NASA Readies Space Station Trusses for Next Shuttle Launch
By Chris Kridler
FLORIDA TODAY
posted: 21 July 2006
4:51 p.m. ET

http://www.space.com/missionlaunches/ft_060721_sts115_trusses.html

CAPE CANAVERAL – In a big room at Kennedy Space Center, cylindrical labs 
and plastic-draped trusses surround a 17-ton space girder whose time to 
fly has come.

It's not particularly pretty, with its hexagonal frame, bouquets of 
wires and squat batteries, but this two-truss combo is the first big 
piece of the International Space Station to be brought there in nearly 
four years.

This morning, a super-crane lifted the linked P3/P4 truss segments -- 
designated "P" for their port or left-side location -- and placed them 
in their canister.

"I always love to see that," said Boeing site manager Chuck Hardison of 
Merritt Island, who has waited a long time to see it go. "It's like a 
ship going down the channel. It's so big, and it moves so gracefully."

In turn, the cargo will head to the pad for a launch aboard Atlantis 
targeted for Aug. 28. The orbiter is set to roll to the Vehicle Assembly 
Building at Kennedy Space Center on Monday and to the launch pad July 31.

"The shuttle is flying again, and we're excited and anxiously awaiting 
our turn at the end of August," said Robbie Ashley, NASA's manager for 
the cargo.

The last true station construction mission was in late 2002, before the 
2003 Columbia accident grounded the shuttles and prompted a round of 
design changes.

In the interim, astronauts have taken several spacewalks, making repairs 
and performing other tasks on the station, but no large equipment has 
been installed.

The truss will add another set of solar panel wings. Tests gave managers 
confidence that, after issues with sticky panels in the past, these will 
unfold despite their long storage.

The batteries have been replaced because NASA feared they wouldn't be 
able to store and distribute power as expected.

"They were never intended to be on the ground this long," Hardison said.

Perhaps one of the most impressive parts of the linked segments is the 
10-foot-wide Solar Alpha Rotary Joint in the middle, which keeps the 
solar panels aimed at the sun.

"The entire space station outboard of that joint will be rotating 360 
degrees every orbit," Hardison said. "It'll be quite something to see, 
that's for sure."

He said his team was eager to get the hardware into orbit as they waited 
for the shuttle schedule to pick up again. Among the many parts awaiting 
flight are the Japanese Experiment Module, Europe's Columbus Laboratory 
and a starboard truss that will mirror the port pieces about to fly.

"We worked on it for so long," Hardison said.



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