飞机起落架

To study the taxiing-induced dynamic response of the aircraft with multiple wheels and multiple landing gears due to runway unevenness, base on several reasonable and necessary assumptions, the mathematical model of aircraft in taxiing is established using the d'alembert's principle. It can simulate taxiing inpact properties accurately, it considers in detail the vertical and horizontal motion and pitching about its center of gravity and the significant symmetric elastic modes.

在一些必要合理的假设下，利用达朗贝尔原理，建立了多轮多支柱式及小车式起落架飞机地面滑跑动态响应分析的全机模型，考虑全机沉浮、机体弹性和定常气动力的影响，起落架支柱的弹性变形，小车式起落架的车架的俯仰运动以及弹性变形，对等速滑跑飞机建立了全机运动的微分方程，并以旧金山28-R跑道为地面输入，利用时域积分的方法得到飞机滑跑的各种响应。

Also be aware that changing the orientation or size of a parent part changes all of it's "children" as well. If you shrink the WingRin for instance, the whole wing, plus engines and landing gear will shrink with it. Changing the CF_D0 will usually affect the whole plane. Speaking of the CF_D0, this is the most important part of the plane. All the other parts are connected to it, and reorienting it can sometimes cause the plane to fly incorrectly. Not all plane parts are oriented properly in the first place, so simply replacing the CF_D0 in the folder might lead to a fuselage 90 degrees off angle, etc, but changing the orientation sometimes changes the flight profile, etc.

同样要注意你改变"父模型"的方向或尺寸的话依附它的"子模型"也会跟着改变，如果你缩小机翼，那么机翼上的发动机和起落架会跟着缩小，改变CF_D0通常会影响整个飞机，说到CF_D0，它通常是整个飞机最重要的部分，其他的部分都依附于它，改变它有时会使飞机飞行不正常，通常第一次导入不是说有的部分都能准确定位，所以简单的替换CF_D0可能会导致机身偏转90度，而有时后改变方位会影响飞行轨迹，这是很让人头疼的。

The aircraft landing sinking speed is one of the major parameters during undercarriage design and undercarriage strength inspection of the aircraft design typing flight test.

飞机着陆下沉速度是起落架设计和飞机设计定型试飞的起落架强度检查中的最主要的参数之一。

In the design of landing gear's joint on traditions, devisers usually did the same work repeatedly, that affects the design efficiency.

在传统的飞机起落架耳片设计过程中，设计人员在此期间要做大量的重复性工作，影响设计效率。

The landing gear of an aircraft .It is the pilot putting the wheel down.

那是飞行员在放下飞机起落架的声音。

Put on your seat belt.It is the pilot putting the wheel down.

那是飞行员在放下飞机起落架的声音。

In operating a plane having pontoons for landing gear up to this time the pontoon has served a single purpose --- that is, to act as a float upon which a plane could be landed in the water and upon which it would rest due to the buoyancy of the pontoon when the plane was not being used.

在经营飞机后，浮筒为起落架到这时候，浮桥已送达一个单一的目的---是，作为浮动后，其中1架飞机可降落在水中和后，它将休息，由于该浮力的浮桥时，这架飞机是不是被使用。

"Until this year, we''ve always changed gears during C checks," said Neves, but to accommodate them now we might have to take an aircraft off-line.

萄葡牙航空公司称，直到2007年，一直在C检中更换起落架。但目前，只能让飞机非计划停场，才能实施起落架更换。

The equivalent linearization results obtained by probabilistic method are inducted to treat landing gear non linear parameters such as shock absorber air spring force, hydraulic damping and C.

建立了飞机地面滑跑的起落架分析模型；引入了概率平均意义上的当量线性化方法，用该方法处理了起落架缓冲器空气弹簧、油液阻尼和库仑摩擦力以及轮胎刚度和阻尼等非线性参数。

The results show that the loads from landing gear to aircraft body are obviously reduced by using active control technology. The motion of aircraft CG and the variation of pitch angle are more stable, and the strut load and strut stroke of landing gear can be maintained in a range of static equilibrium condition.

计算结果表明，主动控制技术可明显降低起落架传给机身的载荷，隔离由地面产生的振动，使飞机重心运动和俯仰角变化更加平稳，使起落架支柱载荷和行程位移尽量保持在静态平衡状态的一定范围之内。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。