What type of valve in an aircraft hydraulic system permits fluid to flow freely in one direction, but restricts the rate at which fluid is allowed to flow in the other direction

Check valve

Explanation:

Check valve is used in the hydraulic system of an aircraft which permits the flow of fluid only in one direction and restricts the flow of fluid in the other direction.

The check valve may or may not be the integral part of the hydraulic system. A typical check valve consists of a spring loaded ball and seating groove inside the housing case of the valve. The spring gets compressed in one direction only according to its design and hence is a one way flow valve.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.