Dragondrop: a novel passive mechanism for aerial righting in the dragonfly.
Dragondrop: a novel passive mechanism for aerial righting in the dragonfly.
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DOI：
10.1098/rspb.2020.2676
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发表时间：
2021-02-10
期刊：
影响因子：
--
通讯作者：
Lin HT
中科院分区：
文献类型：
--
作者：
Fabian ST;Zhou R;Lin HT
蜻蜓在追逐目标时会进行戏剧性的空中机动，但在巡航飞行时会滑翔一段时间。这使得蜻蜓成为一个伟大的系统，以探索被动稳定机制的作用，不妥协的机动性。我们挑战蜻蜓下降，他们从选定的倒置的态度，并收集6度的自由空中恢复运动学通过自定义动作捕捉技术。从这些运动学数据中，我们进行了刚体逆动力学重建的力量和力矩参与扶正行为。我们发现，倒置蜻蜓通常恢复自己与最短的旋转从最初的身体倾斜。此外，尽管横滚轴的转动惯量较低，但它们表现出很强的上仰倾向，头部伸出机动范围。令人惊讶的是，被麻醉的蜻蜓也能可靠地完成空中翻正。这种被动扶正在刚死亡的蜻蜓身上消失了，但可以通过给它们的翅膀上蜡到麻醉的姿势来部分恢复。我们的运动学数据，逆动力学模型和风洞实验表明，长腹和翅膀的姿态产生的旋转趋势和被动姿态恢复机制下降。这项工作展示了一个飞行昆虫的空气动力学稳定的身体配置，并提出了新的问题，在感觉运动控制的小型飞行系统。
Dragonflies perform dramatic aerial manoeuvres when chasing targets but glide for periods during cruising flights. This makes dragonflies a great system to explore the role of passive stabilizing mechanisms that do not compromise manoeuvrability. We challenged dragonflies by dropping them from selected inverted attitudes and collected 6-degrees-of-freedom aerial recovery kinematics via custom motion capture techniques. From these kinematic data, we performed rigid-body inverse dynamics to reconstruct the forces and torques involved in righting behaviour. We found that inverted dragonflies typically recover themselves with the shortest rotation from the initial body inclination. Additionally, they exhibited a strong tendency to pitch-up with their head leading out of the manoeuvre, despite the lower moment of inertia in the roll axis. Surprisingly, anaesthetized dragonflies could also complete aerial righting reliably. Such passive righting disappeared in recently dead dragonflies but could be partially recovered by waxing their wings to the anaesthetised posture. Our kinematics data, inverse dynamics model and wind-tunnel experiments suggest that the dragonfly's long abdomen and wing posture generate a rotational tendency and passive attitude recovery mechanism during falling. This work demonstrates an aerodynamically stable body configuration in a flying insect and raises new questions in sensorimotor control for small flying systems.
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影响因子：
2.8
作者：
Boerma, David B.;Breuer, Kenneth S.;Swartz, Sharon M.
通讯作者：
Swartz, Sharon M.
DOI：
10.1098/rspb.2020.1748
发表时间：
2020-10-28
期刊：
Proceedings. Biological sciences
影响因子：
--
作者：
Cheney JA;Stevenson JPJ;Durston NE;Song J;Usherwood JR;Bomphrey RJ;Windsor SP
通讯作者：
Windsor SP
DOI：
10.1073/pnas.1000615107
发表时间：
2010-03-16
影响因子：
11.1
作者：
Ristroph, Leif;Bergou, Attila J.;Cohen, Itai
通讯作者：
Cohen, Itai
DOI：
10.1007/bf00609936
发表时间：
1981-01-01
期刊：
JOURNAL OF COMPARATIVE PHYSIOLOGY
影响因子：
--
作者：
STANGE, G
通讯作者：
STANGE, G
振动控制： 昆虫飞行中隐藏的稳定机制
影响因子：
25
作者：
Taha, Haithem E.;Kiani, Mohammadali;Greeter, Jeremy S. M.
通讯作者：
Greeter, Jeremy S. M.