STS-110

STS-110 was a Space Shuttle mission to the International Space Station (ISS) on 8–19 April 2002 flown by Space Shuttle Atlantis. The main purpose was to install the S0 Truss segment, which forms the backbone of the truss structure on the station.

STS-110

Canadarm2 grapples the first segment of the ISS' Integrated Truss Structure
Names	Space Transportation System-110
Mission type	ISS assembly
Operator	NASA
COSPAR ID	2002-018A
SATCAT no.	27413
Mission duration	10 days, 19 hours, 43 minutes, 38 seconds
Distance travelled	7,240,000 kilometers (4,500,000 mi)
Orbits completed	171
Spacecraft properties
Spacecraft	Space Shuttle Atlantis
Launch mass	116,609 kilograms (257,079 lb)[1]
Landing mass	91,016 kilograms (200,657 lb)[1]
Payload mass	13,132 kilograms (28,951 lb)
Crew
Crew size	7
Members	Michael J. Bloomfield Stephen N. Frick Rex J. Walheim Ellen L. Ochoa Lee M. E. Morin Jerry L. Ross Steven L. Smith
Start of mission
Launch date	8 April 2002 20:44:19 (2002-04-08UTC20:44:19Z) UTC
Launch site	Kennedy, LC-39B
End of mission
Landing date	19 April 2002 16:26:57 (2002-04-19UTC16:26:58Z) UTC
Landing site	Kennedy, SLF Runway 33
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	155 kilometres (96 mi)
Apogee altitude	225 kilometres (140 mi)
Inclination	51.6 degrees
Period	88.3 minutes
Docking with ISS
Docking port	PMA-2 (Destiny forward)
Docking date	10 April 2002 16:05 UTC
Undocking date	17 April 2002 18:31 UTC
Time docked	7 days, 2 hours, 26 minutes
In front, (L-R): Stephen N. Frick, Ellen L. Ochoa, Michael J. Bloomfield; In the back, (L-R): Steven L. Smith, Rex J. Walheim, Jerry L. Ross and Lee M. E. Morin. Space Shuttle program ← STS-109 STS-111 →

Crew

Position	Astronaut
Commander	Michael J. Bloomfield Third and last spaceflight
Pilot	Stephen N. Frick First spaceflight
Mission Specialist 1	Rex J. Walheim First spaceflight
Mission Specialist 2 Flight Engineer	Ellen L. Ochoa Fourth and last spaceflight
Mission Specialist 3	Lee M. E. Morin Only spaceflight
Mission Specialist 4	Jerry L. Ross Seventh and last spaceflight
Mission Specialist 5	Steven L. Smith Fourth and last spaceflight

Mission highlights

Illustration of the International Space Station after STS-110

The main purpose of STS-110 was to attach the stainless steel S0 Truss segment to the International Space Station (ISS) to the Destiny Laboratory Module. It forms the backbone of the station to which the S1 and P1 truss segments were attached (on the following missions STS-112 and STS-113, respectively).

STS-110 also delivered the Mobile Transporter (MT), which is an 885 kilograms (1,951 lb) (1,950 lb) assembly that glides down rails on the station integrated trusses. The MT was designed and manufactured by Astro Aerospace in Carpinteria, CA. During the next shuttle mission, STS-111, the Mobile Base System (MBS) was mounted to the MT. This Mobile Servicing System (MSS) allows the Canadarm2 to travel down the length of the installed truss structure.

Flight Day 1: Launch

After a launch scrub on 4 April 2002 due to a hydrogen leak, Space Shuttle Atlantis successfully launched on 8 April 2002, from Launch Complex 39B. The countdown on 8 April encountered an unscheduled hold at the T−5-minute mark due to data dropouts in a backup Launch Processing System. The Launch Processing System team reloaded the required data and the countdown resumed. Liftoff occurred with 11 seconds remaining in the launch window.^[2]

STS-110 was the first shuttle mission to feature the upgrade Block II main engines, which featured an "improved fuel pump...a stronger integral shaft/disk, and more robust bearings". The intent of the upgrade was to increase the flight capacity of the engines, while increasing reliability and safety.^[3]

With the launch of Atlantis, mission specialist Jerry Ross became the first human to have traveled to space seven times.^[4]

Attempt	Planned	Result	Turnaround	Reason	Decision point	Weather go (%)	Notes
1	4 Apr 2002, 5:17:51 pm	Scrubbed	—	Technical	4 Apr 2002, 9:27 am	60%	Leak developed in a hydrogen fuel vent line.[5]
2	8 Apr 2002, 4:44:19 pm	Success	3 days 23 hours 26 minutes			60%

Crew seat assignments

Seat[6]	Launch	Landing	Seats 1–4 are on the flight deck. Seats 5–7 are on the mid-deck.
1	Bloomfield
2	Frick
3	Walheim	Morin
4	Ochoa
5	Morin	Walheim
6	Ross
7	Smith

Spacewalks

	Mission	Spacewalkers	Start – UTC	End – UTC	Duration	Mission
35.	STS-110 EVA 1	Steven Smith Rex Walheim	11 April 2002 14:36	11 April 2002 22:24	7 h, 48 min	Installed S0 Truss on Destiny
36.	STS-110 EVA 2	Jerry Ross Lee Morin	13 April 2002 14:09	13 April 2002 21:39	7 h, 30 min	Continued S0 Truss install
37.	STS-110 EVA 3	Steven Smith Rex Walheim	14 April 2002 13:48	14 April 2002 20:15	6 h, 27 min	Reconfigure Canadarm2 for S0 truss
38.	STS-110 EVA 4	Jerry Ross Lee Morin	16 April 2002 14:29	16 April 2002 21:06	6 h, 37 min	Install future EVA hardware

Media

• Launch video (1 minute 29 seconds)
• 
  The three newly enhanced Space Shuttle Main Engines ignite to launch Space Shuttle Atlantis, 8 April 2002
• 
  Astronaut Lee Morin on the second spacewalk
• 
  Space Shuttle Atlantis lands at the Shuttle Landing Facility, 19 April 2002

See also

• Spaceflight portal

• List of human spaceflights
• List of International Space Station spacewalks
• List of Space Shuttle missions
• List of spacewalks and moonwalks 1965–1999
• Outline of space science