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Mechanical Engineering

Static Thrust Testing in Propulsion Systems

Description

Propulsion systems create thrust by speeding up a surrounding fluid or high-temperature combustion products. Aircraft, rockets, and ships all use this basic idea. When the fluid leaves at high velocity, conservation of momentum produces an effective force on the vehicle.

Thrust is often checked w...

Transcript

流体推进系统在机械设计中无处不在,每当需要在机械系统和流体之间施加相对力时,都会使用流体推进系统。所有空气和水上交通工具都采用流体推进系统来提供加速和转向周围流体所需的推进力或推力。不过,它们的用途不仅限于车辆。固定系统(如 HVAC 设备)也使用推进系统。但在这些情况下,它们驱动流体本身的循环。该视频将说明开放式作流体推进系统(包括螺旋桨和风扇)如何产生推力。并演示如何在实验室中估计和测量推力和推力效率。

来自开放式作流体推进系统(例如飞机螺旋桨或船螺旋桨)的推力是通过将环境流体加速到高速而产生的。这些系统从大型上游区域吸入流体,并以狭窄的射流形式将其排放到下游。流出面积与螺旋桨表面的面积大致相同。让我们看看如何通过采用控制音量方法产生推力。首先沿着螺旋桨周围的流线构建一...

Tags

Propulsion SystemsThrust MeasurementStatic Thrust TestFluid PropulsionThrust EfficiencyMomentum ConservationOutflow VelocityTest Stand AssemblyThrust CalculationPower Input

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