Discovery Wraps up Second Tanking Test

May 20, 2005
Discovery Wraps up Second Tanking Test

Technicians at NASA's Kennedy Space Center conducted a new tanking test on Friday, May 20, at Launch Pad 39-B to continue troubleshooting two issues that arose during the tanking test on April 14.

Image: A close up of Discovery and its External Tank at Launch Pad 39-B during the tanking test. Image credit: NASA TV/KSC.

Engineers wanted to evaluate liquid hydrogen sensors in the tank that gave intermittent readings during last month's test. These sensors serve as fuel gauges to notify the Space Shuttle Main Engines to shut down when propellants reach a certain level in the tank. This is critical in the safe operation of the main engines.

They also wanted a second look at a liquid hydrogen pressurization relief valve that cycled more times during the first tanking test than is standard. This valve opens and closes to ensure the liquid hydrogen stays at the correct temperature.

Technicians are preparing to roll Discovery to the Vehicle Assembly Building (VAB) on May 24. Discovery will be detached from its ET and lowered into the transfer aisle. On or about June 7, Discovery will be lifted and attached to its new ET and Solid Rocket Boosters. It will roll back out to the launch pad in mid-June.

Source: NASA

Explore further: SpaceX picks up launch pace, sets April 27 commercial launch and May 5 Dragon pad abort test

Related Stories

Interview with veteran NASA astronaut Brian Duffy

Apr 07, 2015

Space is always on the mind of a veteran NASA astronaut Brian Duffy. The key figure in an aerospace company Orbital ATK and a Space Shuttle commander is extremely keen on flying to space again. The enthusiasm ...

OSIRIS-REx mission passes critical milestone

Apr 02, 2015

NASA's groundbreaking science mission to retrieve a sample from an ancient space rock has moved closer to fruition. The Origins Spectral Interpretation Resource Identification Security Regolith Explorer (OSIRIS-REx) ...

Discovery Set for Tanking Test on Friday

May 19, 2005

On Friday, technicians at NASA's Kennedy Space Center will conduct a new tanking test at Launch Pad 39 to continue troubleshooting two issues that arose during the tanking test on April 14.

Second Discovery tanking test

May 08, 2005

Following Space Shuttle Program management discussions this week, a plan was laid out today reflecting how the program will move toward the STS-114 Return to Flight launch. Preparations are under way for a tanking test no ...

Recommended for you

Zapping away space junk

1 hour ago

Planet Earth is surrounded. Thousands of tons of dangerous space debris circle in low orbit, threatening serious damage, even death, if any were to strike the International Space Station. A proposal by a ...

Ariane 5's first launch of 2015

3 hours ago

An Ariane 5 has lifted off from Europe's Spaceport in Kourou, French Guiana and delivered two telecom satellites into their planned orbits.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.