Testing Of Discovery's Systems Continues | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date






Airborne On ANN

Airborne 11.23.15

Airborne 11.24.15

Airborne 11.18.15

Airborne 11.19.15

Airborne 11.20.15

Airborne Hi-Def On YouTube

Airborne 11.23.15

Airborne 11.24.15

Airborne 11.18.15

Airborne 11.19.15

Airborne 11.20.15

EAA/ANN AirVenture Innovation Preview

AIP-#1 Vimeo

AIP-#2 Vimeo

AIP-Part 1 YouTube

AIP-Part 2 YouTube

Thu, Mar 18, 2010

Testing Of Discovery's Systems Continues

Results Positive On Helium Iso Valve Test

On Launch Pad 39A at NASA's Kennedy Space Center in Florida, technicians completed a test Wednesday to pressurize space shuttle Discovery's Right Reaction Control System's helium tank to verify the overall health of the regulators downstream of the helium isolation valves. Preliminary data shows positive results for the test. Crews then began preparing Discovery for further testing on the system.

The testing was initiated because of an issue that occurred over the weekend while Discovery's aft fuel propellant tanks were being vented in preparation for fuel loading. The Right Reaction Control System, or RRCS, fuel helium tank pressure unexpectedly decreased in unison with the RRCS fuel propellant tank when the fuel tank was vented. This indicates that at least one of the two parallel helium isolation valves is leaking or is remaining in the open position when it is expected to be closed.

The two helium system regulators, a primary and a secondary, will be tested to verify they are functioning correctly. The regulators are "downstream" of the isolation valves, and help to maintain helium pressure to the fuel tank. Knowing whether the regulators are operating correctly is a key factor for managers who must decide whether to launch with the errant condition of the isolation valves. The test is expected to occur late this week once a ground support equipment test panel has been calibrated. The helium system will be brought to flight pressure and engineers monitoring the panel will ascertain whether the regulators function properly.

Also this week, managers are targeting Friday to move Discovery's payload to Launch Pad 39A, starting at 0001 EDT.

There still are a few days of contingency left in the schedule to make the targeted launch date of April 5.

FMI: www.nasa.gov


More News

Blue Origin Makes History, But Is The System Practical

Only Time Will Tell If The Booster Is Truly Reusable On November 23, 2015 Blue Origin achieved a first in rocketry and spaceflight history when their New Shepard launch vehicle suc>[...]

Dassault Falcon Jet Completes New Little Rock Expansion

Facility Earmarked For Work On Falcon 8X And Falcon 5X Airplanes Dassault Falcon Jet has completed another major expansion of its Little Rock Completion Center that will add 350,00>[...]

ICAO World Aviation Forum Charts Course To Sustainable Aviation Benefits

First-Ever Forum Of Its Type Draws Over 800 International Officials Over 800 Ministers and senior officials from States, UN and international organizations have gathered at the Hea>[...]

Russian Warplane Shot Down By Turkey On Syrian Border

Kremlin Say There Was No Violation Of Turkish Airspace Tensions between Russia and Turkey, and by extension NATO, escalated Tuesday when a Russian Su-24 was shot down by Turkey aft>[...]

AD: Airbus Airplanes

AD NUMBER: 2015-23-06 PRODUCT: Certain Airbus Model A330-200, A330-300, and A340-300 series airplanes.>[...]

blog comments powered by Disqus





© 2007 - 2015 Web Development & Design by Pauli Systems, LC