NASA Photo ID: S90-30521           File Name: 10063534.jpg
  Film Type: 35mm                    Date Taken: 03/05/90
  Title: STS-31 MS Sullivan exits airlock mockup during JSC WETF underwater simulation
  Description:
  STS-31 Mission Specialist (MS) Kathryn D. Sullivan, fully suited in an 
  extravehicular mobility unit (EMU) and holding a semirigid tether (SRT) and 
  ratchet caddy assembly, egresses the airlock (AL) mockup during an
  underwater  simulation in JSC's Weightless Environment Training Facility
  (WETF) Bldg 29  pool. The open AL extravehicular (EV) hatch appears in the
  foreground as  Sullivan backs out into the payload bay (PLB).  Though no
  extravehicular  activity (EVA) is planned for STS-31, two crewmembers train
  for contingencies  that would necessitate leaving the shirt sleeve
  environment of Discovery's,  Orbiter Vehicle (OV) 103's, cabin and
  performing chores with their Hubble  Space Telescope (HST) payload or
  related hardware in the PLB.             
  Subject terms:
  AIR LOCKS                               
  ASTRONAUT TRAINING                      
  ASTRONAUTS                              
  BRACKETS                                
  CREWS                                   
  EXTRAVEHICULAR MOBILITY UNITS           
  HATCHES                                 
  HELMETS                                 
  MOCK-UP                                 
  NEUTRAL BUOYANCY SIMULATION             
  SPACE FLIGHT TRAINING                   
  SPACE TOOLS                             
  STS-31                                  
  TETHERING                               
  TETHERLINES                             
  WEIGHTLESS ENVIRONMENT TRAINING         
  

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