Monday, March 20, 2017

CYGNSS

 2016-078D


Cyclone Global Navigation Satellite System, eight SSTL sats on one rocket for wind monitoring in hurricanes.

NASA Earth Venture 2 mission (under the ESSP program), following EV-1 which was an airplane based experiment.

GPS signal scattering can penetrate heavy rain to study storm conditions. PI is C. Ruf (U Mich.). Spacecraft by SWRI and SSTL/Colo who also have the MOC; SOC at Michigan. NASA/Langley supported the project. 8 satellites on the cylindrical Sierra Nevada dispenser; 29 kg each, truncated triangular prism, + 2 solar arrays; 0.51 x 0.64 x 0.27m span 1.7m. The satellites slowly spread out along their orbital plane, their separation controlled by attitude changes which modify drag.

Pegasus takeoff from the Skid Strip and drop 203 km E of Daytona Beach. Possible drop point 29 00N 78.45W


CYGNSS FM01 
 

DateTimeEventOrbit  

2016 Dec 12  1237  Takeoff from RW13 
 1330  Launch abort due to hydraulic system problem 
 1430? Land back at CC 
2016 Dec 15  Launch by Pegasus XL  CCAFS RW31/13  
 1238:00 Takeoff RW13 
 1337:00 Drop at 11.9 km over 78.5W 29.0N 
  L+0:05 St 1 burn 1:13 
  L+1:18 St 1 cutoff 53 km 
  L+1:33 St 1 sep 
  L+1:34 St 2 burn 2:48 
  L+2:12 Fairing sep 
  L+2:48 St 2 cutoff 
  L+6:45 St 2 sep 
  L+6:56 St 3 burn 1:10 
 1345 L+8:04 St 3 burnout  510 x 510 x 35 
 1350 L+13:04 S+0:00 A/C upper Pair 1 out, 1m/s 
  S+0:30 E/G lower Pair 2 
 1351 S+1:00 F/H lower Pair 3 
 1351 L+14:34 S+1:30 B/D upper Pair 4 
  S+10:00 Solar panels deploy 
 1411  L-1011 land at RW31/31 
2017 Jan 24   95.15 514 x 536 x 35.0

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