whole structure of a flying insect deforms during the flight and suggested that the deformation of the body, such as the abdomen, may play an important role in longitudinal flight dynamic stability of a flying insect.…”

Section: Introductionmentioning

confidence: 99%

The effect of the abdomen deformation on the longitudinal stability of flying insects

et al. 2015

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In this paper, we derive longitudinal nonlinear equations of motion of a hovering insect with deformable abdomen to investigate the effect of the abdominal motion to the longitudinal dynamics. The blade-element theory, which is based on experimentally obtained aerodynamic coefficients, is used for the periodic force and moment excitation to the system. Here, we focus on the role of the deformable abdomen to investigate whether or not the flexible body is a decisive factor to the longitudinal flight dynamic stability. Three cases: 1) rigid connection between the thorax and abdomen, 2) flexible connection, and 3) active connection with a feedback control, are compared to check the role of the abdomen deformation on the longitudinal flight dynamic stability, by examining eigenvalues of the linearized system model of each case. The results show that an active control of the abdominal angle can stabilize the longitudinal flight dynamics of the insect modeled in this study.

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Longitudinal Flight Dynamics of Bioinspired Ornithopter Considering Fluid-Structure Interaction

Cited by 49 publications

References 19 publications

Simulation results

Simulation results

A Flight Mechanics-Centric Review of Bird-Scale Flapping Flight

The effect of the abdomen deformation on the longitudinal stability of flying insects

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