The Southwest Research Institute (SwRI) experiment was carried out on board the Blue Origin New Shepard ballistic rocket launched from Van Horn, Texas. Five variations of the Tapered Liquid Acquisition Device (LAD), designed to safely supply liquid propellant from the fuel tank to the rocket engine, have been installed on the rocket to assess its performance in microgravity.
Taper LAD was first developed in the late 1990s and early 2000s as part of a collaboration between SwRI and NASA to develop cryogenic fluid management capabilities during long space flights. Today, most rocket engines use cryogenic liquid propellants as fuel. For long space flights, store large amounts of fuel at low temperatures before Rocket engineHowever, current LADs have linear channels that are vulnerable to internal vapor bubbles.
Kevin Supak, SwRI’s Program Manager and Project Principal Research Institute, said: “Tapered LADs are being developed to supply vapor-free liquids to fuel tanks or engines.”
Supak worked with SwRI engineers Dr. Amy McCleney and Steve Green to design the LAD taper channel. It passively removes air bubbles by surface tension. SwRI has tested LAD on a Blue Origin New Shepard rocket for the third time today, taking off and landing vertically. 10 minutes Flight Is ideal for experimentation and provides high quality microgravity for about 3 minutes, which is significantly longer than the 25 second microgravity achieved in parabolic flight.
In today’s experiments, Supak, McCleney, and Green tested five different versions of LAD, where angular or surface properties passively bubble bubbles in microgravity without costly thrust manipulation or active separation systems. We tested whether it affected the ability of the device to be removed. Place the camera in the payload and vapor Bubbles in 5 LADs.
“We are testing the limits of LAD, specifically how narrowing the angle affects the ability to generate proper bubble movement,” Supak said. I am. “The narrower it is, the less propulsion the bubble will experience to drive it out of the channel. In this experiment, the bubble will move more slowly compared to previous flights, but to validate the model. Generate important data. “
The team also installed a rougher material on one side of the LAD, similar to the interior of the current non-tapered LAD, to test whether a rougher surface would affect the reliability of the LAD.
“This is the third experiment in New Shepard,” McCleney said. “We are approaching what we believe in the actual internal tapering LAD. rocket It looks like. “
New Shepard was launched from Blue Origin’s Launch Site 1 near Van Horn, Texas, and was equipped with LAD test equipment on August 26. SwRI researchers oversaw the preparation of the experiment and witnessed the launch. The current flight test project is funded by NASA’s Space Technology Mission Department through an Aircraft Association program managed by the NASA Armstrong Flight Research Center in California.
For more information, please visit: https://www.swri.org/industries/fluids-engineering..
Quote: The engineer is Blue Origin’s New Shepard Rocket (8 2021) acquired from https://phys.org/news/2021-08-liquid-acquisition-device-aboard-blue.html on August 26, 2021. Test the liquid acquisition device on board (March 26)
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Engineers test liquid acquisition equipment on board Blue Origin’s New Shepard rocket
Source link Engineers test liquid acquisition equipment on board Blue Origin’s New Shepard rocket