Bats actively modulate membrane compliance to control camber and reduce drag.
Bats actively modulate membrane compliance to control camber and reduce drag.
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蝙蝠会主动调节膜的依从性，以控制倾角并减少阻力。
DOI：
10.1242/jeb.243974
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发表时间：
2022-07-15
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影响因子：
--
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蝙蝠翅膀的皮肤非常柔顺，在飞行过程中会明显弯曲。 Plagiopatagiales propri 是嵌入臂翼膜中的一系列小肌肉，在飞行过程中被激活，并被认为可以调节膜张力。我们使用牙买加果蝠 Artibeus jamaicensis 检查了这些肌肉的功能。当使用肉毒杆菌毒素麻痹这些肌肉时，蝙蝠的飞行速度会降低，并且无法以非常低的速度飞行。斜翼的麻痹还导致臂翼弯度增加，这与调节气动弹性相互作用的假设作用一致。其他补偿运动学包括增加下冲角度和增加翼拍幅度。这些结果与蝙蝠因翼膜控制丧失而增加的阻力和飞行动力成本相一致。我们的结果表明，牙买加A. jamaicensis在持续飞行过程中可能总是利用其翼膜肌肉来控制弯度并提高在宽飞行包线内的飞行效率。 蝙蝠翼皮嵌入肌肉的暂时麻痹显着增加了翼膜的弧度，降低了首选飞行速度并防止了非常慢的飞行，凸显了它们在控制、效率和扩大飞行包线方面的作用。
Bat wing skin is exceptionally compliant and cambers significantly during flight. Plagiopatagiales proprii, arrays of small muscles embedded in the armwing membrane, are activated during flight and are hypothesized to modulate membrane tension. We examined the function of these muscles using Jamaican fruit bats, Artibeus jamaicensis. When these muscles were paralyzed using botulinum toxin, the bats preferred flight speed decreased and they were unable to fly at very low speeds. Paralysis of the plagiopatagiales also resulted in increased armwing camber consistent with a hypothesized role of modulating aeroelastic interactions. Other compensatory kinematics included increased downstroke angle and increased wingbeat amplitude. These results are consistent with the bats experiencing increased drag and flight power costs associated with the loss of wing-membrane control. Our results indicate that A. jamaicensis likely always employ their wing membrane muscles during sustained flight to control camber and to enhance flight efficiency over a wide flight envelope. Temporary paralysis of wing-skin-embedded muscles in bats significantly increases wing-membrane camber, reduces preferred flight speed and prevents very slow flight, highlighting their role in control, efficiency and expanding the flight envelope.
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影响因子：
64.8
作者：
Tobalske, BW;Hedrick, TL;Biewener, AA
通讯作者：
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影响因子：
2.8
作者：
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DOI：
10.1177/1045389x12470303
发表时间：
2013-05-01
影响因子：
2.7
作者：
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通讯作者：
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影响因子：
2.8
作者：
Konow, Nicolai;Cheney, Jorn A.;Swartz, Sharon M.
通讯作者：
Swartz, Sharon M.