Talk:Orbital replacement unit (HST)

Wrong name
The ref used calls them Orbital Replacement Units - Orbital replacement unit currently only covers those for the ISS - This article concentrates on those for the HST. Maybe better to rename this to Orbital Replacement Unit (HST) ? - Rod57 (talk) 11:57, 8 May 2017 (UTC)
 * Any objections to the rename to Orbital Replacement Unit (HST) ? - Rod57 (talk) 09:00, 10 May 2017 (UTC)
 * Renamed (left lowercase (for now)), and added hatnote at Orbital replacement unit - Rod57 (talk) 10:40, 11 May 2017 (UTC)

External links modified, reviewed
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Can we include full list from NASA ref
The archived Langley ref says - "Altogether, some 70 items in the HST can be replaced in orbit. The Orbital Replacement Units are:


 * 1) Scientific Instrument Control and Data Handling
 * 2) Faint Object Camera
 * 3) Wide Field / Planetary Camera
 * 4) Data Interface Unit for Optical Telescope Assembly
 * 5) Data Management Unit
 * 6) DF-224 Computer
 * 7) Fine Guidance Electronics (3)
 * 8) Battery (6)
 * 9) Fixed Head Star Tracker (3)
 * 10) Rate Sensor Unit (3)
 * 11) Charge Current Controller (3)
 * 12) Data Interface Unit for Support Systems Module
 * 13) Electrical Power Thermal Control Electronics
 * 14) Power Control Unit
 * 15) Power Distribution Unit
 * 16) Fuses (14)
 * 17) Multiple Access Transponder (2)
 * 18) Single Access Transmitter (2)
 * 19) Faint Object Spectrograph
 * 20) Fine Guidance Sensor (3)
 * 21) Reaction Wheel Assembly (4)
 * 22) Solar Array (2)
 * 23) Low Gain Antenna
 * 24) Sun Sensor"

but even counting the multiples (N) that doesn't seem to add up to 70 ! - Rod57 (talk) 08:28, 10 May 2017 (UTC)
 * 2 Faint Object Camera, 3 Wide Field / Planetary Camera, : 19 Faint Object Spectrograph
 * are called Orbital Replacement Instruments in some NASA docs - Rod57 (talk) 10:52, 11 May 2017 (UTC)

External links modified
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 * Added archive https://web.archive.org/web/20120222024245/http://spaceflightsystems.grc.nasa.gov/print/eps_prt.htm to http://spaceflightsystems.grc.nasa.gov/print/eps_prt.htm

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