19 Jul '16


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The SpaceX Dragon launches atop the Falcon 9 rocket early July 18,2016, from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida. Credit: SpaceX

The International Space Station and SpaceX Dragon flight control teams are proceeding toward rendezvous and grapple of the unpiloted Dragon cargo craft Wednesday, July 20, following Monday’s launch of the spacecraft atop a Falcon 9 rocket from Cape Canaveral Air Force Station in Florida.

Capture of Dragon is scheduled at 7 a.m. EDT. Installation of the Dragon to the Earth-facing port of the Harmony module will begin several hours later.

NASA Television coverage of rendezvous and grapple is scheduled for 5:30 a.m. Wednesday. Installation coverage is set to begin at 9:45 a.m. Watch live at http://www.nasa.gov/nasatv.

NASA’s Expedition 48 Commander Jeff Williams and NASA Flight Engineer Kate Rubins will use the station’s 57.7-foot (17.6-meter) robotic arm to reach out and capture the Dragon spacecraft from the station’s cupola work station. After capture, ground controllers will maneuver Dragon for its berthing to Harmony. Opening of the hatch to the Dragon is scheduled early Thursday.

SpaceX CRS-9 is scheduled to deliver nearly 5,000 pounds of supplies and payloads to the station, including critical materials to directly support dozens of the more than 250 science and research investigations that will occur during Expeditions 48 and 49.

Below is a rendezvous timeline – all times listed in EDT.

Wednesday, July 20
Range < 28 km                                            2:21:00 a.m.
HA3 Burn (8 s, 0.37 m/s)                           3:00:00 a.m.
Sunset                                                          3:11:02 a.m.
HA3-MC1 Burn                                            3:16:40 a.m.
HA3-MC2 Burn                                            3:33:20 a.m.
CE3 Burn (8 s, 0.37 m/s)                             3:46:00 a.m.
Sunrise                                                          3:40:46 a.m.
Range < 6 km                                               4:01:00 a.m.
HA4 (Approach Init) Burn (6 s,0.31 m/s)  4:16:00 a.m.
HA4-MC1 Burn                                             4:32:40 a.m.
Sunset                                                           4:43:43 a.m.
HA4-MC2 Burn                                             4:49:20 a.m.
350m Arrival, 180 deg Yaw mnvr              5:05:10 a.m.
Depart 350m                                                5:11:40 a.m.
Sunrise                                                          5:13:21 a.m.
250m Arrival                                                 5:19:30 a.m.
NASA TV Coverage Begins                          5:30:00 a.m.
250m Departure                                           5:31:30 a.m.
Rng = 100m                                                   5:48:30 a.m.
30m Arrival                                                    6:05:00 a.m.
Sunset                                                            5:16:25 a.m.
Earliest 30m Departure (early window)   6:21:00 a.m.
30m Departure                                            6:24:00 a.m.
Latest 30m Departure (early window)      6:25:00 a.m.
CP Arrival                                                       6:40:00 a.m.
Earliest 30m Departure (prime window)  6:44:56 a.m.
Sunrise                                                           6:45:56 a.m.
Earliest GO for Capture (prime window)  6:46:56 a.m.
Go for Capture                                              6:50:00 a.m.
Capture                                                          7:00:00 a.m.
Latest 30m Departure (prime window)    7:37:31 a.m.
Sunset                                                            7:49:06 a.m.
Latest GO for Capture (prime window)    8:03:31 a.m.

For more information on the SpaceX CRS-9 mission, visit: http://www.nasa.gov/spacex. For more information about the International Space Station, visit: http://www.nasa.gov/station.

UNIVERSAL DIGEST is pleased to be a conduit for some of NASA’s projects and work. This article and some others were written by NASA and are mostly unedited. We do not claim credit, we simply want to make them more available to the general public.

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