先进的飞行控制密封系统和应用

飞控密封系统

飞机飞行控制密封系统是特瑞堡密封系统的专业领域。 凭借50多年为在航空业服务的经验,特瑞堡密封系统公司能为您提供价值,性能和技术的公司。

我们开发了先进的密封聚合物和密封设计,经证明可满足飞行控制密封应用的要求。 其中包括新型耐磨,高压聚合物复合材料,新型弹簧施力密封技术和主动泵回吸密封技术。

*有关无排气执行器中主动泵回吸密封的优点说明,请咨询您当地的特瑞堡密封系统公司。

主要飞控

 舵机是飞行器飞行控制系统的重要组成部分,舵机系统是一个高精度的位置伺服系统。 舵机控制器工作原理是接受制导计算机给出的舵面偏角信号和反馈系统给出的舵面偏转信号,用它的输出指令来操纵舵面的偏转,从而改变飞行器的航行姿势或航行轨迹以达到控制飞行器飞行轨迹的目的。

舵面就是飞机的操纵面,一般是三个方向的操纵面,水平方向的叫升降舵,就是平尾,负责控制飞机升降,垂直方向的叫方向舵,一般在垂尾上面,负责控制飞机的航向,倾斜方向的叫副翼,一般在飞机机翼末端,负责控制飞机倾斜。

由于信号以电子方式产生并反馈到致动器,因此在致动器内部发生连续的运动和调节。 这种恒定的短行程,高频运动被称为抖动。 抖动冲程对密封件提出了特殊的要求。

所有飞机控制表面通常都是后缘型,这意味着控制面位于机翼的后部。升降机,方向舵和副翼不断受到控制,以保持飞行安全和飞机稳定性。

特瑞堡密封系统开发出先进的密封聚合物和密封设计,经证实可满足飞行控制密封应用的要求。其中包括新型耐磨,高压聚合物复合材料,新型弹簧施力密封技术和主动泵回吸密封技术。

*有关无排气执行器中主动泵回吸密封的优点,请咨询您当地的特瑞堡密封系统公司。

 

 

典型工况


工作压力达到3,000 psi,商用(空中客车A380和波音7E7)和军用(波音V-22,F / A-18 E / F)飞机应用,温度范围从-65°F到+275ºF,新开发的产品应用温度可达+325ºF(Lockheed Martin JSF F-35)。

流体通常是用于军事应用的Mil-PRF-83282,Mil-PRF-87257和Mil-H-5606以及用于商用的低密度(LD)、高密度(HD)和V型磷酸酯流体。


推荐产品

  • Dual Piston Rings
  • Excluder DC
  • Plus Seal II, Piston
  • Plus Seal II, Rod
  • T-Seal, Piston
  • Turcon® VL Seal
  • Variseal® M (V-spring-energized rod seal)
  • Variseal® W (Slantcoil energized rod seal)

推荐方案

活塞密封系统 1

在可控泄漏被接受的情况下,双活塞圈在窄沟槽中提供良好,可靠,低摩擦的解决方案,并具有最小的滞后性。

 活塞密封系统2

防止泄漏至关重要,GroovedPlusSeal®II具有出色的耐磨特性。 由于飞行控制性能至关重要,我们建议使用带有PlusSeal®II的挡圈以提高安全性。

主飞控高频活塞杆系统

 

串联TurconVlSeal®结合了低摩擦和防漏性能。 采用专利设计的主动 - 泵回吸用于主要和次要密封位置,可提供出色的密封系统性能,并具有低摩擦和防漏操作。 如有必要,Excluder®DC可为低压和静态待机操作提供额外的泄漏控制。

Secondary Flight Controls

Flight control

Secondary flight control surfaces are activated at different times during take off, flight and landing to maintain safe control of the aircraft during operation. Spoilers are used on very high lift/low drag aircraft like sailplanes, while spoilers are used to disrupt airflow over the wing and greatly reduce the amount of lift.

This allows a pilot to lose altitude without gaining excessive airspeed. Flaps are mounted on the back edge of each wing near the wing roots. They are deflected down to increase the effective curvature of the wing and produce additional lift, and they also reduce the stalling speed of the wing. They are used during low-speed, high-angle-of-attack flight like descent for landing. Slats are extensions to the front of a wing and are intended to reduce the stalling speed by altering the airflow over the wing.

Airbrakes are used on high-speed aircraft and are intended to increase the drag of an aircraft without altering the amount of lift. The secondary flight control surfaces are used at a much lower level or repeated cycles when compared to primary flight control surfaces. The secondary flight control surfaces include linear and rotary seal applications.

Aircraft Flight Control sealing systems are a Trelleborg Sealing Solutions specialty. With well over 50 years of experience in the aerospace industry, Trelleborg Sealing Solutions is your proven value, performance and technology company. 

We have developed advanced sealing polymers and seal designs that are proven to satisfy requirements for flight control sealing applications. These include new wear-resistant,high-pressure polymer compounds, new spring-energized seal technology and active back-pumping* seal technology.

*For an explanation on the benefits of active back-pumping seals in unvented actuators, please consult your Trelleborg Sealing Solutions contact.

Typical Operating Environment

Typical operating pressure reaches up to 3,000 psi, with new developments reaching 5,000 psi in both commercial (Airbus A380 and Boeing 7E7) and military (Boeing V-22, F/A-18 E/F) aircraft applications. Temperatures range from -65°F to +275ºF, with new developments reaching +325ºF (Lockheed Martin JSF F-35).

Fluids are typically Mil-PRF-83282, Mil-PRF-87257 and Mil-H-5606 for military applications and low density (LD), high density (HD) and Type V phosphate ester fluids for commercial applications.

Preferred Solutions

Pressure-Relieving Rod System 1

This system is designed to allow interstage pressure build-up to be relieved back into the system when the pressure drops. This solution features the Plus Seal® PR.

Pressure Relieving Rod System 2

This system is designed to allow interstage pressure build-up to be relieved back into the system when the pressure drops. This solution features the Variseal™ M.

Pressure Relieving Rod System 3

The Turcon® VL Seal® and Turcon® Wedgpak® system configuration offers the ideal pressure-relieving sealing system. Pressure trapped between the seals is prevented from leaking out of the system by the elastomer contact Wedgpak® secondary. During normal stroking operation the Turcon® VL Seal® tilts, allowing the oil back into the hydraulic circuit.