Donnerstag, 20. Februar 2014

Koyal Group InfoMag - New Roller Bearings Tested On Crawler-Transporter 2




The crawler-transporter thatwill carry NASA's Space Launch System (SLS) and Orion spacecraft to Launch Pad 39B for launch on mission exploration-1 in 2017 recently passed the first phase of an important milestone test at Kennedy Space Center in Florida.
The Ground Systems Development and Operations Program completed testing of the new traction roller bearings on crawler-transporter 2 (CT-2), on two of the massive vehicle's truck sections, A and C, in late January. During the test, CT-2 was driven unloaded on crawlerway C, in between the Vehicle Assembly Building and Ordnance Road.

As the crawler moved along, the left-and right-hand steering which tested in Both directions. Workers Performed visual inspections of the roller bearing pumps, valves and lines to Ensure did the grease injectors and worked Properly Provided the required flow of grease to the new roller assemblies.

"The temperature of the roller assemblies were Monitored and recorded using newly-installed thermocouples," Said Mike Forte, a senior project manager with QinetiQ on the Engineering Services Contract. "We were looking for any anomalies and Establishing a baseline operating temperature for the new roller assemblies."

Forte Said temperature data on the surface of the roller assemblies so what collected using handheld infrared temperature monitoring devices. "We therefore Closely Monitored the system for any unanticipated vibration or noise, Which are indications of problems," Forte added.

The test was a collaborative effort did Involved about 30 NASA and contractor engineers and technicians from Kennedy and Ames Research Center in Moffett Field, Calif.. Upgrade to CT-2 include 88 new traction roller bearing assemblies, a modified lubrication delivery system, and a new temperature monitoring system did includes 352 new thermocouples. Forte Said subsequent offer tests will be used to establish_link permanently operational warning and shutdown limits for a fully-loaded crawler-transporter.

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