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- Newsgroups: sci.space
- Path: sparky!uunet!mnemosyne.cs.du.edu!nyx!dnadams
- From: dnadams@nyx.cs.du.edu (Dean Adams)
- Subject: Ariane v.55 Mission Data
- Message-ID: <1992Nov23.062056.13203@mnemosyne.cs.du.edu>
- Sender: usenet@mnemosyne.cs.du.edu (netnews admin account)
- Organization: Nyx, Public Access Unix at U. of Denver Math/CS dept.
- Date: Mon, 23 Nov 92 06:20:56 GMT
- Lines: 88
-
-
- ARIANESPACE FLIGHT 55
-
- The 55th Ariane launch is scheduled to place the SUPERBIRD-A satellite into
- a geostationary transfer orbit (GTO) using an Ariane 42P launch vehicle
- equipped with 2 solid strap-on boosters (PAP). This is the 4th flight of
- an Ariane 4 in the 42P configuration. It will be launched from the Ariane
- launch complex ELA 2, in Kourou -- French Guiana.
-
- The launch vehicle performance requirement for this mission is 2,826 kg,
- of which 2,780 kg represents the satellite mass. The total vehicle mass
- at liftoff is 320,214 kg.
-
-
- Required Orbit Characteristics:
- Perigee Altitude ..... 200 km
- Apogee Altitude ...... 35,963 km at injection
- Inclination .......... 7 degrees
-
-
- The Ariane 42P lift-off for Flight 55 is scheduled on Tuesday December 1,
- 1992, as soon as possible within the following launch window:
-
- Kourou Time GMT Washington, DC
- 19:48 - 20:39 22:48 - 23:39 17:48 - 18:39
-
-
- LAUNCH VEHICLE:
-
- Ariane 42P. This is a three-stage liquid fueled launcher with solid fueled
- strap-on boosters. The first stage (L220) is built by Aerospatiale, and is
- powered by 4 liquid fueled Viking V engines. The second stage (L33) is built
- by MBB Erno and is powered by a single Viking IV engine. Both the Viking IV
- and V engines are manufactured by SEP. The first and second stages use a
- biliquid UH25/N2O4 fuel. The third stage is built by Aerospatiale and is
- the H10 "plus", with larger fuel tanks and increased performance over past
- models. It uses a cryogenic H2/O2 fueled HM-7B engine built by SEP. The two
- strap-on boosters (PAP) are built by BPD and use a solid Flexadrine propellant.
- The fully assembled launch vehicle stands 54.5 meters high on the pad.
- It uses the type 01 Ariane Short payload fairing.
-
-
- Flight Profile:
-
- +01:30 Solid strap-on booster jettison
- +03:28 First stage separation
- +03:30 Second stage ignition
- +04:23 Fairing jettison
- +05:38 Second stage separation
- +05:43 Third stage ignition
- +18:11 Third stage shutdown / orbit injection
- +20:42 SUPERBIRD-A separation
- +20:46 Third stage avoidance maneuver
- +22:23 End of Ariane mission 55
-
-
- PAYLOAD:
-
- Superbird-A is the fourth satellite of a series built by Space Systems/LORAL,
- Palo Alto, Ca. for Space Communications Corporation (Mitsubishi Group), Japan.
- It will be used for domestic communications purposes.
-
- Total mass at lift-off .... 2,780 kg
- Mass at GEO insertion ..... 1,665 kg
- Dry mass .................. 1,155 kg
- On-board power ............ 3,800 W (end of life)
- Nominal lifetime .......... 10 years
- Span of solar panels ...... 20.3 m
- On-Orbit position ......... 158 degrees east, over the Pacific Ocean
-
- Transmission capacity:
- Ku-band: 23 transponders (+8 spares) of 36 mhz bandwidth
- Ka-band: 3 transponders of 100 mhz bandwidth
-
- In-flight operations:
- Solar array deployment ....... about 2.5 hours after lift-off
- First apogee motor firing .... about 26 hours after lift-off at 3rd apogee
- Second/third apogee firings .. at 5th and 7th apogee
-
-
- LAUNCH COVERAGE:
-
- All Ariane missions are broadcast live via satellite from Kourou.
- Coverage begins at 30 minutes before launch and continues until
- all payloads have been deployed.
-
- -{ Dean Adams }-
-
-