Editing Juno I (section)

{{Short description|Four-stage American expendable launch vehicle (1958–59)}}
{{More citations needed|date=July 2021}}
{{Use American English|date=November 2021}}
{{Use mdy dates|date=November 2021}}
{{Infobox rocket
| name           = Juno I
| image          = Juno I awaiting launch with Explorer I.jpg
| caption        = Juno I awaiting launch with Explorer I
| upright        = 
| function       = Orbital [[launch vehicle]]
| manufacturer   = [[Chrysler]] for the [[Army Ballistic Missile Agency|ABMA]]
| country-origin = United States
| height         = {{cvt|21.2|m}}
| diameter       = {{cvt|1.78|m}}
| mass           = {{cvt|29060|kg}}
| stages         = 4
| capacities     = {{Infobox rocket/payload
  | location     = [[Low Earth orbit|LEO]]
  | kilos        = {{cvt|11|kg}}
  }}
| status     = Retired
| sites      = [[Cape Canaveral Launch Complex 5|LC-5]] and [[Cape Canaveral Launch Complex 26|26A]],<br/>[[Cape Canaveral Space Force Station|Cape Canaveral Missile Annex]], [[Florida]]
| launches   = 6
| success    = 3
| fail       = 3
| partial    = 
| first      = 1 February 1958,<br/>03:47:56 [[Greenwich Mean Time|GMT]]
| last       = October 23, 1959
| stagedata  =
 {{Infobox rocket/stage
  | type     = stage
  | stageno  = First
  | name     = [[PGM-11 Redstone|Redstone]] (stretched)
  | engines  = 1 [[Rocketdyne]] A-7
  | thrust   = {{cvt|42439|kg-f|kN lb-f}}
  | solid    = no
  | SI       = {{cvt|235|isp}}
  | burntime = 155 seconds
  | fuel     = [[Hydyne]]/[[LOX]]
  }}
 {{Infobox rocket/stage
  | type     = stage
  | stageno  = Second
  | name     = [[MGM-29 Sergeant|Baby Sergeant]] cluster
  | engines  = 11 [[solid fuelled rocket|Solid]]<ref name="Boehm-NASA"/>
  | thrust   = {{cvt|7480|kg-f|kN lb-f}}
  | solid    = yes
  | SI       = {{cvt|220|isp}}
  | burntime = 6 seconds
  | fuel     = [[Polysulfide polymer|Polysulfide]]-[[aluminum]] and [[ammonium perchlorate]] ([[solid fuelled rocket|Solid]])
  }}
 {{Infobox rocket/stage
  | type     = stage
  | stageno  = Third
  | name     = [[MGM-29 Sergeant|Baby Sergeant]] cluster
  | engines  = 3 [[solid fuelled rocket|Solid]]
  | thrust   = {{cvt|2040|kg-f|kN lb-f}}
  | solid    = yes
  | SI       = {{cvt|236|isp}}
  | burntime = 6 seconds
  | fuel     = [[Polysulfide polymer|Polysulfide]]-[[aluminum]] and [[ammonium perchlorate]] ([[solid fuelled rocket|Solid]])
  }}
 {{Infobox rocket/stage
  | type     = stage
  | stageno  = Fourth
  | name     = [[MGM-29 Sergeant|Baby Sergeant]]
  | engines  = 1 [[solid fuelled rocket|Solid]]
  | thrust   = {{cvt|680|kg-f|kN lb-f}}
  | solid    = yes
  | SI       = {{cvt|249|isp}}
  | burntime = 6 seconds
  | fuel     = [[Polysulfide polymer|Polysulfide]]-[[aluminum]] and [[ammonium perchlorate]] ([[solid fuelled rocket|Solid]])
 }}
}}

The '''Juno I''' was a four-stage American [[space launch vehicle]], used to launch lightweight payloads into [[low Earth orbit]]. The launch vehicle was used between January 1958 to December 1959. The launch vehicle is a member of the [[Redstone (rocket family)|Redstone launch vehicle family]], and was derived from the [[Jupiter-C]] [[sounding rocket]]. It is commonly confused with the [[Juno II]] launch vehicle, which was derived from the [[PGM-19 Jupiter]] [[medium-range ballistic missile]]. In 1958, a Juno I launch vehicle was used to launch America's first satellite, [[Explorer 1]].