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[return to "SpaceX CRS-3 Mission"]
1. Arjuna+Q1[view] [source] 2014-04-18 16:16:15
>>ColinW+(OP)
Here is a CRS-3 launch and ascent event list. Please note that all timings and values are approximate, as I have based them on a mix of CRS-2 profile telemetry and CRS-3 mission notes.

T-00:00:00 - Falcon 9 lift-off. Stage 1's nine Merlin engines produce 1.3M pounds of thrust.

T+00:00:07 - Falcon 9 clears the launch tower.

T+00:01:00 - Altitude: 6km, Velocity: 241m/s, Downrange distance: 1km

T+00:01:10 - Falcon 9 achieves supersonic speed.

T+00:01:23 - Falcon 9 achieves maximum dynamic pressure (Max Q).

T+00:02:00 - Altitude: 30km, Velocity: 1km/s, Downrange distance: 23km

T+00:02:30 - Altitude: 51km, Velocity: 1.8km/s, Downrange distance: 59km

T+00:02:41 - MECO (Main Engine Cut-Off) Altitude: 80km, Velocity: Mach 10

T+00:02:44 - Stage 1 separates from Stage 2.

T+00:02:45 - Stage 2's single Merlin engine ignites.

T+00:03:25 - Dragon's nose cone is jettisoned.

T+00:04:21 - Altitude: 148km, Velocity: 3.2km/s, Downrange distance: 346km

T+00:05:22 - Altitude: 182km, Velocity: 4km/s, Downrange distance: 541km

T+00:06:24 - Altitude: 200km, Velocity: 4.6km/s, Downrange distance: 767km

T+00:07:31 - Altitude: 210km, Velocity: 5.6km/s, Downrange distance: 1,080km

T+00:09:40 - SECO (Second-stage Engine Cut-Off)

T+00:10:15 - Stage 2 separates from Dragon.

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2. chrisB+4k[view] [source] 2014-04-18 19:44:11
>>Arjuna+Q1
But it doesn't reach the space station until some time on Sunday? Can someone explain the long maneuvering time once it is in orbit?
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3. krasin+Lk[view] [source] 2014-04-18 19:53:04
>>chrisB+4k
in short, they save fuel/money at the cost of time.

Instead of going to ISS directly, they have put the Dragon to some cheaper point in the space with some speed vector. After that, it will turn around Earth multiple times, until the orbits of the Dragon and the ISS are closer.

But it's very short and partially incorrect (as they may also have a few correction boosts)

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