DMSP-5D3 (Defense Meteorological Satellite Program Block 5D3) is the eleventh and most recent version of the military meteorological satellites of the Defense Meteorological Satellite Program.
This series introduced a improved version of the DMSP-5D2 3-axis stabilized bus with integrated propulsion system, so that the satellite itself acted as an upper stage for the launch vehicle. It consisted of a single Star-37XFP motor and the ISS (Integrated Stage System) control system featuring four axial hydrazine thrusters. Power was supplied by a single, articulated 8-segmented solar array.
The first two satellites (F15, F16) were launched on Titan-2(23)G rockets and required a Star-37XFP kick motor for orbit insertion. The later satellites (F17 -F20) switched to more powerful EELV class launch vehicles (Atlas-5(401), Delta-4M), which are capable of direct orbit insertion, so the solid fuel kick motor is ommited in these satellites.
Instruments on this series are:
Following instruments are on the individual satellites:
|DMSP-5D3 F-15:||OLS, SSM/I, SSJ/4, SSI/ES-2, SSM-Boom, SSZ|
|DMSP-5D3 F-16:||OLS, SSMIS, SSI/ES-3, SSJ5, SSM-Boom, SSULI, SSUSI, SSF|
|DMSP-5D3 F-17:||OLS, SSMIS, SSI/ES-3, SSJ5, SSM-Boom, SSULI, SSUSI, SSF|
|DMSP-5D3 F-18:||OLS, SSMIS, SSI/ES-3, SSJ5, SSM-Boom, SSULI, SSUSI, SSF|
|DMSP-5D3 F-19:||OLS, SSMIS, SSI/ES-3, SSJ5, SSM-Boom, SSULI, SSUSI, SSF|
|DMSP-5D3 F-20:||OLS, SSMIS, SSI/ES-3, SSJ5, SSM-Boom, SSULI, SSUSI, SSF|
The DMSP-5D3 series was to be succeded by the jointly with NASA and NOAA developed NPOES system, which was cancelled in 2010 due to massive cost overruns. As a replacement, they were to be replaced by the military DWSS series, which in turn also was cancelled.
The last satellite, DMSP-5D3 F20, which is in storage since the 1990ies, might eventually not launch, as the Senate drafted a bill, which prohibits the Air Force from spending any money on the DMSP-5D3 F20 launch pending certification from the secretary of defense that the military cannot obtain comparable data at a lower cost from other sources, such as civilian or international weather satellites.
|Type / Application:||Meteorology|
|Operator:||US Air Force|
|Propulsion:||Star-37XFP / ISS (#15, 16); ISS (17 - 20)|
|Power:||Deployable solar array, batteries|
|Lifetime:||5 years (design)|
|Mass:||~1200 kg (#17 - #20)|
|Orbit:||857 km × 857 km; 99° SSO|
|DMSP-5D3 F15 (DMSP-5D3 S15, USA 147)||1999-067A||12.12.1999||Va SLC-4W||Titan-2(23)G Star-37XFP-ISS|
|DMSP-5D3 F16 (DMSP-5D3 S20, USA 172)||2003-048A||18.10.2003||Va SLC-4W||Titan-2(23)G Star-37XFP-ISS|
|DMSP-5D3 F17 (DMSP-5D3 S17, USA 191)||2006-050A||04.11.2006||Va SLC-6||Delta-4M|
|DMSP-5D3 F18 (DMSP-5D3 S18, USA 210)||2009-057A||18.10.2009||Va SLC-3E||Atlas-5(401)|
|DMSP-5D3 F19 (DMSP-5D3 S19, USA 249)||2014-015A||03.04.2014||Va SLC-3E||Atlas-5(401)|
|DMSP-5D3 F20 (DMSP-5D3 S16)||-||cancelled||Va||Delta-4M or Atlas-5(401) or Falcon-9 v1.2|