Orbital replacement units (or on-orbit replaceable unit ) ( ORUs ) are key elements of the International Space Station that can be readily replaced when the unit either passes its design life or fails. ORUs are parts of the main systems and subsystems of the external elements of the ISS, none are intended to be installed inside the pressurised modules. Examples of ORUs are: pumps, storage tanks, controller boxes, antennas, and battery units. Such units are replaced either by astronauts during EVA or by the Dextre (SPDM) robotic arm. All are stored on the three external stowage platforms (ESPs) or the four ExPRESS Logistics Carriers (ELCs) mounted on the Integrated Truss Structure (ITS).
31-765: ORU , Oru or Õru can refer to: Orbital replacement unit , used on the International Space Station Orbital replacement unit (HST) , used on the Hubble Space Telescope Oral Roberts University , a university in south Tulsa, Oklahoma Orange & Rockland Utilities, a subsidiary of Consolidated Edison in New York Otago Rugby Union Oru, polite Japanese verb- see keigo Observational Results (Unsolicited),
62-762: A CMG on ESP-3, swapping it for a failed unit on the ITS-Z1 truss. That failed unit was placed on ESP-2 FRAM-5 until it was returned by STS-122.[12] Two spares – ELC-3 FRAM-4 (top side), ELC-3 FRAM-7 (keel side) Three spares – ESP-1 FRAM-2, ESP-2 FRAM-2 (top side), ELC-2 FRAM-2 (top side) Two spares – ESP-3 FRAM-6 (keel side), ELC-1 FRAM-4 (top side) Two spares – ESP-2 FRAM-4 (top side), ESP-2 FRAM-6 (keel side). First spare launched with ESP-2 (FRAM-4) on STS-114 , July 2005. Second spare launched on STS-120 , October 2007, installed on ESP-2 FRAM-6. First spare swapped for failed 1A/1B MBSU by Expedition 32 crew in August 2012;
93-485: A computer controlled motor/cable deployment system. Part of the station's external active thermal control system (EATCS), the HRS radiator rejects thermal energy via radiation. The LDU provides drive and stopping forces for the mobile transporter along the integrated truss structure rail. Plasma Contactor Unit (PCU) is used to disperse the electrical charge that builds up by providing an electrically conductive "ground path" to
124-746: A deployment kit to allow UCP separation from the KYA. The UCP is deployed while the KYA remains in the Orbiter cargo bay. On-orbit, the UCP can be removed from the Orbiter payload bay, used as a payload / experiment platform, and returned to the payload bay on the same or a subsequent flight. Two ICC-GDs were launched and permanently attached to the ISS as External Stowage Platforms , ESP-2 (launched on STS-114 /LF1) and ESP-3 (launched on STS-118 /13A.1). Both ICC-GDs were deployed with Extra-vehicular activity (EVA) assistance via
155-518: A family of flight proven and certified cross-the-bay cargo carriers designed to fly inside the Space Shuttle cargo bay, installed either horizontally or vertically, and able to carry up to 8000 lbs. of unpressurized cargo into orbit. Airbus owns the ICC fleet of carriers. The ICC carriers flew on 12 Space Shuttle missions between 1999 and 2010 under NASA's Cargo Mission Contract contributing to
186-1272: A message type of the Health Level 7 standard. Funda Oru (born 1985), Belgian politician Juan Mendoza Airport , with IATA code ORU Places in Estonia [ edit ] Oru, Kohtla-Järve , an exclave district of Kohtla-Järve Oru, Lääne County , village in Lääne-Nigula Parish, Lääne County Oru, Lääne-Viru County , village in Viru-Nigula Parish, Lääne-Viru County Oru, Harju County , village in Kose Parish, Harju County Õru , small borough in Valga Parish, Valga County Oru Palace , former presidential residence in Toila, Ida-Viru County Oru Parish , former municipality in Lääne County Õru Parish , former municipality in Valga County Topics referred to by
217-513: Is different from Wikidata All article disambiguation pages All disambiguation pages Orbital replacement unit While spare parts/ORUs were routinely brought up and down during the ISS life-time via Space Shuttle resupply missions, there was a heavy emphasis once the Station was considered complete. Several Shuttle missions were dedicated to the delivery of ORUs using support carrier structures/pallets of which some remained in
248-564: Is the primary structural element of the ICC that provides structural support for payload items carried in the unpressurized volume of the Orbiter’s cargo bay. The ICC-G UCP's dimensions are approx. 14 feet (width) × 8.5 feet (length) × 10 inches (thick). Cargoes can be mounted on both faces of the UCP. The KYA is a U-shaped structure whose primary purpose is to transfer UCP loads to the Orbiter via longeron and keel trunnions. The KYA’s design allowed it to be installed under pressurized tunnel sections in
279-638: Is used in tight spaces. A Modified Truncated Cone (MTC) Target is used to visually line up Dexter's arm to grab a fixture. Any ORU with a grapple fixture can be moved by the Canadarm2 . Three spares – ESP-2 FRAM-7 (keel side) FHRC SN1003, ESP-3 FRAM-2 (top side) FHRC SN1004, ELC-4 FRAM-5 (keel side) FHRC SN0005 delivered by HTV-2. Four original spares. Two unused Pump Modules remain – ELC-1 FRAM-7 (keel side) PM SN0007, ESP-2 FRAM-1 (top side) PM SN0005. Two utilised – ELC-2 FRAM-6 (keel side) PM SN0004 (Installed on ESP-2 FRAM-1 during STS-121, then removed by
310-506: The Early External Active Thermal Control System (EEATCS). One EEATCS spare on ITS-P6 swapped out for a leaky unit on the 2B power channel during an Exp 35 EVA May 11, 2013. Other EEATCS spare developed electrical fault and was replaced by an additional spare launched on SpaceX CRS-14 . The TUS reel assembly (TUS-RA) is basically a large spool much like a garden hose reel that pays out cable when
341-934: The Exp 24 crew to replace the failed original PM SN0002 on the S1 truss. SN0002 was returned to earth by the STS-135 crew. SN0004 replaced by PM SN0006 and moved to MT POA by Exp 38 crew in Dec. 2013. Relocated to ESP-2 FRAM-1 by ISS-41 EVA-27 in Oct. 2014. Swapped positions with SN0005 by SPDM in Mar. 2015.); ESP-3 FRAM-3 (top side) PM SN0006 (Installed on ESP-3 FRAM-3 during STS-127, swapped with failed PM SN0004 from S1 truss by Exp 38 crew Dec. 2013). Two spares – ELC-1 FRAM-9 (keel side), ELC-3 FRAM-5 (keel side) Also note – other than these two spares, two other Shuttle missions brought up new ATAs and then returned
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#1732772102573372-497: The ICC-VLD is converted from the octagonal-shaped ICC-V design by removing the top section and converted from a non-deployable configuration to a deployable configuration by adding a grapple fixture and scuff plates. The ICC-VLD flew on STS-127 /2JA and STS-132 /ULF4. During both missions, the ICC-VLD was deployed from the orbiter's cargo bay and transferred to the ISS via the orbiter's robotic arm Canadarm and subsequent handover to
403-708: The ICC-VLDs were both berthed back into the orbiter and returned to earth. The ICC-VLD flew on the Shuttle missions STS-127 /2JA and STS-132 /ULF4. Cargo items were installed to the UCP either via the Passive FRAM ( Flight Releasable Attachment Mechanisms ) Adapter Plate (PFRAM) (for ORUs) or mounted directly to the UCP's node hole or peripheral hole pattern. The general ICC design also incorporates avionic systems allowing for on-board data acquisition/processing/WLAN via integrated computer as well as power distribution for
434-839: The ISS via EVAs. Also, three flights of the Integrated Cargo Carrier (ICC) which remained in the cargo bay on flights STS-102 , STS-105 and STS-121 ; one use of the ICC-Lite on STS-122 (a shortened version of the ICC); two uses of the ICC-Vertical Light Deployable on STS-127 as ICC-VLD and STS-132 as ICC-VLD2, which were deployed and retrieved during the mission; and five uses of the Lightweight MPESS Carrier (LMC) on STS-114 , STS-126 , STS-128 , STS-131 and STS-135 ,
465-691: The LMC was not designed to be deployed and remained in the shuttle payload bay throughout the flight. To date other than the Space Shuttle missions, only one other mode of transportation of ORUs was utilised by the station, the Japanese cargo vessel HTV-2 delivered an FHRC and CTC-4 via its Exposed Pallet (EP), and HTV-4 delivered a Main Bus Switching Unit (MBSU) and a Utility transfer assembly (UTA). Orbital replacement units are parts of
496-452: The MT moves away and rolls it back up as the MT returns to the center of the truss. This is the same TUS-RA retrieved during STS-121 . It was replaced and this failed unit was returned to earth and refurbished to later fly on ELC-2. The Heat Rejection Subsystem (HRS) consists of a base, eight panels, torque panel, torque arm, an interconnected fluid system, a scissors-type deployment mechanism and
527-535: The Orbiter payload bay, thereby allowing the ICC-G to be used in conjunction with a SPACEHAB pressurized module. The ICC-G flew on seven Space Shuttle missions: STS-96 /2A.1, STS-101 /2A.2a, STS-106 /2A.2b, STS-102 /5A.1, STS-105 /7A.1, STS-121 /ULF1.1 and STS-116 /12A.1. The ICC-GD is the deployable version of the ICC-G. It consists of a UCP and a KYA (same dimensions as for ICC-G), both outfitted with deployment hardware including grapple fixtures , scuff plates and
558-587: The Space Station's robotic arm Canadarm2 . While grappled to the Space Station's robotic arm, the ICC-VLD's cargo elements, called Orbital Replacement Units ORUs were transferred with Extra-vehicular activity (EVA) assistance to the respective locations on the ISS. The ICC-VLD provided heater power and electrical connections for the ORUs while inside the cargo bay or grappled by the robotic arm. Upon completion of ORU removal and replacement activities (R&R),
589-538: The cargo bay, some that were deployed and retrieved and other pallets that were designed to be removed from the payload bay by RMS and placed onto the station. Deployable pallet flights included STS-102 with External Stowage Platform ESP-1, STS-114 with ESP-2, STS-118 with ESP-2, STS-129 with ExPRESS Logistics Carrier ELC-1 and ELC-2, STS-133 with ELC-4 and STS-134 with ELC-3. Other modes of ORU delivery included: Payload bay sidewall mounted ORUs, such as BCDUs, were regularly carried and transported to
620-532: The construction, supply and maintenance of the International Space Station (ISS), transporting more than 50 unpressurized cargo elements (over 34,000 pounds) into orbit and providing for permanent attachment of two External Stowage Platforms (ESP-2 and ESP-3) to the ISS. Airbus' former Cape Canaveral integration facility, which was located at Astrotech's processing facility (formerly SPACEHAB Payload Processing Facility (SPPF)) provided for
651-442: The failed ATAs: STS-128 ATA SN0004 up/SN0002 down (P1 truss original ATA) and STS-131 SN0002 up/SN0003 down (S1 truss original ATA). Two spares – ELC-1 FRAM-6 (keel side) NTA SN0002 (refurbished) ELC-2 FRAM-9 (keel side) NTA SN0003 (refurbished) Also note – other than these two spares, two other Shuttle missions replaced NTAs. STS-122 delivered new NTA SN0004 and then returned the depleted P1 Truss NTA SN0003. STS-124 swapped
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#1732772102573682-622: The failed MBSU was initially stored on ESP-2 FRAM-4, then moved to ELC-2 FRAM-1 in January 2013. Third spare delivered by HTV-4 in August 2013, installed on ESP-2 FRAM-4. 2A/2B MBSU failed and was replaced by Dextre with third spare in May 2017. Failed 2A/2B unit was brought inside via JEM airlock in August 2017, repaired, returned to ESP-2 FRAM-4 in November 2017. 3A/3B MBSU failed in April 2019 and
713-745: The main systems and subsystems of the external elements of the ISS. Affecting the control of the cooling system, the movement and control of the solar arrays and SARJ as well as the flow of power throughout the station from solar arrays to the heat rejection system as part of the External Active Thermal Control System (EATCS). As well as storage tanks for oxygen as part of the station Environmental Control and Life Support System (ECLSS). ORUs can be hardware such as radiators, or simply batteries or communication antennas, essentially any element that can readily be removed and replaced when required. The replaceable modular nature of
744-715: The new NTA SN0005 from ESP-3 FRAM 2 with the depleted NTA SN0002 from the S1 Truss. The STS-126 crew returned this depleted NTA. One spare – ELC-3 FRAM-6 (keel side), one depleted tank ELC-2 FRAM-4 (top side) Note the depleted tank was swapped with the original HPGTA launched on ELC-2 at FRAM-4. Three units – CTC-3 formerly on ELC-2 FRAM-2 (top side), was later moved to ESP-2 FRAM-3 via SPDM. CTC-2 on ELC-4 FRAM-2 (keel side), CTC-5 on ELC-3 FRAM-1 (top side) Two spares – ESP-3 FRAM-1 (top side), ESP-2 FRAM-5 (keel side) Two spares – ELC-1 FRAM-5 (top side) CMG SN104, ELC-2 FRAM-5 (top side) CMG SN102 Note: STS-118 crew delivered
775-509: The orbiter's and/or ISSs robotic arm ( Canadarm and Canadarm2 , respectively). The ESP-2 and ESP-3 provides electrical power to the ORUs while attached to the ISS via the ICC-GDs Power Distribution Unit (PDU) and power cable/PCAS (Passive Common Attach System) interface. The ICC-GD flew on the Shuttle missions STS-114 /LF1 (ESP-2) and STS-118 /13A.1 (ESP-3). The ICC-L is the principal one half of an ICC-G, using
806-512: The physical integration of cargoes to the ICC and subsequent transport to Kennedy Space Center for orbiter installation. Due to its modular design and versatility, options to adapt the ICC design to new commercial orbital space transportation vehicles exist. Four types of ICC carriers have flown into orbit aboard the Space Shuttle: The ICC-G is a horizontal cross-bay carrier consisting primarily of two components: The UCP
837-508: The plasma environment surrounding the ISS. This prevents the electrical discharges and provides a means of controlling crew shock hazard during EVA. There are two PCUs located on the ISS Zenith 1 Truss, both of which are operated during EVA. Integrated Cargo Carrier Integrated Cargo Carrier ( ICC ) was a project, started in 1997 by the companies Spacehab and Airbus DS Space Systems (formerly Astrium North America), to develop
868-459: The removable core section from the not-flown ICC-V (Vertical) rotated into a horizontal orientation and combining it with the KYA. The ICC-L flew once on STS-122 /1E. The ICC-VLD is a derivative of the not-flown ICC-V. Due to the modular pallet design of the ICC-V which is composed of one central core section and two identical outer sections that bolt to the upper and lower edges of the core section,
899-442: The same term [REDACTED] This disambiguation page lists articles associated with the title Oru . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Oru&oldid=1245045136 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description
930-548: The station allows its life to be extended well beyond its initial design life, theoretically. ORUs to be handled by Dextre have attachments designed to be gripped with the ORU/Tool Changeout Mechanisms (OTCM) on the end of each arm. The H‐fixture is for massive objects and/or to stabilize Dextre , the most common is a Micro‐fixture (also known as a Micro‐square) and the Micro‐Conical Fitting
961-612: Was replaced in May by the repaired former 2A/2B MBSU, with the 3A/3B unit stored on ESP-2 FRAM-4. Former 1A/1B unit brought inside and repaired in August 2019, then swapped into ESP-2 FRAM-4 for the former 3A/3B unit, which was brought inside in September 2019 and returned to Earth on board SpaceX CRS-19 . Two spares – ESP-2 FRAM-8 (keel side) ELC-4 FRAM-4 (keel side) Utility Transfer Assembly (delivered by HTV-4 EP via SPDM Aug. 2013) Three original spares, now two available spares – ESP-1 FRAM-1 plus 2 on ITS-P6 that were initially used by