Intelsat

Intelsat illustration

Description and Purpose: 
Nine Boeing-built geostationary satellites - called Intelsat 21, Intelsat 22, Intelsat 27, Intelsat 29e, Intelsat 33e and three yet to be named - will refresh and add new telecommunications capacity to Intelsat's global satellite fleet.

Customer:
Since 1967, Boeing has built 50 communications satellites for Intelsat Ltd., the leading provider of fixed satellite services worldwide. In July 2009, Intelsat became Boeing's first customer for the Boeing 702MP satellite series when it ordered four spacecraft. In May 2013, Intelsat ordered an additional four 702MP satellites and in July 2014 ordered a ninth.

General Characteristics:
The new spacecraft feature C- and Ku-band capacity optimized to distribute video, network and voice services from Asia and Africa to the Americas and Europe.

IS-22, the first of the four Boeing-built Intelsat satellites, carries 48 C-band and 24 Ku-band transponders for commercial use, as well as an Ultra-High Frequency UHF hosted payload to provide service to the Australian Defence Force. IS-22 was launched March 25, 2012, on a Proton rocket from Baikonur, and will operate in a 72 degrees east orbital slot over the Indian Ocean.

Customer Intelsat Ltd.
Spacecraft Boeing 702MP
Quantity 9
Spacecraft IS-22 IS-21 IS-27 IS-29e IS-33e TBD TBD TBD IS-35e
Launch Date March 25, 2012 Aug. 18,
2012 
Jan. 31,
2013*
2015 2016 TBD TBD TBD TBD
Orbital slot 72° E Longitude 58° W Longitude n/a TBD TBD TBD TBD TBD TBD
Contract Life 15 years 15 years n/a 15 years 15 years 15 years 15 years 15 years 15 years

*launch failure  

The second Intelsat satellite, IS-21, was launched Aug. 18, 2012, and replaces the IS-9 satellite at 58 degrees west.

The third satellite, Intelsat 27, was to carry a UHF hosted payload and offer 20 25-KHz UHF channels capable of serving the U.S. government and other Intelsat clients around the world. The satellite was launched Jan. 31, 2013, but was lost due to a launch failure.

Intelsat 29e, the fourth satellite, will be launched in 2015. It will carry Intelsat's next-generation high-performance system, the Epic platform.

 The additional five 702MPs ordered by Intelsat in May 2013 and July 2014 also will be Epic spacecraft. Intelsat 33e, the first in this additional order, kicks off this series of launches in 2016.

The Intelsat satellites incorporate low-risk, proven technologies based on the Boeing 702HP satellite. The payload is powered by two solar wings, each with three to four panels of ultra triple-junction gallium arsenide solar cells.

Intelsat's new satellites will utilize Boeing Lean manufacturing, which streamlines manufacturing and test through reduced assembly steps, more efficient operational layout and an enhanced supplier management philosophy based on a product line rather than program approach. Because of the modular design, common manufacturing processes such as pulse line and manufacturing line production can be leveraged to accelerate the manufacturing cycle, leading to a faster delivery for the customer.

Background:
The 702MP satellite represents the first major evolution since the introduction of the Boeing 702HP in 1999.

Boeing introduced the 702MP spacecraft in 2009 to meet the needs of customers seeking satellites in the middle-level power ranges. Its flexible design supports payloads that range in power from six to 12 kilowatts. The 702MP provides the high-capability features inherent in the flight-proven Boeing 702HP satellite model, but with a substantially updated satellite bus structure and simplified propulsion system.

Designed to provide 15 or more years of satellite service, the 702MP platform is able to accommodate hosted payloads (such as sensors, UHF and Ka-band) for additional flexibility in customer business planning. The Boeing 702MP is compatible with the Atlas, Ariane, Proton and Sea Launch launch vehicles.

The 702MP satellite is designed and built at The Boeing Company's satellite integration and test complex in El Segundo, Calif.

Intelsat Technical Specifications

Payload Coverage

  • UHF communications for the Australian Defence Force
  • C-Band commercial communications coverage over East/West hemispheres
  • Ku-Band commercial communications coverage over Middle East, Africa and MIOR 
Dimensions
In Orbit H, 6.9 m
W, antennas: 9.25 m
L, solar arrays: 36.85 m
Stowed H, 6.9 m
W, 3.3 m x 3.2 m
Mass
Launch
In orbit
(beginning of life)

5,700 kg to 6,400 kg
3,500 kg to 3,800 kg
Propulsion
Liquid apogee engine 100lbf (445N)
Station keeping thrusters 6 x 22N, 4 x 4N
Control thrusters 4 x 22N (Axial)
8 x 4N (North /South)
Payload & Antennas
Antenna
C/Ku
Two 2.25m (90" ) single shaped surface (SSS) offset reflectors, east/west mounted (C-band)
Two 2.25m (90") single shaped surface (SSS) offset reflectors, east/west mounted (Ku-band)
Repeater
C/Ku
Bent-pipe repeater
C-band: 32:24 TWTAs, 70W RF
Ku-band: 24:18 TWTAs, 150W RF
T&C RF C-band 3 CMD receivers and 2 TLM transmitters
UHF Nadir mounted diplexed UHF helix antenna comprised of 4 helices
Two Digital Receiver Units
12:9 SSPA's
Power
Solar Panels 11.8 kw, end of life
Construction Two wings each with three panels of gallium arsenide solar cells
Batteries Single Li-Ion battery pack with 24 virtual cells (236 Ahr beginning of life)

For more information, read the Intelsat program overview (PDF).