50 



Appendix I 



A^g PedermJ L-Abormtorie* Need Hepalrs 



and Upgrades 



Carc3board covering Broken window to keep drafts and dust oul of a greenhouse laboratory 



Lewis Research Center 



NASA's Lewis Research Center, in Cleveland, Ohio, has several msyor wind 

 tunnels and other facilities built during the 1940s and 1950s for aircraft 

 engine combustion testing. These facilities rely on large compressors and 

 vacuum pumps (exhausters) in the Lewis Center's central air facility to 

 pull air at high speeds through the test facilities. Because this equipment 

 was installed more than 40 years ago, it has exceeded its expected life. 



