STS-120 was a Space Shuttle mission to the International Space Station (ISS) that launched on October 23, 2007, from the Kennedy Space Center, Florida.[5] The mission is also referred to as ISS-10A by the ISS program. STS-120 delivered the Harmony module and reconfigured a portion of the station in preparation for future assembly missions.[2] STS-120 was flown by Space ShuttleDiscovery, and was the twenty-third Space Shuttle mission to the ISS. It was Discovery's 34th flight.
Two commanders: Melroy and Whitson place the STS-120 mission insignia on the wall of the newly installed Harmony module.
As commander of STS-120, Pamela Melroy became the second woman (after Eileen Collins) to command a Space Shuttle mission.[6] Additionally, the Expedition 16 crew that received STS-120 was commanded by Peggy Whitson, the first female ISS commander.[7][8] The flight of STS-120 thus became the first time two female mission commanders were in space at the same time.[9][10][11]
STS-120 delivered launch package 10A to the International Space Station (ISS).[12] It consisted of the U.S. Harmony module (also known as Node 2), with four DC-to-DC Converter Unit (DDCU) racks and three Zero-g Storage Racks (ZSR) installed; a Power and Data Grapple Fixture (PDGF) for the station's robot arm, and a Shuttle Power Distribution Unit (SPDU). Harmony was manufactured for NASA by Thales Alenia Space in Torino, Italy, as part of an agreement between NASA and the European Space Agency and was the first pressurized habitable module delivered to the station since the Pirs docking compartment was installed in August 2001.
Since STS-120 docked to the Pressurized Mating Adapter-2 (PMA-2) on the forward port of the Destiny module, installation of Harmony occurred in two stages: STS-120 installed Harmony to the port node of the Unity module. After Discovery undocked, the station's robotic arm detached PMA-2 from Destiny, and moved it to the forward port of Harmony. Following the relocation of PMA-2, the robotic arm was used to move Harmony from its initial position to its final position, on the forward port of Destiny.[13]
The final positioning of Harmony allowed for the later installation of the EuropeanColumbus and JapaneseKibō research modules, which were attached to the side ports of Harmony.
P6 relocation
During STS-120, the P6 solar arrays were moved from the Z1 truss on top of Unity, to their final position at the port end of the truss.
Outreach
STS-120 carried the signatures of over 500,000 students that participated in the 2007 Student Signatures in Space program, jointly sponsored by NASA and Lockheed Martin.[14][15] In celebration of Space Day in May 2007, students from over 500 schools around the world signed giant posters. Their signatures were scanned onto a disk, and the disk was manifested on the STS-120 mission.[14]
Also during STS-120, the lightsaber used by actor Mark Hamill in the 1983 film Return of the Jedi was flown to the station and returned to Earth.[16] Stowed on-board Discovery for the length of the mission, the prop was flown in honor of the 30th anniversary of the Star Wars franchise.[17] On August 28, 2007, Chewbacca from the Star Wars films presented the lightsaber to NASA officials from Space Center Houston, in an official ceremony at Oakland International Airport.[17] The lightsaber was then flown to Houston, where it was greeted by Stormtroopers. The lightsaber will be displayed at Space Center Houston.[17]
Seats 1–4 are on the flight deck. Seats 5–7 are on the mid-deck.
1
Melroy
2
Zamka
3
Parazynski
Nespoli
4
Wilson
5
Wheelock
6
Nespoli
Parazynski
7
Tani
Anderson
Mission background
At the time of the Columbia disaster, STS-120 was scheduled for early 2004. It was delayed repeatedly until October 23, 2007.
NASA originally scheduled the launch for October 20, 2007, but due to the International Space Station program requirement, launch was delayed to October 23, 2007.[19]
In light of the small gouge to the underside of Endeavour that occurred on STS-118, in August 2007, NASA managers announced that they expected to add a fifth spacewalk to the STS-120 mission, designed to test a heat-shield repair tool.[20] The repair technique was originally scheduled for a flight in 2008, but following STS-118, it was decided to move up the testing. The repair tool, called a TPS (thermal protection system) repair ablator dispenser (T-RAD), has never been tested in space, so the spacewalk would have allowed managers to evaluate its effectiveness in low gravity environments.[21] During the course of the mission, issues with the S4starboardSolar Alpha Rotary Joint (SARJ), and P6 Solar Array, deferred this test objective to a future mission.
Following STS-118 in August 2007, NASA managers decided to make modifications to the external tank to be used on STS-120, and modify the liquid oxygen feed-line brackets.[22] The change involved a new low-density foam application, and thinner gaskets. Shuttle Program Managers decided to do this to reduce the foam loss from the area that had been noted since STS-114's "Return to Flight" mission in 2005. STS-118 had a small gouge on the belly of the orbiter due to a chunk of foam that impacted during launch in August 2007. The week of September 17, 2007, NASA managers decided to delay Discovery's rollover to the Vehicle Assembly Building (VAB), due to a hydraulic fluid leak from the right main landing gear strut. The strut repair was successfully completed on September 19, 2007. Discovery then moved to the VAB, and was mated to the External Tank and Solid Rocket Boosters. Perched atop the mobile launcher platform, Discovery arrived at Launch complex 39A on September 30, 2007.[23][24]
The crew of STS-120 arrived at Kennedy Space Center on October 7, 2007, and began final preparations, including the terminal countdown demonstration test, or "Dress Rehearsal", scheduled for October 7, 2007, through October 10, 2007.[25][26][27]
On October 9, 2007, NASA's Engineering and Safety Center, an independent review group set up after the 2003 Columbia disaster, advised replacement of three of Discovery'sreinforced carbon-carbon (RCC) panels on the leading wing edge, due to a loss of small amounts of the protective silicon-carbide coating.[28][29] NASA reviewed the issue of oxidation of the panels for several months, using a variety of specialized testing methods, including thermography.[30][31] These tests showed that the panels had not worsened over the course of the past two flights of Discovery, and the orbiter project engineers concluded in August that Discovery was safe to launch as is.[29][30][32] Had a decision been made to repair the panels, the orbiter would have been rolled back to the VAB, delaying the launch.[28][29][30]
On October 16, 2007, NASA Managers completed the Flight Readiness Review, and held a press conference to announce the mission plan.[33] The issue of the RCC panels raised by NESC was found to be of little immediate concern, because the NESC took pre-flight thermography data from Endeavour and compared it with Discovery, but there was no commonality in flight history between the two vehicles.[34] The research showed no significant difference between the panels prior to STS-114, and the panels today, which indicates the coating has not worsened during the previous flights, adding confidence that Discovery's RCC panels have had no deterioration in the flights since.[34] NASA announced on the main shuttle page that "The Space Shuttle Program has determined that Discovery's astronauts can safely carry out their mission without having to replace the panels."[35]
October 23 (Flight Day 1, Launch)
STS-120 begins its mission.
Discovery launched on time at 11:38 EDT (15:38 UTC).[36][37] In the countdown's final minutes, a piece of ice, measuring 4 inches (10cm) x .5 inches (1.3cm) was seen on the hydrogen umbilical between the orbiter and the external tank.[38] The inspection team was called back to the pad (a contingency that has been practiced, and used before), to get a closer look at the ice build-up. NASA flight controllers deemed it too small to pose a threat to the thermal protection system. The ice was attached to a Kapton purge barrier near the LH2 umbilical pyrotechnic canister closeout.[39] It had been shown in tests that ice on this liner, sometimes called a "baggie", would likely come off at main engine ignition.[40] Had it been on other metal surfaces around the liner, this may have posed a threat of staying on and breaking off at a critical part of launch. Despite these issues, the launch continued as planned. The forecast for launch initially was a 60% chance of weather prohibiting launch, and although the launch team weather officers were tracking an incoming storm, the weather remained favorable for launch.[41] Present for the launch was George Lucas, to see off the Star Wars lightsaber.[42] In a press briefing following launch, NASA managers noted a few "events" involving debris, but they occurred later in ascent, after the period of maximum aerodynamic velocity and speed, and were not concerning.[43]
October 24 (Flight day 2)
The crew of STS-120 spent their first full day in space by performing the RCC survey, using the Shuttle Remote Manipulator System (SRMS), and the Orbiter Boom Sensor System (OBSS).[44] The crew also worked on various tasks such as inspecting the Extravehicular Mobility Units (EMUs, or spacesuits) that will be used on the EVAs, and doing some preliminary work to get ready for docking with the International Space Station on Thursday.[45] Deputy Shuttle Program Manager and Mission Management Team (MMT) chairman John Shannon noted during the status briefing that the preliminary data the team had reviewed showed no items of concern, and the ascent imagery showed no significant losses prior to SRB separation.[46][47] Shannon said there were several items the team was waiting for higher resolution imagery to assess, including a possible protruding gap filler, and some external tank foam losses, but there was nothing to indicate any problems.[39] Shannon also noted that a vapor trail was seen coming off the external tank for several seconds during launch, but noted that this was a condition seen during both STS-114, and STS-121, and was found to be condensate coming off the back side of the tank. Due to the temperature and humidity, combined with the angle of the Sun for Discovery's launch, the plume appeared more dramatic in some of the imagery. This was considered an "expected condition", and Shannon confirmed it was of no concern.[39][47]
October 25 (Flight day 3)
Backdropped by a blue and white Earth, Space Shuttle Discovery approaches the International Space Station.
Whitson (right), Expedition 16 commander, greets STS-120 commander Melroy after opening the hatches between the station and the shuttle.
The crew of STS-120 worked through the rendezvous procedures in the morning leading to the rendezvous pitch maneuver which began at 11:34 UTC. Following the RPM, the crew was given the "Go" to dock with the station, and successful docking to the International Space Station occurred at 12:40 UTC.[48][49] Following docking, the joint crews conducted a station safety review, and Tani's custom Soyuz seatliner was transferred from Discovery to the Soyuz TMA-11, with Anderson's seat liner taken into Discovery. This marked the official end of Expedition 16 for Anderson, and the start of Tani's increment.[50] Just before the two crews signed off to sleep, they were informed that after preliminary review of the RPM photography, focused inspection of the orbiter's heat shield would not be required.[50][51] During the MMT briefing, Shannon confirmed that initial evaluation of the available data showed Discovery to be a "pretty clean vehicle". He also confirmed they were not working any issues or items of interest. Shannon said the piece of ice that was looked at prior to launch dislodged during main engine ignition, and as it fell, the ice appeared to graze the underside of the orbiter at the beginning of ascent, but the area around the impact site was in good condition, and the ice did not appear to have caused any damage.[51] Shannon said the teams would continue to evaluate the imagery and data, but the shuttle was in a good configuration.[52]
October 26 (Flight day 4)
Wheelock prepares for his first EVA. Behind him, Parazynski floats upside down.The interior of Harmony as seen following its attachment to the ISS on flight day 5.
The two crews started the day by preparing for the mission's first spacewalk, which began at 10:02 UTC, and ended at 16:16 UTC. Parazynski and Wheelock successfully completed all EVA activities, including preparing Harmony for removal from the payload bay.[53] Wilson, Tani, and Anderson controlled the station's robotic arm, moving Harmony out of the bay and onto the port side of the Unity node. At 15:38 UTC, Harmony was officially mated to the space station.[53][54] The station's new addition adds 2,666 cubic feet (75.5m3) to the station's living volume, an increase of almost 20%, from 15,000 cubic feet (420m3) to 17,666 cubic feet (500.2m3).[55][56]
At the Mission Management Team meeting, managers cleared Discovery's heat shield for reentry, and verified that focused inspection was not required, but noted that late inspection will still be performed on flight day 13 following undocking.[54][55][57] John Shannon mentioned that managers have decided to add a task to the second EVA, asking the astronauts to visually inspect the Solar Alpha Rotary Joint (SARJ) on the starboard side, as the joint has registered some vibration for the past month and a half. While the friction is not constant or severe, managers will have Tani remove the insulation covers from the joint to photograph the swing bolts on the joint since Tani would be near the area during the EVA.[55]
October 27 (Flight day 5)
Stephanie Wilson floats with a model of Harmony on the middeck of Discovery.
The two crews worked to prepare Harmony for entry in the morning, connecting power and data cables, and at 12:24 UTC, the hatch was opened, and the crew was allowed to enter.[58] Whitson, Malenchenko, and Nespoli entered first, wearing masks, and installed a temporary air duct to the node, to allow the air inside to circulate through the station's filters.[58] Until the air is fully exchanged, occupancy of the node is limited to only a few crew members at a time, and they are not to remain inside for extended periods. Some of the work the crew has to do inside the node is to remove approximately 700 screws and bolts that are holding down equipment and panels, placed for security during launch, but not needed in space.[58] After allowing the ventilation system work for several hours, the two crews participated in a press conference with CBS, Fox News, and WHAM-TV from inside Harmony.[59][60]
October 28 (Flight day 6)
The two crews awoke at 05:08 UTC, and began preparing for the second EVA. Parazynski and Tani began the spacewalk at 09:32 UTC, a half-hour ahead of the planned timeline.[61] The pair started with the P6 truss, removing the attachments to the Z1 truss, which allowed Wilson and Wheelock to use the station's robotic arm to move the truss to a position where it was "parked" for the night.[61][62] Joking to Wilson "Don't drop it!", Parazynski then moved on and installed handrails onto Harmony, while Tani went to inspect some items requested by the managers, including handrails on a Crew and Equipment Translation Aid (CETA) cart, that was considered as a possible cause of Rick Mastracchio's glove tear on STS-118.[62] Tani noted the handrail appeared to be intact, with no obvious sharp edges.[61] Tani then moved on to the Solar Alpha Rotary Joint (SARJ) that has had an intermittent vibration for over a month. After removing the cover from the joint, Tani called down to the team to let them know he saw some metal shavings, and some wear patterns and discoloration on one of the rings inside the joint.[63] "It's like the result that you get with the metal, iron filings and you put a magnet under it and they stand straight up."[61] Tani collected some of the shavings onto some tape, which returned to Earth with the shuttle for further analysis.[61] Managers decided to add a task to Tuesday's EVA, having Parazynski inspect the port (left side) SARJ, using photography and video to compare it to the starboard SARJ inspected by Tani.[64]
October 29 (Flight day 7)
The two crews took time out to participate in a joint crew news conference, and to pose for a crew photo.
The two crews used the morning to move the P6 truss from its overnight position on the station's robotic arm, over to the shuttle's robotic arm. The crew then moved the station's arm along the mobile transporter to an outboard work site that allows attachment of the P6 truss to its new location on the P5 truss on Tuesday.[64][65] Managers on the ground had Whitson perform an experiment on the shavings Tani collected from the SARJ on Sunday's EVA, putting a magnet under a slip of paper, and testing to see if the shavings collected on the paper, to ascertain if they were metal.[66] The test confirmed the particles collected by Tani were ferrous. This information allowed the managers on the ground to rule out some possibilities of the origin of the particles, such as the thermal covers, which are made of aluminized mylar.[67][68]
The Mission Management Team discussed the SARJ issues with the ISS team, and decided to add an extra docked day to the mission, between flight days 11 and 12.[69] The new plan changed the objectives of EVA four from the heat shield repair materials testing, to a more thorough inspection of the starboard SARJ.[70] With the new flight plan, Discovery would undock on November 5, 2007, with a landing on November 7, 2007, at approximately 05:11 EST.[68]
October 30 (Flight day 8)
Image taken from a camera mounted on the space station, shows an apparent tear in the 4B solar array, with a smaller separation to the right.
The two crews spent the morning preparing for the mission's third EVA, which began at 08:45 UTC.[71] The EVA completed the installation of the P6 solar arrays onto the P5 truss, and the rest of the EVA activities were accomplished successfully, with the EVA ending at 15:53 UTC. Once the P6 solar array was attached, the process of deploying the arrays began. The first set of arrays, 2B, was successfully deployed with no issues, but during the deployment of the 4B array, the crew halted when they noticed an abnormality.[71] Initial images taken by the crew and station cameras showed what appeared to be a tear in a small portion of the array.[72][73] During a press briefing, ISS Program Manager Mike Suffredini said the crew took high resolution images of the solar array, and the managers would analyze the images overnight to determine a course of action.[74] Sufredini mentioned that with the array in the 90% unfurled position, it was still generating 97% of the expected power to the station, only slightly less than a fully unfurled array.[75]
The crew began the day working through a variety of tasks, including preparing for the fourth EVA, installing a Zero Gravity Stowage Rack in Harmony, and working with some of the experiments on board.[76] Nespoli and Melroy participated in a Public Affairs event (PAO), and received a call from the President of Italy, Giorgio Napolitano. The entire crew took part in a second PAO event, fielding calls from news agencies from the United States, Europe, and Russia.[77] Around 15:00 UTC, mission control informed the crew that Thursday's planned EVA would be postponed to either Friday, or perhaps Saturday, to allow for a new EVA plan to be worked out, which would include troubleshooting of the P6 solar arrays.[77][78]
November 1 (Flight day 10)
STS-120 pilot George Zamka holds a newly manufactured "cufflink" apparatus, one of five cufflinks assembled by crewmembers. The cufflink is designed to take the structural load off of the damaged hinges of the P6 4B solar array.
Shortly after awakening in the morning, the crew was informed that the managers had chosen to take an extra day to evaluate and plan the fourth EVA.[79] Managers initially planned for the EVA to be done on flight day 11, but would use an extra day to conduct further analysis and allow the crew to have extra time to make the tools and equipment needed, and to review and practice the procedures.[79][80] The crew took some time out to gather in the Harmony module to speak with former President George H. W. Bush and his wife, Barbara, who were visiting Johnson Space Center.[81]
The rest of the day was devoted to assembling and configuring the new equipment and tools that would be required for the solar array repair, including a tool termed a "cufflink". The tear in the array is located at one of the hinges, which carries the load of the array, so the cufflink will be a load-bearing strap to relieve the pressure from the snagged area, transferring the load from the hinge, to the cufflink.[82][83] The cufflink is made up of two wires, with two tabs at the end, that are threaded through existing reinforced aluminum holes in the solar array panels.[84] The EVA plans call for the space station's robotic arm to grapple the shuttle's orbital inspection boom, with an extension on the end, to allow Parazynski to reach the solar array while positioned on a foot restraint at the end of the system.[84] Wheelock will be watching to let the team know the clearances, and to assist Parazynski and the robotics team with positioning.[84] With the changes to the timeline, the crew would be shifting their sleep schedule, to allow for a daylight landing on Wednesday, rather than the early morning landing that was originally planned. The fifth EVA that was planned for the Expedition 16 crew during the mission was delayed, and will be performed by the station crew after the shuttle departs.[82]
November 2 (Flight day 11)
The shuttle and station crews spent the day discussing the new EVA plan with managers on the ground, reviewing the procedures, completing the tool configurations, and going over the timeline for the fourth EVA, scheduled for Saturday.[85][86] The crew also positioned the station's mobile transporter and robotic arm on the end of the truss, to allow the apparatus to reach the solar array. Saturday's EVA would be the first operational use of the Orbiter Boom Sensor System (OBSS) to reach a worksite, although the task was tested and demonstrated during STS-121 to show the boom could provide a stable work platform for EVA activities.[85]
November 3 (Flight day 12)
Astronaut Scott Parazynski at the end of the Orbiter Boom Sensor System performing the solar array repair.
After being awakened by the theme music from Star Wars, the station and shuttle crews got to work preparing for the mission's fourth EVA.[85][87] The spacewalk began at 10:03 UTC. After translating out to the robotic arm, Parazynski attached himself to the adjustable portable foot restraint (APFR), and was taken to the solar array worksite.[88][89] Working slowly, with direction from Wheelock and the ground team, Parazynski secured the five cufflinks to the array, and then backed away to observe the deploy action.[90][91] Inside the station, the crew deployed the array a half a "bay" at a time, and the array was fully deployed at 15:23 UTC.[92] After performing additional inspections of both the 2B, and 4B arrays, Parazynski and Wheelock finished the EVA at 17:22 UTC.[93] With the mission's final spacewalk completed, Parazynski has completed seven EVAs, for a total time of 47 hours, 05 minutes, placing him 5th overall for total EVA duration.[94] Wheelock completed three EVAs, for a total time of 20 hours, 41 minutes, and the total EVA time for STS-120 was 27 hours, 14 minutes.[94][95] During the EVA, a pair of needlenose pliers floated free of the equipment, and was observed floating nearby the window by the crew inside the station. The tool floated clear of the station, and was not a hazard.[96]
Illustration of plan
Repair images
OBSS used as an extension boom for Canadarm2.
The placement of the five cufflinks designed to relieve tension from the damaged solar array hinge.
November 4 (Flight day 13)
The International Space Station as seen following undocking. The P6 solar array is visible on the right.
The Shuttle and station crews spent the day transferring cargo, and resting in preparation for Monday's departure of Discovery. Nespoli and Melroy spent some time in the morning speaking to the Italian media, and later in the day the crew had some off-duty time. Following the traditional farewell ceremony, the hatches were closed at 20:03 UTC.[97] During the emotional ceremony, Anderson spoke to the ground crew, expressing his gratitude for their support during his 137 days as an Expedition crewmember.[98]
You all kept me safe, you've shown me unwavering patience and professionalism... And you've all overlooked my shortcomings, and it's my hope that maybe you've even had a few laughs along the way... What I'd like to say is: What we are doing here is very important for all of human kind. It's worth the risk, it's worth the cost, and you folks on the ground are the people who make it happen. So I want you to take pride in your work and constantly look toward the heavens, for it is there you will see your future. For all the flight control, training and engineering teams in Houston, Huntsville and Moscow... I say thank you, you are indeed the best and the brightest that our world has to offer.[98]
—Clayton Anderson
November 5 (Flight day 14)
The two crews spent the morning preparing for Discovery's undocking from the International Space Station.[99] At 10:32 UTC, the orbiter successfully backed away from the Pressurized Mating Adapter on the Destiny Laboratory, and pilot Zamka began the fly-around to allow the shuttle crew to photograph the new configuration of the station.[100][101] After performing the final separation burn, focused inspection began, to scan the wing leading edges and nose cap, the final analysis that allows the ground team to clear the orbiter for re-entry on Wednesday.[102]
November 6 (Flight day 15)
The crew of Discovery spent the day preparing Wednesday's landing.[103] In addition to doing final packing and stowing activities, Melroy and Zamka did a check of the orbiter's systems, including the flight control systems, and the reaction control system jets.[104] The crew took some time out in the morning to speak to the media, and then had a deorbit preparation briefing with the ground team. Melroy performed a burn of the orbiter's engines in the afternoon, an orbit adjustment burn done to refine the orbiter's trajectory for the two Wednesday landing opportunities at Kennedy Space Center. NASA managers officially cleared Discovery's heat shield for landing after reviewing the data sent down by the final inspection on Monday.[105]
November 7 (Flight day 16, Landing)
Discovery makes a smooth landing at the Shuttle Landing Facility, wrapping up a 15-day mission to deliver the Harmony module to the International Space Station.
The crew of Discovery got to work preparing for landing following their wake up call. NASA did not activate either Edwards Air Force Base, or White Sands, as the weather looked favorable for both landing opportunities at Kennedy. The weather forecast at the Shuttle Landing Facility called for good visibility, with mostly sunny skies, although the headwinds would be evaluated, as they had been peaking at 23 knots (43km/h). Due to the sleep shifting done by the crew earlier in the mission to schedule the extra mission days, the landing was done on what is called a "descending" node entry. Unlike ascending node entries, this entry trajectory brought the shuttle diagonally across the United States for the first time since STS-107. The shuttle passed over Vancouver, British Columbia, Canada, and angled down towards Florida.[106] Once the orbiter reached Florida, Melroy performed a 195-degree right overhead turn along the heading alignment cone (HAC) in order to line up for a landing on Runway 33.[103] The first landing opportunity began with a deorbit burn at 16:59 UTC and finished with a landing at 13:01 EST.[106] The deorbit burns were done to slow the orbiter's speed and to drop it out of freefall orbit and on target for the designated runway.[107]
Discovery's payload bay doors were closed at 14:13 UTC, and the crew began fluid loading at 16:00 UTC. Fluid loading is a procedure that involves drinking high salt content fluids, which allows the astronauts to adjust to the return to gravity, and reduces the chance of hypotension upon returning to Earth.[108][109] Shortly after 16:00 UTC, the crew began to get into their launch and entry suits, and ingress into their respective seats for landing.[109] At 16:50 UTC, Entry Flight Director Bryan Lunney gave the crew the "go" for deorbit burn. The initiation of the burn committed Discovery to landing. The burn was initiated at 16:59 UTC, and was one minute and 53 seconds in duration.[109] The deorbit burn is performed while the orbiter is facing opposite its direction of travel, which allows the engines to act as a braking system, slowing its speed by approximately 215 feet per second (66m/s). After the burn, the remaining propellant in the orbiter's maneuvering thrusters was dumped overboard, at 17:13 UTC.[110]Discovery began to feel the effects of gravity around 400,000 feet (120,000m), as it traveled above the North Pacific Ocean at 17:30 UTC.[110] As the orbiter descended, Melroy initiated a series of "rolls", and roll reversals, which serve to create friction and bleed off additional speed. At 17:40 UTC, Discovery entered the United States, flying over Montana. At 17:53, the orbiter entered Florida, flying at a speed of 3,500mph (5,600km/h), and an altitude of 118,000 feet (36,000m).[110]
Discovery touched down on runway 33 at 13:01:18 EST, the rear landing gear touching down first, the nose gear touching down at 13:01:32 EDT, and the orbiter came to a complete stop at 13:02:13 EDT.[110][111] Total mission time was 15 days, 2 hours, 23 minutes, 55 seconds, for a distance of 6.25million miles in 238 orbits.[1][112] The completion of STS-120 marks the longest duration mission for Discovery.
Four spacewalks were scheduled and completed during STS-120.[113] The cumulative time in extra-vehicular activity during the mission was 27 hours and 14 minutes.[113]
P6 to P5 attachment. P6/P5 umbilical connections, S1 configure post-redeploy, port SARJ inspection.
EVA4
Scott E. Parazynski Douglas H. Wheelock
November 3, 2007 10:03 UTC
November 3, 2007 17:22 UTC
7 hours, 19 minutes
Inspection and repair of P6 Solar Array.
ESA Esperia mission
This section needs expansion. You can help by adding to it. (October 2007)
In addition to his participation in the ISS assembly mission during the STS-120 flight, Paolo Nespoli conducted science research as part of the Esperia mission for ESA.[114][115] According to the STS-120 press kit, Nespoli was to carry out a number of experiments on behalf of the European science community.[2][114] Two of these experiments (Chromosome‐2 and Neocytolysis) were sponsored by ESA. The other three (HPA, FRTL‐5 and SPORE) were sponsored by the Italian Space Agency. Chromosome‐2, Neocytolysis and HPA were experiments in the field of human physiology. FRTL‐5 and SPORE were biology experiments.[115]
Wake-up calls
NASA began a tradition of playing music to astronauts during the Gemini program, which was first used to wake up a flight crew during Apollo 15. Each track is specially chosen, often by their families, and usually has a special meaning to an individual member of the crew, or is applicable to their daily activities.[116]
STS-320 was the designation given to the Contingency Shuttle Crew Support mission which would have been launched in the event Space Shuttle Discovery became disabled during STS-120.[117] It would have been a modified version of the STS-122 mission, which would have involved the launch date being brought forward. If it had been needed, it would have been launched no later than January 5, 2008. The crew for this mission would have been a four-person subset of the full STS-122 crew.[117]
Space Shuttle Atlantis is a retired Space Shuttle orbiter vehicle which belongs to NASA, the spaceflight and space exploration agency of the United States. Atlantis was manufactured by the Rockwell International company in Southern California and was delivered to the Kennedy Space Center in Eastern Florida in April 1985. Atlantis is also the fourth operational and the second-to-last Space Shuttle built. Its maiden flight was STS-51-J made from October 3 to 7, 1985.
STS-92 was a Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle Discovery. STS-92 marked the 100th mission of the Space Shuttle and Discovery's 28th flight. It was launched from Kennedy Space Center, Florida, 11 October 2000.
STS-97 was a Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle Endeavour. The crew installed the first set of solar arrays to the ISS, prepared a docking port for arrival of the Destiny Laboratory Module, and delivered supplies for the station's crew. It was the last human spaceflight of the 20th century.
STS-115 was a Space Shuttle mission to the International Space Station (ISS) flown by Space ShuttleAtlantis. It was the first assembly mission to the ISS after the Columbia disaster, following the two successful Return to Flight missions, STS-114 and STS-121. STS-115 launched from LC-39B at the Kennedy Space Center on September 9, 2006, at 11:14:55 EDT.
STS-116 was a Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle Discovery. Discovery lifted off on December 9, 2006 for her 33rd flight at 20:47:35 EST. A previous launch attempt on December 7 had been canceled due to cloud cover. It was the first night launch of a Space Shuttle since STS-113 in November 2002.
STS-117 was a Space Shuttle mission flown by Space Shuttle Atlantis, launched from pad 39A of the Kennedy Space Center on June 8, 2007. Atlantis lifted off from the launch pad at 19:38 EDT. Damage from a hail storm on February 26, 2007, had previously caused the launch to be postponed from an originally-planned launch date of March 15, 2007. The launch of STS-117 marked the 250th orbital human spaceflight. It was also the heaviest flight of the Space Shuttle.
STS-118 was a Space Shuttle mission to the International Space Station (ISS) flown by the orbiter Endeavour. STS-118 lifted off on August 8, 2007, from launch pad 39A at Kennedy Space Center (KSC), Florida and landed at the Shuttle Landing Facility at KSC on August 21, 2007.
STS-119 was a Space Shuttle mission to the International Space Station (ISS) which was flown by Space Shuttle Discovery during March 2009. It was Discovery's 36th flight. It delivered and assembled the fourth starboard Integrated Truss Segment (S6), and the fourth set of solar arrays and batteries to the station. The launch took place on March 15, 2009, at 19:43 EDT. Discovery successfully landed on March 28, 2009, at 15:13 pm EDT.
STS-122 was a NASA Space Shuttle mission to the International Space Station (ISS), flown by the Space ShuttleAtlantis. STS-122 marked the 24th shuttle mission to the ISS, and the 121st Space Shuttle flight overall.
STS-127 was a NASA Space Shuttle mission to the International Space Station (ISS). It was the twenty-third flight of Space ShuttleEndeavour. The primary purpose of the STS-127 mission was to deliver and install the final two components of the Japanese Experiment Module: the Exposed Facility, and the Exposed Section of the Experiment Logistics Module (ELM-ES). When Endeavour docked with the ISS on this mission in July 2009, it set a record for the most humans in space at the same time in the same vehicle, the first time thirteen people have been at the station at the same time. Together they represented all ISS program partners and tied the general record of thirteen people in space with the first such occurrence of 1995.
Expedition 14 was the 14th expedition to the International Space Station (ISS). Commander Michael López-Alegría, and flight engineer Mikhail Tyurin launched from Baikonur Cosmodrome on 18 September 2006, 04:09 UTC, aboard Soyuz TMA-9. They joined Thomas Reiter, who had arrived at the ISS on 6 July 2006 aboard Space Shuttle Discovery during mission STS-121. In December 2006, Discovery mission STS-116 brought Sunita Williams to replace Reiter as the third member of Expedition 14. On 21 April 2007, López-Alegría and Tyurin returned to Earth aboard TMA-9. Landing occurred at 12:31:30 UTC.
STS-126 was the one hundred and twenty-fourth NASA Space Shuttle mission, and twenty-second orbital flight of the Space Shuttle Endeavour (OV-105) to the International Space Station (ISS). The purpose of the mission, referred to as ULF2 by the ISS program, was to deliver equipment and supplies to the station, to service the Solar Alpha Rotary Joints (SARJ), and repair the problem in the starboard SARJ that had limited its use since STS-120. STS-126 launched on 15 November 2008 at 00:55:39 UTC from Launch Pad 39A (LC-39A) at NASA's Kennedy Space Center (KSC) with no delays or issues. Endeavour successfully docked with the station on 16 November 2008. After spending 15 days, 20 hours, 30 minutes, and 30 seconds docked to the station, during which the crew performed four spacewalks, and transferred cargo, the orbiter undocked on 28 November 2008. Due to poor weather at Kennedy Space Center, Endeavour landed at Edwards Air Force Base on 30 November 2008 at 21:25:09 UTC.
STS-133 was the 133rd mission in NASA's Space Shuttle program; during the mission, Space Shuttle Discovery docked with the International Space Station. It was Discovery's 39th and final mission. The mission launched on February 24, 2011, and landed on March 9, 2011. The crew consisted of six American astronauts, all of whom had been on prior spaceflights, headed by Commander Steven Lindsey. The crew joined the long-duration six person crew of Expedition 26, who were already aboard the space station. About a month before lift-off, one of the original crew members, Tim Kopra, was injured in a bicycle accident. He was replaced by Stephen Bowen.
STS-124 was the 35th mission of Space Shuttle Discovery. She went to the International Space Station on this mission. Discovery launched on May 31, 2008, at 17:02 EDT, moved from an earlier scheduled launch date of May 25, 2008, and landed safely at the Kennedy Space Center's Shuttle Landing Facility, at 11:15 EDT on June 14, 2008. Its objective was to deliver the largest module of the space station – Kibō, the Japanese Experiment Module pressurized section. The mission is also referred to as ISS-1J by the ISS program.
STS-129 was a NASA Space Shuttle mission to the International Space Station (ISS). Atlantis was launched on November 16, 2009, at 14:28 EST, and landed at 09:44 EST on November 27, 2009, on runway 33 at the Kennedy Space Center's Shuttle Landing Facility. It was also the last Shuttle mission of the 2000s.
STS-131 was a NASA Space Shuttle mission to the International Space Station (ISS). Space ShuttleDiscovery launched on April 5, 2010, at 6:21 am from LC-39A, and landed at 9:08 am on April 20, 2010, on runway 33 at the Kennedy Space Center's Shuttle Landing Facility. The mission marked the longest flight for Space Shuttle Discovery and its 38th and penultimate flight.
Expedition 16 was the 16th expedition to the International Space Station (ISS). The first two crew members, Yuri Malenchenko and Peggy Whitson, launched on 10 October 2007, aboard Soyuz TMA-11, and were joined by spaceflight participant Sheikh Muszaphar Shukor, the first Malaysian in space.
STS-134 was the penultimate mission of NASA's Space Shuttle program and the 25th and last spaceflight of Space ShuttleEndeavour. This flight delivered the Alpha Magnetic Spectrometer and an ExPRESS Logistics Carrier to the International Space Station. Mark Kelly served as the mission commander. STS-134 was expected to be the final Space Shuttle mission if STS-135 did not receive funding from Congress. However, in February 2011, NASA stated that STS-135 would fly "regardless" of the funding situation. STS-135, flown by Atlantis, took advantage of the processing for STS-335, the Launch on Need mission that would have been necessary if the STS-134 crew became stranded in orbit.
Since construction started, the International Space Station programme has had to deal with several maintenance issues, unexpected problems and failures. These incidents have affected the assembly timeline, led to periods of reduced capabilities of the station and in some cases could have forced the crew to abandon the space station for safety reasons, had these problems not been resolved.
↑ School City of Hobart – Ridge View Elementary School (2007). "Ridge View Signatures in Space". School City of Hobart. Archived from the original on October 11, 2007. Retrieved October 10, 2007.
↑ NASA (2007). "Space Shuttle Discovery is "Go" for Launch". Note: NASA does not archive versions of main shuttle page – date referenced statement appeared is October16, 2007. NASA. Archived from the original on April 25, 2013. Retrieved October 16, 2007.
1 2 3 William Harwood for CBS News (2007). "Astronauts enter Harmony". Spaceflight Now. Archived from the original on October 29, 2007. Retrieved October 27, 2007.
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
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