- Cupola (ISS module)
The Cupola is an ESA-built observatory module of the International Space Station (ISS). Its seven windows are used to conduct experiments, dockings and observations of Earth. It was launched aboard Space Shuttle mission STS-130 on 8 February 2010 and attached to the Tranquility (Node 3) module. With the Cupola attached, ISS assembly reached 85 percent completeness. The Cupola is the largest window ever used in space.
The Cupola provides an observation and work area for the ISS crew giving visibility to support the control of the space station remote manipulator system and general external viewing of Earth, celestial objects and visiting vehicles. Its name derives from Italian word cupola, which means "dome". The Cupola project was started by NASA and Boeing, but canceled due to budget cuts. A barter agreement between NASA and the ESA resulted in the Cupola's development being resumed in 1998 by the ESA. It is extremely important to the ISS astronauts, as previously they have been confined to looking out of small portholes or at best the 20-inch (50 cm) window in the US Destiny laboratory. The Cupola is berthed onto the down-facing port of Node 3—the final of three modules, including Node 1 and Node 2.
Design and construction
The International Space Station Cupola was first conceived in 1987 by Space Station Man-Systems Architectural Control Manager Gary Kitmacher as a workstation for operating the station’s robotic arm, maneuvering vehicles outside of the station, and observing and supporting spacewalks. He likened the use as similar to that of the Shuttle Orbiter Aft Flight Deck. There were to have been 2 Cupolas, one on either end of the racetrack shape formed by the station modules and nodes. It was initially named the “windowed workstation”, to discriminate it from other computer-based workstations inside of the station and from which the crew could operate the station’s systems. Once the idea was initially accepted, a number of people went to work. Human factors specialist Frances Mount began to develop the rationale and operational scenarios for the Cupola, and got considerable support from Chief Astronaut John Young and Shuttle Commander Gordon Fullerton. Charles Wheelwright, who had defined the specifications for every window on every prior US manned spacecraft, began to define the design specs of the Cupola windows. Laurie Weaver, who had just started with NASA as a co-op, began to work on a series of different configurations for the Cupola. She started with Kitmacher’s idea based on the Shuttle Aft Flight Deck, in this case two Aft Flight Decks mounted back to back, placed atop a short cylinder. An inexpensive mock-up made of PVC tubes was built and tested underwater where critical dimensions could be measured to ensure that two crew members in zero-g would have adequate access. Then she built a series of small cardboard models, looking at a variety of different alternative shapes. The different configurations and their positive and negative attributes were presented at a series of Crew Station Reviews over the next year in which participants rated each. The Cupola that evolved was octagonal in shape, with eight similar windows around the periphery, four quadrant windows overhead, and mounted on a cylinder. The module was designed to fully contain at least two crewmembers ‘floating’ side by side in zero-g neutral body posture. About this time, Kitmacher and Designer Jay Cory applied the term Cupola for the first time. Kitmacher wrote the requirements and the name into the Man-Systems Architectural Control Document and into the RFPs for Work Package 1 at MSFC and Work Package 2 at JSC. Later Kitmacher went on to lead the Man-Systems group leading the first lunar outpost and moonbase studies and the Cupola reappeared on several of his rover and module designs .
Because of confusion between the responsibilities of the two contracts, both Boeing, which won Work Package 1, and McDonnell-Douglas, which won Work Package 2, bid to build the Cupola. The McDonnell-Douglas design was basically the same as NASA’s but Boeing’s was smaller; a hexagon, with a single large circular overhead window, and a much shorter cylinder; this design had been considered but previously discarded because it was unable to accommodate two crew members completely and would instead require the crew to dangle their legs and bodies in the Node to which the Cupola would be attached. This design was the one ultimately built. Components of the Cupola were initially fabricated in California, and the windows in New York in the late 1980s. But as budgets were cut, the Cupola was a favorite target. Several times it was fought back into the program only to be cut again as not technically required. More than once the responsibilities for fabrication were bartered to one international partner and then another in exchange for Shuttle launch services and resources that the US would provide on-board the station in orbit. The Cupola made the rounds to Brazil and then finally wound up with ESA and the Italians in 1998, who did complete it back in 2003. Even then the launch of the Cupola was repeatedly delayed until it finally made it into orbit in February, 2010. The delivery method also changed from Cupola being mounted on a Spacelab pallet accompanying Kibo's external facility to being mounted on the same European pallet but with Node 3 to being mounted on Node 3 itself.
With final design and assembly by the Italian contractor Alenia Spazio (now Thales Alenia Space), it is approximately 2 metres in diameter and 1.5 metres tall. It has six side windows and a top window, all of which are equipped with shutters to protect them from damage by micrometeorites and orbital debris. It features a thermal control system, audio, video and MIL-STD-1553 bus interfaces, as well as the connections needed for installing one of the two identical robotic workstations that control the Canadarm2 into it.
The Cupola was launched aboard the Space Shuttle on mission STS-130, on February 8, 2010. It was berthed to the forward port of the Tranquility module for launch, and was later transferred to the nadir-facing port of Tranquility by the Canadarm2, once Tranquility had been berthed to the Unity Module of the ISS. The installation of the Cupola, along with Tranquility, marks one of the last main components to be added to the International Space Station.
- Overall Height: 1.5-metre (4.9 ft)
- Maximum Diameter: 2.95-metre (9.68 ft)
- Launch Mass: 1,805-kilogram (3,979 lb)
- On Orbit Mass: 1,880-kilogram (4,145 lb)
- Dome: Forged Al 2219-T851
- Skirt: Al 2219-T851
- Windows: Fused Silica and Borosilicate Glass
- MDPS Shutters: Kevlar/Nextel sheets
- Electrical Power: Node 120 V Interface
- Top Window: 80-centimetre (31 in) Diameter
- Thermal Control: Goldised Kapton Multi-Layer Insulation Blanket
- ESA Cupola specifications
- ESA Report about the Cupola
- ESA: Largest window for Space completed
- Thales Alenia Space page for Cupola
- Video Tour
Components of the International Space Station Overview Major components
in orbitZarya (Functional Cargo Block) · Zvezda (Service Module) · Unity (Node 1) · Harmony (Node 2) · Tranquility (Node 3) · Destiny (Laboratory) · Columbus (Laboratory) · Kibō (PM, ELM-PS, EF) · Quest (Airlock) · Pirs (Airlock / Docking Module) · Rassvet (MRM 1) · Poisk (MRM 2) · Leonardo (PMM) · Cupola · Integrated Truss Structure (ITS)
with no launch plan
Scheduled for launch
Proposed module Cancelled Support vehicles Mission control centers ← 2009 · Orbital launches in 2010 · 2011 →Compass-G1 | Globus-1M No.12L | Progress M-04M | STS-130 (Tranquility · Cupola) | SDO | Intelsat 16 | Kosmos 2459 · Kosmos 2460 · Kosmos 2461 | GOES 15 | Yaogan 9A · Yaogan 9B · Yaogan 9C | EchoStar XIV | Soyuz TMA-18 | STS-131 (Leonardo MPLM) | CryoSat-2 | GSAT-4 | Kosmos 2462 | USA-212 | SES-1 | Kosmos 2463 | Progress M-05M | STS-132 (Rassvet · ICC-VLD) | Akatsuki · IKAROS (DCAM-1 · DCAM-2) · Shin'en · Waseda-SAT2 · Hayato · Negai ☆'' | Astra 3B · COMSATBw-2 | USA-213 | SERVIS-2 | Compass-G3 | Badr-5 | Dragon Spacecraft Qualification Unit | STSAT-2B | Shijian XII | Prisma · Picard · BPA-1 | Soyuz TMA-19 | TanDEM-X | Ofek-9 | Arabsat-5A · Chollian | Progress M-06M | EchoStar XV | Cartosat-2B · AlSat-2A · StudSat · AISSat-1 · TIsat-1 | Compass-IGSO1 | Nilesat 201 · RASCOM-QAF 1R | Yaogan 10 | USA-214 | Tian Hui 1 | Kosmos 2464 · Kosmos 2465 · Kosmos 2466 | Chinasat-6A | Gonets-M No.2 · Kosmos 2467 · Kosmos 2468 | Progress M-07M | Michibiki | USA-215 | Yaogan 11 · Zheda Pixing 1B · Zheda Pixing 1C | USA-216 | Kosmos 2469 | Chang'e-2 | Shijian 6G · Shijian 6H | Soyuz TMA-01M | XM-5 | Globalstar 73 · Globalstar 74 · Globalstar 75 · Globalstar 76 · Globalstar 77 · Globalstar 79 | Progress M-08M | Eutelsat W3B · BSat 3B | Compass-G4 | Meridian 3 | Feng Yun 3B | COSMO-4 | SkyTerra-1 | STPSat-2 · RAX · O/OREOS · FASTSAT (NanoSail-D2) · FalconSat-5 · Sara-Lily · Emma | USA-223 | Chinasat-20A | Intelsat 17 · Hylas 1 | Glonass-M No.39 · Glonass-M No.40 · Glonass-M No.41 | Dragon C1 · Mayflower · SMDC-ONE 1 · QbX-1 · QbX-2 · Perseus 000 · Perseus 001 · Perseus 002 · Perseus 003 | Soyuz TMA-20 | Compass-IGSO2 | GSAT-5P | KA-SATPayloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).
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