Wednesday, December 19, 2018

SpaceX Targeting Dec. 20 for 3rd Launch Attempt of Inaugural New GPS Constellation on Falcon 9 after 2nd Scrub Today


SpaceX Falcon 9 rocket poised for liftoff carrying GPS III SV01 mission for the US Air Force from Space Launch Complex-40 on Cape Canaveral Air Force Station, FL, on Dec. 20, 2018.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
Ken Kremer  --SpaceUpClose.com & RocketSTEM –19 December 2018

CAPE CANAVERAL AIR FORCE STATION, FL- Will the third time be the charm? After scrubbing this morning’s 2nd attempt to launch the 1st in a powerful new series of GPS satellites on an expendable SpaceX Falcon 9 rocket less than three hours before liftoff to continue working on the technical issue that scrubbed the first launch attempt, Elon Musk’s company announced late tonight, Wednesday, Dec. 19 that they will attempt a third try tomorrow morning.

The late breaking news of a third try comes amid forecast of really unfavorable weather on the Florida Space Coast.

However SpaceX has apparently resolved the technical issue with the first stage fueling sensor that scrubbed the first attempt Tuesday morning.

“Team is working toward launch of GPS III SV01 tomorrow, December 20. Weather remains a challenge; currently forecasted at 20% favorable during the 26-minute launch window which opens at 9:03 a.m. EST, 14:03 UTC,” SpaceX tweeted this evening.


SpaceX Falcon 9 rocket venting liquid oxygen in the final minutes of countdown for launch on Dec. 18, 2018 until temperature issue forced two 24 hour scrubs to Dec. 20 for 9:03 a.m. EST liftoff of advanced GPS III SV01 mission for the US Air Force from Space Launch Complex-40 on Cape Canaveral Air Force Station, FL.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
Blastoff of the SpaceX Falcon 9 carrying the modernized and advanced GPS III SV01 satellite for the US Air Force is now slated for Thursday, Dec. 20 at 9:03 a.m. EST, 1403 GMT, from Space Launch Complex-40 on Cape Canaveral Air Force Station, FL.

The official Air Force weather forecast only shows a 20% chance of favorable conditions.

The primary concerns are for the Electric Field, Cumulus/Thick Cloud, Disturbed Weather rules.

It wasn’t clear until this evening (Wed., Dec. 19) that a launch attempt would actually occur because SpaceX engineers were sull working the temperature sensor issue.

The second scrub was only announced by SpaceX at 6:32 a.m. EST this morning:

“Standing down from today’s launch attempt of GPS III SV01 to further evaluate out of family reading on first stage sensors; will confirm a new launch date once complete,” SpaceX tweeted.

Sunset at pad 40 awaiting sunrise and SpaceX Falcon 9 launch of GPS III SV01 mission for the US Air Force from Cape Canaveral Air Force Station, FL, on Dec. 20, 2018.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
The Falcon 9 launch window lasts for 26 minutes and extends from 9:03 a.m., 1403 GMT, to 9:29 a.m. EST on Dec. 20. 

Tn case of a scrub for any reason on Thursday, the weather outlook improves slightly on Friday to 40% GO. But improves dramatically on Saturday to 80% GO! 

You can watch the launch on a SpaceX dedicated webcast that starts about 15 minutes prior to the opening of the nominal launch window at:

www.spacex.com/webcast
Up Close view of nose cone atop SpaceX Falcon 9 rocket poised for launch now reset for Dec. 20 for liftoff on GPS III SV01 mission for the US Air Force from Space Launch Complex-40 on Cape Canaveral Air Force Station, FL.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
The Falcon 9 was lowered last night and remained horizontal at Launch Complex 40 this afternoon as witnessed first hand by Space UpClose and other members of the news media as we worked to reset our remote cameras at the pad today.
SpaceX Falcon 9 rocket raised vertical at night prior to planned Dec. 20  liftoff on GPS III SV01 mission for the US Air Force from Space Launch Complex-40 on Cape Canaveral Air Force Station, FL, on Dec. 20, 2018.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
The first abort occurred at the T minus 7 minute mark as teams were loading the rockets propellants in anticipation of blastoff of the next and last SpaceX Falcon 9 of 2018 carrying the maiden modernized and advanced GPS III SV01 satellite for the Air Force. It had been slated for blastoff Tuesday, Dec. 18 at 9:11 a.m. EST, 14:11 GMT, from Space Launch Complex-40 on Cape Canaveral Air Force Station, FL.
SpaceX Falcon 9 rocket venting liquid oxygen in the final minutes of countdown for launch on Dec. 18, 2018 until temperature issue forced two 24 hour scrubs to Dec. 20 for 9:03 a.m. EST liftoff of advanced GPS III SV01 mission for the US Air Force from Space Launch Complex-40 on Cape Canaveral Air Force Station, FL.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
The Falcon 9 will launch in the upgraded Block 5 version on an expendable mission where the first stage booster will not be recovered.  There are no grid fins or landing legs installed on the 15 story tall first stage.

This is the first Block 5 model that will launch in an expendable configuration and not be soft landed either by land or by sea. 

The Air Force wants every drop of fuel available to hurl the GPS III SV01 satellite to the most efficient orbit and maximize the amount of on-board fuel available and minimize the satellites need to utilize the fuel reserves for orbit raising maneuvers.

The satellite will be deployed to medium Earth orbit approximately 1 hour and 56 minutes after liftoff.

The GPS III satellites has a wet weight of 9700 pounds (4,400 kilograms) and is the size of an SUV.
Technicians prepare to encapsulate Lockheed Martin’s GPS III Space Vehicle 01 within a SpaceX payload fairing at Astrotech Space Operations’ Florida facility on Dec. 7.  2018. Scheduled for SpaceX Falcon 9 launch on Dec. 18, 2018.  Credit: Lockheed Martin
From the SpaceX Press Kit:

The United States’ Global Positioning System delivers positioning, navigation, and timing services supporting vital U.S. and allied operations worldwide, and underpins critical financial, transportation, and agricultural infrastructure that billions of users have come to depend on daily. 

The United States Air Force’s first GPS III satellite will augment the current constellation of 31 operational GPS satellites. This newest generation of GPS satellites is designed and built to deliver positioning, navigation, and timing information with three times better accuracy, and up to eight times improved antijamming capability. GPS is used by over four billion users and supports critical missions worldwide. 

GPS is a National Security Space (NSS) mission, critical to national defense. In April 2016, SpaceX was awarded its first NSS mission, GPS III SV01. SpaceX currently has an additional four GPS III missions on contract, all of which will be launched on Falcon 9.

Watch for Ken’s continuing onsite coverage of NASA, SpaceX, ULA, Boeing, Lockheed Martin, Northrop Grumman and more space and mission reports direct from the Kennedy Space Center, Cape Canaveral Air Force Station, Florida and Wallops Flight Facility, Virginia.

Stay tuned here for Ken's continuing Earth and Planetary science and human spaceflight news: www.kenkremer.com –www.spaceupclose.com – twitter @ken_kremer – email: ken at kenkremer.com

Dr. Kremer is a research scientist, journalist and photographer based in the KSC area.


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Ken’s photos are for sale and he is available for lectures and outreach events


Mission patch for GPS III SV01




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