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                                                                       The
                                                                      Space
                                                                      Power
                                                                      Facility 
                                                                      When
                                                                      it was
                                                                      constructed
                                                                      in 1969,
                                                                      the Space
                                                                      Power
                                                                      Facility
                                                                      (SPF) was
                                                                      the
                                                                      world's
                                                                      largest
                                                                      vacuum
                                                                      chamber.
                                                                      It stands
                                                                      more than
                                                                      122 feet
                                                                      high, 100
                                                                      feet in
                                                                      diameter
                                                                      and
                                                                      provides a
                                                                      vacuum
                                                                      environment
                                                                      for the
                                                                      study of
                                                                      space
                                                                      propulsion.
                                                                      Originally
                                                                      commissioned
                                                                      for
                                                                      nuclear-electric
                                                                      propulsion
                                                                      studies,
                                                                      the SPF
                                                                      has been
                                                                      re-commissioned
                                                                      for
                                                                      current
                                                                      and future
                                                                      use in the
                                                                      ongoing
                                                                      research
                                                                      and
                                                                      development
                                                                      of space
                                                                      propulsion
                                                                      systems.
                                                                      The SPF is
                                                                      located at
                                                                      Plum Brook
                                                                      Station,
                                                                      part of
                                                                      the John
                                                                      H. Glenn
                                                                      Research
                                                                      Center at
                                                                      Lewis
                                                                      Field,
                                                                      Cleveland,
                                                                      Ohio.  | 
																	
                                                                       
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