NASA Moving Toward Tuesday Launch Attempt For Shuttle Discovery

Jul 21, 2005
Space shuttle Discovery

With some work still to go, NASA is moving toward a new launch attempt for the Space Shuttle Discovery Tuesday, July 26, at 10:39 a.m. EDT. Engineers are wrapping up a troubleshooting plan to address a fuel sensor system issue that caused Space Shuttle managers to scrub the first launch attempt for the Return to Flight mission, STS-114.

At a meeting today of the Mission Management Team, Shuttle managers decided on a plan to complete outstanding work on the External Tank's liquid hydrogen low-level fuel sensor system circuit that runs from the External Tank into the Orbiter. The plan outlines a series of steps that could culminate in a launch next Tuesday. First, engineers will complete tests to look at electromagnetic interference as a factor in the sensor system circuit malfunction. Then, workers will swap circuits for two of the sensors to provide a means to isolate the problem to the wiring or the point sensor box, should the problem recur during the countdown. Next, engineers will shore up the electrical grounding to reduce further the chance of electromagnetic interference with the sensor system.

For a Tuesday launch, the official launch countdown for Discovery will begin Saturday. During the countdown, engineers will closely watch the behavior of the sensor system circuit as the tank is filled with super-cooled propellants.

Including the first launch attempt on Tuesday, there are at least four opportunities for Discovery to launch during the current launch window, which extends until July 31. NASA managers are also looking at the possibility of additional launch opportunities in the first week of August.

Source: NASA

Explore further: NASA's Curiosity Mars rover studies rock-layer contact zone

Related Stories

Lifelike bionic hand functions via 14 precision grips

Jun 16, 2015

The first UK user of a substantially lifelike hand is 29-year-old Nicky Ashwell, who was fitted with the prosthetic, called the bebionic. The event marks a step up in the development of smaller, versatile ...

Start-ups key as Taiwan seeks new tech identity

Jun 02, 2015

As the Computex trade show opens its doors Tuesday in Taiwan it is putting a new focus on start-ups to boost the island's tech credentials in the face of intense competition from rival China.

New urban landscape at Taiwan's Computex

Jun 02, 2015

An improved urban landscape with safer driving, quick payment systems and pollution alerts was laid out at Asia's biggest tech trade fair Tuesday.

Recommended for you

What is a terrestrial planet?

14 hours ago

In studying our solar system over the course of many centuries, astronomers learned a great deal about the types of planets that exist in our universe. This knowledge has since expanded thanks to the discovery ...

Working out in artificial gravity

15 hours ago

Astronauts on the International Space Station (ISS) have a number of exercise options, including a mechanical bicycle bolted to the floor, a weightlifting machine strapped to the wall, and a strap-down treadmill. ...

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.