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ILS to Launch Inmarsat Satellite on Atlas V

Payload: Inmarsat 4-F1
Geosynchronous multi-use communications
satellite

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Separated mass: Approx. 5,945 kg (13,106 lbs)

Launch Vehicle: Atlas V, 431 configuration, designated AV-004
-- 4-meter diameter (13.75 ft) Extra Extended
Payload Fairing (13.8 m/45.4 ft)
-- 3 strap-on solid rocket boosters, built by
Aerojet, Sacramento, Calif.
-- Single-engine Lockheed Martin Centaur
upper stage

RD-180 main engine, from Pratt &
Whitney/Energomash
Weight at liftoff: 479,699 kg (1,057,575 lbs)
with payload
Height: 59 m (194 ft)

Launch Date: Thursday, March 10, 2005

Launch Window: 15 minutes
4:42-4:57 p.m. EST
21:42-21:57 GMT

Launch Site: Cape Canaveral Air Force Station, Fla.
Launch Complex 41

End User: Inmarsat Ltd., London

Satellite Manufacturer: EADS Astrium, Toulouse, France

Launch Vehicle Atlas vehicle and Centaur upper stage built by
Manufacturer: Lockheed Martin Space Systems in Denver,
Colo.; San Diego, Calif.; and Harlingen,
Texas.

Launch Services
Provider: International Launch Services, McLean, Va.

Satellite Use: First in next generation of satellites, which
will support Inmarsat's new Broadband Global
Area Network (BGAN), delivering internet and
intranet content and solutions,
video-on-demand, videoconferencing, fax,
e-mail, phone and LAN access at speeds up to
432kbit/s almost anywhere in the world. BGAN
will also be compatible with third-generation
cellular systems.

Satellite Statistics: -- Eurostar E3000 model
-- Largest and most powerful commercial
communications satellite launched by Atlas
to date
-- C- and L-band
-- Capability for more than 200 spot beams
-- Operating position 65 degrees East
longitude
-- 13 years targeted lifetime

Mission Profile: Atlas V will place Inmarsat 4-F1 into orbit
with a super-synchronous transfer orbit
mission, using a parking orbit ascent
trajectory design with two Centaur burn
phases. The mission employs a
guidance-commanded shutdown. The satellite's
own attitude and orbital control system will
perform a series of burns to lower apogee and
raise perigee to geosynchronous altitude,
circularize orbit and reduce inclination.

Spacecraft Separation: About 32 minutes after liftoff

Orbital Parameters: Apogee Altitude: 48,864 nm (90,497.5 km)
(@ Separation) Perigee Altitude: 237.6 nm (4,40 km)
Inclination: 20.83 deg

ILS Mission Statistics: -- 5th commercial flight of Atlas V
-- 2nd Atlas flight in 2005
-- 3rd ILS mission this year
-- Atlas family has perfect record in 75
consecutive flights

NEWS MEDIA ACTIVITIES
All times are EST unless otherwise indicated

Remote Camera Set-up: Meet at Cape Canaveral Air Force Station Pass
& ID at 4 p.m. Wednesday, March 9, for
transfer to van that will take you to Pad 41.

Media Briefing: Pre-launch news conference at 11:30 a.m.
Wednesday, March 9, at the Florida Space
Authority building, 100 Spaceport Way, outside
CCAFS Gate 1.

Vehicle Rollout: Access limited to 15 journalists, reservation
required. RSVP with Julie Andrews of Lockheed
Martin at 321-853-1567. Meet at CCAFS Pass &
ID at 6:30 a.m. Thursday, March 10, for escort
to Pad 41.

Launch Viewing: We will use the Kennedy Space Center Press
Site. Meet at CCAFS Pass & ID at 2:45 p.m.
Thursday, March 10, for Air Force escort.

Live Broadcast: In the U.S., Intelsat IA-6, transponder 9,
C-band, 93 degrees West, downlink frequency
3880 MHz (vertical).

In Europe, New Skies NSS 7, transponder
ENV1/EUH1 Ch 2, Ku-band, 338 degrees East,
downlink frequency 10995.50 (horizontal);
symbol 6.1113, FEC 3/4

Test signals begin about 4 p.m. EST (21:00
GMT).

More Information: General mission information and a live webcast
of the launch will be available on the ILS
website at www.ilslaunch.com. Launch status
updates will be available on the ILS U.S.
domestic Launch Hotline at 1-800-852-4980.



Contacts

International Launch Services (ILS)
Fran Slimmer, 571-633-7462
Mobile: 646-229-4801
Cape Canaveral: 321-476-5283
fran.slimmer@lmco.com
or
Lockheed Martin
Julie Andrews, 321-853-1567
Mobile: 321-750-1000
julie.c.andrews@lmco.com



Source : ILS

Published on ASDNews: Mar 4, 2005

 

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