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Falcon 1 Flight 4 Launch UPDATES, NET 09/28/2008 7 p.m. - 12 a.m. (09/28 - 09/29)
Matt
post Sep 28 2008, 12:50 PM
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Falcon 1 is currently cleared for liftoff sometime between 4 p.m. and 9 p.m. (California time) tomorrow, Sunday September 28th. Of course, if we see anything that requires investigation, the launch will be postponed, but we’ll let you know as soon as we know. As with prior flights, you can access the webcast from the SpaceX site: www.spacex.com
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post Sep 28 2008, 12:50 PM
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Matt
post Sep 28 2008, 12:52 PM
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Here's a picture of Falcon 1 Flight 4 vehicle on the launch pad at Omelek island, Kwajalein Atoll.
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Attached File  2117.jpg ( 126.41K ) Number of downloads: 13
 
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Matt
post Sep 28 2008, 12:53 PM
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Falcon 1 Flight 4 launch press kit
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Attached File  SpaceX_F1_004_PressKit.pdf ( 1.84MB ) Number of downloads: 23
 
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Matt
post Sep 28 2008, 02:37 PM
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Falcon 1 Flight 4 Launch Sequence Events
Major EventsT+secsT+hh:mm:ssComments
Liftoff00:00:00Vehicle is released from launch mount
Tower clear40:00:04Falcon 1 clears the umbilical tower
Transonic560:00:56Mach 1 - the vehicle becomes supersonic
Max-Q680:01:08Max-Q - the time of maximum dynamic pressure on the vehicle
Inertial Guidance1400:02:20Vehicle switched to inertial guidance mode
Pressurize Stage 21450:02:25Stage 2 pressurized to pre-ignition levels
MECO157.500:02:37Main Engine Cut-off - “MECO”
Stage Separation162.50:02:42Stage separated and pushed apart
2nd Stage Ignition165.50:02:45Kestrel ignition
Past 100 km altitude1680:02:48Falcon 1 crosses the boundary into space - 100 km (62 miles)
Stiffener jettison(approx.) 173(approx.) 0:02:53Jettison of Kestrel nozzle stiffeners
Fairing Separation195.50:03:15The two halves of the “nose cone” separate and fall away, revealing the payload to space.
Terminal Guidance529.40:08:49Vehicle enters terminal guidance mode
Passing 7.5 km/s5740:09:34Falcon 1 has reached orbital velocity
SECO579.370:09:392nd stage engine cut-off - “SECO”
Settling thrusters597.370:09:57Second stage settling thrusters operating
Expect loss of signal6180:10:18“LOS” occurs as the vehicle sinks below the horizon as viewed by the launch range’s receivers
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Matt
post Sep 28 2008, 05:04 PM
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The launch webcast will begin at 6:30 Eastern time (3:30 Pacific). You can watch it here: http://www.spacex.com/webcast.php
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Matt
post Sep 28 2008, 05:34 PM
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Posted September 28, 2008 - 15:02 PDT

After a 15 minute hold, the clock is again counting down towards launch.
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Matt
post Sep 28 2008, 05:37 PM
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Webcast start time is now 6:45 Eastern.
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Matt
post Sep 28 2008, 05:44 PM
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T-30 minutes. After a short unplanned hold, launch is scheduled for 7:15 p.m. EDT
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Matt
post Sep 28 2008, 05:47 PM
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First stage is 95% full of liquid oxygen (LOX) and completely full of fuel (RP-1). The remaining 5% of LOX will be topped off later in the countdown. Second stage is 77% full of LOX, and 68% full of RP-1.
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Matt
post Sep 28 2008, 05:51 PM
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First stage is 95% full of liquid oxygen (LOX) and completely full of fuel (RP-1). LOX topping procedure has begun. Second stage is 97% full of LOX, and 100% full of RP-1.
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