Slice of History: Transition Pipe
Each month in “Slice of History” we’ll be featuring a historical photo from the JPL Archives. See more historical photos and explore the JPL Archives at https://beacon.jpl.nasa.gov/.
This test setup was part of an investigation in 1954 of the stability of laminar pipe flow with respect to disturbances of different frequencies and amplitudes. A disturbance generator was developed using vibrating aluminum reeds and instruments measured how a small amplitude disturbance in the air flow changed as it propagated down the 115–foot length of a 2” aluminum pipe. It appears to be located in the concrete channel that was used in the 1940s as a hydrodynamic tank with a rocket-propelled towing car (the “Hydrobomb”). At the end of the room you can see metal rungs that were used to climb down into the channel when the water was drained.
Tags: engineering, historical photos, images from JPL history, jpl, JPL history, Julie Cooper, nasa, nasajpl, science, science blogs, slice of history, space instruments, space science, transition pipe