A test device suitable for acceleratory oblique water entry of a wedge has a frame, a water tank placed below the frame, an accelerator installed above the frame, an obliquing device connected to the frame, a wedge connected to the obliuqing device and an observation system. The frame is provided with vertical slide rails and a transverse slide rail. The accelerator mainly includes an air cylinder and an air compressor. The wedge is a flexible wedge or a rigid wedge. The observation system includes a pressure sensor, a strain sensor, a velocity sensor, an acceleration sensor and a particle image velocimetry device. The repeatability of the test process can be ensured by controlling the output pressure of the air cylinder.

A test device suitable for acceleratory oblique water entry of a wedge has a frame, a water tank placed below the frame, an accelerator installed above the frame, an obliquing device connected to the frame, a wedge connected to the obliuqing device and an observation system. The frame is provided with vertical slide rails and a transverse slide rail. The accelerator mainly includes an air cylinder and an air compressor. The wedge is a flexible wedge or a rigid wedge. The observation system includes a pressure sensor, a strain sensor, a velocity sensor, an acceleration sensor and a particle image velocimetry device. The repeatability of the test process can be ensured by controlling the output pressure of the air cylinder.

A testing equipment of an airplane air conditioning system is disclosed. The test equipment includes a sound receiver and a sound processor. The sound processor processes running noise of airplane air conditioning system sampled by the sound receiver to assess the operative condition of the system. The sound receiver samples environmental noise when the airplane air conditioning system is not running, and the sound processor de-noises the running noise by using the environmental noise.

A fixture is provided for securing an annular drone module to a test stand. The fixture includes a rear outside annulus, a front inside annulus, a plurality of tabs, and a plurality of flanges. The rear outside annulus extend radially to an outer rim and longitudinally from an aft surface and a lip surface. The front inside annulus extends radially to a mezzanine rim and longitudinally from the lip surface to a fore surface. The tabs extending radially from the mezzanine rim on the front inside annulus. The plurality of flanges extending from the outer rim on the rear outside annulus. The drone module is disposed facing the lip surface between the tabs and the mezzanine rim by first mechanical fasteners, and the flanges mount to the test stand by second mechanical fasteners, such as screws. The fixture can be a unitary construction and be composed of thermoset plastic.

A fixture is provided for securing an annular drone module to a test stand. The fixture includes a rear outside annulus, a front inside annulus, a plurality of tabs, and a plurality of flanges. The rear outside annulus extend radially to an outer rim and longitudinally from an aft surface and a lip surface. The front inside annulus extends radially to a mezzanine rim and longitudinally from the lip surface to a fore surface. The tabs extending radially from the mezzanine rim on the front inside annulus. The plurality of flanges extending from the outer rim on the rear outside annulus. The drone module is disposed facing the lip surface between the tabs and the mezzanine rim by first mechanical fasteners, and the flanges mount to the test stand by second mechanical fasteners, such as screws. The fixture can be a unitary construction and be composed of thermoset plastic.

The purpose of the present invention is to provide a torque command generation device for generating a motor-generated-torque command that makes it possible to maximize excitation force while ensuring necessary acceleration, and the like, within a limited motor torque range. A torque command generation device (6) is provided with: a maximum torque calculation unit (633) for calculating, according to a motor speed, a maximum torque value for a motor-generated-torque-command signal value; a DC component limiter (635) for calculating a DC signal value; a surplus amplitude calculation unit (637) for calculating a surplus amplitude by subtracting the maximum torque value from the sum of the DC component value calculated by the DC component limiter (635) and an externally input excitation amplitude; a sine-wave transmitter (639) for generating a sine wave having an amplitude obtained by subtracting the surplus amplitude from a base amplitude; and a summing unit (640) for calculating the motor-generated-torque-command signal value by adding the DC component value and the sine wave value.

This invention provides impact detection and vehicle cooperation to achieve particular goals and determine particular threat levels. For example, an impact/penetration sensing device may be provided on a soldier's clothing such that when this clothing is impacted/penetrated (e.g., penetrated to a particular extent) a medical unit (e.g., a doctor or medical chopper) may be autonomously, and immediately, provided with the soldiers location (e.g., via a GPS device on the soldier) and status (e.g., right lung may be punctured by small-arms fire).

This invention provides impact detection and vehicle cooperation to achieve particular goals and determine particular threat levels. For example, an impact/penetration sensing device may be provided on a soldier's clothing such that when this clothing is impacted/penetrated (e.g., penetrated to a particular extent) a medical unit (e.g., a doctor or medical chopper) may be autonomously, and immediately, provided with the soldiers location (e.g., via a GPS device on the soldier) and status (e.g., right lung may be punctured by small-arms fire).

A test apparatus is provided for testing a sensorless check device of an actuator. The sensorless check device is arranged to be used by mechanically moving a check device pin from a resting position to an actuation position and then releasing the check device pin to allow it to return to a resting position urged by an elastic return mechanism. The test apparatus comprises: a piston for contact with an actuator surface associated with the check device pin; a piston spring for urging the piston toward the actuator surface, wherein the piston spring is softer than the elastic return mechanism of the check device; and an adjustment and testing mechanism.

A test apparatus is provided for testing a sensorless check device of an actuator. The sensorless check device is arranged to be used by mechanically moving a check device pin from a resting position to an actuation position and then releasing the check device pin to allow it to return to a resting position urged by an elastic return mechanism. The test apparatus comprises: a piston for contact with an actuator surface associated with the check device pin; a piston spring for urging the piston toward the actuator surface, wherein the piston spring is softer than the elastic return mechanism of the check device; and an adjustment and testing mechanism.