Fwd: Cygnus Rendezvous Timeline...

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From: "Moon, Larry J. (JSC-EA411)" <larry.j.moon@nasa.gov>
Date: September 19, 2013 2:14:36 PM GMT-06:00
To: "Moon, Larry J. (JSC-EA411)" <larry.j.moon@nasa.gov>
Subject: FW: Cygnus Rendezvous Timeline...

 

 

Below  is an update to reflect flight dynamics updates to some of the rendezvous burn times, TGO & dV. Capture and berthing times have not changed with Station arm grapple at 6:25 am CDT Sunday (7:25 EDT) and berthing completed a few hours later.

 

 

 

CYGNUS DEMO-1 RENDEZVOUS TIMELINE

 

 

Wednesday            September 18

 

  CDT               EDT              EVENT

  9:58 am        10:58 am        Stage 1 ignition

  9:58:02 am  10:58:02 am LAUNCH (ISS 261 statute up & Above South Atlantic)

 

  4:07 pm          5:07 pm        Delta Velocity (DV1) Rndv Burn (6:17 / 77 mph)

  8:27 pm          9:27 pm        Demo Abort (1:59 / 3.4 mph)

 

Thursday                September 19

 

  CDT               EDT              EVENT

12:54 am          1:54 am        DV2 Rndv Burn (2:59 / 43.7 mph)

11:52 am        12:52 pm        DV3 Rndv Burn (2:44 / 40.3 mph)

 

Friday              September 20

 

  CDT               EDT              EVENT

  1:28 pm          2:28 pm        DV4 Rndv Burn (56 sec / 13.8 mph)

  7:54 pm          8:54 pm        Plane Maneuver (35 sec / 8.7 mph)

 

Saturday         September 21

 

  CDT               EDT              EVENT

  2:13 am          3:13 am        DV5 Rndv Burn (7 sec / 1.8 mph)

  9:07 am        10:07 am        DV6 Rndv Burn (7 sec / 1.8 mph)

  2:34 pm          3:34 pm        DV7 Rndv Burn (2 sec / 0.4 mph)

  9:29 pm        10:29 pm        DV8 Rndv Burn (2 sec / 0.4 mph)

 

 

Sunday           September 22

 

  CDT               EDT              EVENT

12:38 am         1:38 am       Go / No-Go for Joint Operations

  2:01 am          3:01 am        Joint Targeting Reference Point (JTRP) Arrival

  2:08 am        3:08 am       Go / No-Go 1 (Approach Delta Velocity 1 & 2)

  2:16 am          3:16 am        ADV1 Rndv Burn

  2:59 am          3:59 am        ADV2 Rndv Burn

  3:03 am          4:03 am        Disable SCAN (Range 3.7 statute miles / 6 km)

  3:18 am          4:18 am        Station begins maneuver to docking attitude (~5 min)

  3:23 am          4:23 am        Station in docking attitude

  3:23 am         4:23 am       Go / No-Go (ADV3 & 4)

  3:30 am         4:30 am       NASA TV RENDEZVOUS COVERAGE BEGINS

  3:38 am          4:38 am        ADV3 (AI) Rndv Burn

  3:46 am          4:46 am        Range 1000 meters (3,280 feet)

  3:52 am          4:52 am        ADV4 Rndv Burn

  4:10 am          5:10 am        First 250 meter arrival (820 feet)

  4:15 am          5:15 am        First 250 meter departure

  4:18 am          5:18 am        Retreat Demo start

  4:24 am          5:24 am        Retreat Demo end / Second 250 meter arrival

  4:29 am          5:29 am        Second 250 meter departure

  4:32 am          5:32 am        Hold Demo start / 220 meter arrival (722 feet)

  5:12 am         6:12 am       Go / No-Go inside Keep-Out Sphere (KOS)

  5:17 am          6:17 am        Departure from 220 meter hold point

  5:27 am          6:27 am        Range 100 meters (328 feet)

  5:41 am          6:41 am        30 meter Hold Point arrival (98 feet)

  6:01 am          7:01 am        Capture Attempt 1 (earliest Go) – Sunrise + 1 min

  6:06 am          7:06 am        30 meter Hold Point departure (delayed for lighting)

  6:15 am          7:15 am        Capture Attempt 1 (earliest Capture Point arrival)

  6:15 am          7:15 am        Capture Point arrival

  6:20 am         7:20 am       Go / No-Go for capture

  6:23 am          7:23 am        Station to free drift

  6:25 am         7:25 am       CYGNUS CAPTURE (Station arm grapple)

  6:27 am          7:27 am        Station to attitude control (U.S. thrusters only)

  8:15 am          9:15 am        Cygnus berth to Harmony nadir docking port begins

10:20 am        11:20 am        Cygnus berth complete (2^nd stage capture)

  Noon              1:00 pm       NASA TV: Cygnus post capture news conference

 

END