SPACE X ( FALCON 9 OVERVIEW & UPDATES )
WASHINGTON — An explosion on a Florida
launch pad early Sept. 1 destroyed a SpaceX Falcon 9 rocket and its payload,
the Amos-6 communications satellite, being prepared for an upcoming launch
there.
Authorities said the explosion occurred at
approximately 9:07 a.m. Eastern at Space Launch Complex 40 at Cape Canaveral
Air Force Station, where SpaceX was preparing to conduct a static fire test of
the Falcon 9 in advance of a scheduled Sept. 3 launch. The test, which
entails briefly firing the rocket’s first stage, is a routine pre-launch
procedure for Falcon 9 missions.
SpaceX Chief Executive Elon Musk, in a tweet
four hours after the incident, said the explosion originated around the Falcon
9’s the upper stage liquid oxygen tank while it was being loaded in the minutes
before the scheduled static fire test. He said there was no information yet on
the cause of the explosion.
SpaceX
confirmed both the Falcon 9 and its Amos-6 payload were lost in the explosion,
but that there were no injuries in the explosion. “SpaceX can confirm that in
preparation for today’s static fire, there was an anomaly on the pad resulting
in the loss of the vehicle and its payload. Per standard procedure, the pad was
clear and there were no injuries,” SpaceX said via Twitter.
The loss of Amos-6 is a major, untimely
setback for its owner, Spacecom. With a pending sale of the Israeli satellite fleet operator contingent on the
successful launch of Amos-6, shares of Spacecom’s stock fell
sharply as the first reports of an explosion began rolling in.
A major user of Amos-6 was to be Facebook,
the social networking company that purchased the Ka-band capacity of the
satellite to provide Internet access to underserved regions of sub-Saharan
Africa. “We are disappointed by the loss but remain committed to our mission of
connecting people to the Internet around the world,” a Facebook spokesperson
said Sept. 1.
The failure is also a setback to several other companies preparing to launch payloads on the
Falcon 9, most notably Iridium. It had planned to launch its first
ten next-generation satellites on a Falcon 9 from Vandenberg Air Force Base in
California later in September, a launch likely to be delayed by at least
several weeks while this incident is investigated.
SpaceX, which has launched eight times this
year, faced a crowded end-of-the-year manifest. Nine customers were still expecting
to launch on Falcon 9 before January; all but three of those missions were to
lift off from Florida. SpaceX also hoped to squeeze in the first flight of its
new Falcon Heavy rocket.
The failure could also have repercussions in
civil and military space. SpaceX provides commercial cargo services for NASA
and is developing a commercial crew system, while it is also competing for
national security launches once in the exclusive domain of United Launch
Alliance.
“Today’s incident reminds us all that space flight
is an inherently risky business,” said Sen. Bill Nelson (D-Fla.), ranking
member of the Senate Commerce Committee, in a statement issued shortly after
the explosion. “As we continue to push the frontiers of space, there will be
both triumphs and setbacks. But at the end of the day, I’m confident that our
commercial space industry will be very successful.”
Updates as on Jan 2, 2017
January 2, 2017, 9:00am EST
Over the past four months, officials at the Federal Aviation
Administration (FAA), the U.S. Air Force (USAF), the National
Aeronautics and Space Administration (NASA), the National Transportation
Safety Board (NTSB), along with several industry experts, have
collaborated with SpaceX on a rigorous investigation to determine the
cause of the anomaly that occurred September 1 at Space Launch Complex
40 (SLC-40) at Cape Canaveral Air Force Station in Florida. This
investigation team was established according to SpaceX's accident
investigation plan as approved by the FAA. As the primary federal
licensing body, the FAA provided oversight and coordination for the
investigation.
Investigators scoured more than 3,000 channels of video and telemetry
data covering a very brief timeline of events – there were just 93
milliseconds from the first sign of anomalous data to the loss of the
second stage, followed by loss of the vehicle. Because the failure
occurred on the ground, investigators were also able to review umbilical
data, ground-based video, and physical debris. To validate
investigation analysis and findings, SpaceX conducted a wide range of
tests at its facilities in Hawthorne, California and McGregor, Texas.
The accident investigation team worked systematically through an
extensive fault tree analysis and concluded that one of the three
composite overwrapped pressure vessels (COPVs) inside the second stage
liquid oxygen (LOX) tank failed. Specifically, the investigation team
concluded the failure was likely due to the accumulation of oxygen
between the COPV liner and overwrap in a void or a buckle in the liner,
leading to ignition and the subsequent failure of the COPV.
Each stage of Falcon 9 uses COPVs to store cold helium which is used to
maintain tank pressure, and each COPV consists of an aluminum inner
liner with a carbon overwrap. The recovered COPVs showed buckles in
their liners. Although buckles were not shown to burst a COPV on their
own, investigators concluded that super chilled LOX can pool in these
buckles under the overwrap. When pressurized, oxygen pooled in this
buckle can become trapped; in turn, breaking fibers or friction can
ignite the oxygen in the overwrap, causing the COPV to fail. In
addition, investigators determined that the loading temperature of the
helium was cold enough to create solid oxygen (SOX), which exacerbates
the possibility of oxygen becoming trapped as well as the likelihood of
friction ignition.
The investigation team identified several credible causes for the COPV
failure, all of which involve accumulation of super chilled LOX or SOX
in buckles under the overwrap. The corrective actions address all
credible causes and focus on changes which avoid the conditions that led
to these credible causes. In the short term, this entails changing the
COPV configuration to allow warmer temperature helium to be loaded, as
well as returning helium loading operations to a prior flight proven
configuration based on operations used in over 700 successful COPV
loads. In the long term, SpaceX will implement design changes to the
COPVs to prevent buckles altogether, which will allow for faster loading
operations.
SpaceX is targeting return to flight from Vandenberg's Space Launch
Complex 4E (SLC-4E) with the Iridium NEXT launch on January 8. SpaceX
greatly appreciates the support of our customers and partners throughout
this process, and we look forward to fulfilling our manifest in 2017
and beyond.
December 7, 10:30am EDT
We are finalizing the
investigation into our September 1 anomaly and are working to complete
the final steps necessary to safely and reliably return to flight, now
in early January with the launch of Iridium-1. This allows for
additional time to close-out vehicle preparations and complete extended
testing to help ensure the highest possible level of mission assurance
prior to launch.
October 28, 4:00pm EDT
The
Accident Investigation Team continues to make progress in examining the
anomaly on September 1 that led to the loss of a Falcon 9 and its
payload at Launch Complex 40 (LC-40), Cape Canaveral Air Force Station,
Florida.
Since the incident,
investigators from SpaceX, the FAA, NASA, the US Air Force and industry
experts have been working methodically through an extensive fault tree
to investigate all plausible causes. As part of this, we have conducted
tests at our facility in McGregor, Texas, attempting to replicate as
closely as possible the conditions that may have led to the mishap.
The
investigation team has made significant progress on the fault tree.
Previously, we announced the investigation was focusing on a breach in
the cryogenic helium system of the second stage liquid oxygen tank. The
root cause of the breach has not yet been confirmed, but attention has
continued to narrow to one of the three composite overwrapped pressure
vessels (COPVs) inside the LOX tank. Through extensive testing in Texas,
SpaceX has shown that it can re-create a COPV failure entirely through
helium loading conditions. These conditions are mainly affected by the
temperature and pressure of the helium being loaded.
SpaceX’s
efforts are now focused on two areas – finding the exact root cause,
and developing improved helium loading conditions that allow SpaceX to
reliably load Falcon 9. With the advanced state of the investigation, we
also plan to resume stage testing in Texas in the coming days, while
continuing to focus on completion of the investigation. This is an
important milestone on the path to returning to flight.
Pending
the results of the investigation, we continue to work towards returning
to flight before the end of the year. Our launch sites at Kennedy Space
Center, Florida, and Vandenberg Air Force Base, California, remain on
track to be operational in this timeframe.
September 23, 1:00pm EDT
Three
weeks ago, SpaceX experienced an anomaly at our Launch Complex 40
(LC-40) at Cape Canaveral Air Force Station. This resulted in the loss
of one of our Falcon 9 rockets and its payload.
The Accident
Investigation Team (AIT), composed of SpaceX, the FAA, NASA, the U.S.
Air Force, and industry experts, are currently scouring through
approximately 3,000 channels of engineering data along with video, audio
and imagery. The timeline of the event is extremely short – from first
signs of an anomaly to loss of data is about 93 milliseconds or less
than 1/10th of a second. The majority of debris from the incident has
been recovered, photographed, labeled and catalogued, and is now in a
hangar for inspection and use during the investigation.
At this
stage of the investigation, preliminary review of the data and debris
suggests that a large breach in the cryogenic helium system of the
second stage liquid oxygen tank took place. [Updated 09/24: At this
time, the cause of the potential breach remains unknown.] All plausible
causes are being tracked in an extensive fault tree and carefully
investigated. Through the fault tree and data review process, we have
exonerated any connection with last year’s CRS-7 mishap.
The teams
have continued inspections of LC-40 and the surrounding facilities.
While substantial areas of the pad systems were affected, the Falcon
Support Building adjacent to the pad was unaffected, and per standard
procedure was unoccupied at the time of the anomaly. The new liquid
oxygen farm – e.g. the tanks and plumbing that hold our super-chilled
liquid oxygen – was unaffected and remains in good working order. The
RP-1 (kerosene) fuel farm was also largely unaffected. The pad’s control
systems are also in relatively good condition.
SpaceX’s other
facilities, from the Payload Processing Facility at the Cape, to the pad
and hangar at LC-39A, are located several miles from LC-40 and were
unaffected as well. Work continues at Pad 39A in preparation for
bringing it online in November. The teams have been in contact with our
Cape Canaveral and Kennedy Space Center partners and neighbors and have
found no evidence of debris leaving the immediate area of LC-40.
At
SpaceX headquarters in Hawthorne, CA, our manufacturing and production
is continuing in a methodical manner, with teams continuing to build
engines, tanks, and other systems as they are exonerated from the
investigation. We will work to resume our manifest as quickly as
responsible once the cause of the anomaly has been identified by the
Accident Investigation Team. Pending the results of the investigation,
we anticipate returning to flight as early as the November timeframe.
Other
efforts, including the Commercial Crew Program with NASA, are
continuing to progress. Getting back to flight safely and reliably is
our top priority, and the data gathered from the present investigation
will result in an even safer and more reliable vehicle for our customers
and partners.
September 2, 6:45pm EDT
SpaceX
has begun the careful and deliberate process of understanding the
causes and fixes for yesterday's incident. We will continue to provide
regular updates on our progress and findings, to the fullest extent we
can share publicly.
We deeply regret the loss of AMOS-6, and
safely and reliably returning to flight to meet the demands of our
customers is our chief priority. SpaceX's business is robust, with
approximately 70 missions on our manifest worth over $10 billion. In
the aftermath of yesterday's events, we are grateful for the continued
support and unwavering confidence that our commercial customers as well
as NASA and the United States Air Force have placed in us.
Overview of the incident:
-
Yesterday, at SpaceX's Launch Complex 40 at Cape Canaveral Air Force
Station, an anomaly took place about eight minutes in advance of a
scheduled test firing of a Falcon 9 rocket.
- The anomaly on the pad resulted in the loss of the vehicle.
- This was part of a standard pre-launch static fire to demonstrate the health of the vehicle prior to an eventual launch.
- At
the time of the loss, the launch vehicle was vertical and in the
process of being fueled for the test. At this time, the data indicates
the anomaly originated around the upper stage liquid oxygen tank. Per
standard operating procedure, all personnel were clear of the pad.
There were no injuries.
To identify the root cause of the
anomaly, SpaceX began its investigation immediately after the loss,
consistent with accident investigation plans prepared for such a
contingency. These plans include the preservation of all possible
evidence and the assembly of an Accident Investigation Team, with
oversight by the Federal Aviation Administration and participation by
NASA, the United States Air Force and other industry experts. We are
currently in the early process of reviewing approximately 3000 channels
of telemetry and video data covering a time period of just 35-55
milliseconds.
As for the Launch Pad itself, our teams are now
investigating the status of SLC-40. The pad clearly incurred damage,
but the scope has yet to be fully determined. We will share more data
as it becomes available. SpaceX currently operates 3 launch pads – 2 in
Florida and 1 in California at Vandenberg Air Force Base. SpaceX's
other launch sites were not affected by yesterday's events. Space
Launch Complex 4E at Vandenberg Air Force Base is in the final stages of
an operational upgrade and Launch Complex 39A at Kennedy Space Center
remains on schedule to be operational in November. Both pads are
capable of supporting Falcon 9 and Falcon Heavy launches. We are
confident the two launch pads can support our return to flight and
fulfill our upcoming manifest needs.
Again, our number one
priority is to safely and reliably return to flight for our customers,
as well as to take all the necessary steps to ensure the highest
possible levels of safety for future crewed missions with the Falcon 9.
We will carefully and thoroughly investigate and address this issue.
September 2, 9:00am EDT
Statement from SpaceX President and COO, Gwynne Shotwell:
“We
deeply regret the loss of Amos-6. Our number one priority is to safely
and reliably return to flight for our customers, and we will carefully
investigate and address this issue. We are grateful for the continued
support that our customers have expressed to us.”
September 1, 1:28pm EDT
At
approximately 9:07 am ET, during a standard pre-launch static fire test
for the AMOS-6 mission, there was an anomaly at SpaceX’s Cape Canaveral
Space Launch Complex 40 resulting in loss of the vehicle.
The
anomaly originated around the upper stage oxygen tank and occurred
during propellant loading of the vehicle. Per standard operating
procedure, all personnel were clear of the pad and there were no
injuries.
We are continuing to review the data to identify the root cause. Additional updates will be provided as they become available.
September 1, 10:22am EDT
SpaceX
can confirm that in preparation for today's static fire, there was an
anomaly on the pad resulting in the loss of the vehicle and its payload.
Per standard procedure, the pad was clear and there were no injuries
Space X Falcon Launch:
GRAPEVINE, Texas — The U.S. Federal Aviation Administration (FAA) has issued a launch license to SpaceX for the upcoming return to flight of its Falcon 9, although its planned launch has been delayed by at least one day.
FAA spokesman Hank Price said in a Jan. 6 statement that the agency had reviewed and accepted SpaceX’s investigation into its Sept. 1 pad explosion.
That accident destroyed a Falcon 9 rocket being prepared for a static
fire test in advance of the launch of the Amos-6 communications
satellite. With the report accepted, FAA then issued the license
required for the launch of the first batch of 10 Iridium Next
satellites.
"The FAA accepted the investigation report on the Amos-6 mishap and has
closed the investigation," Price said. "SpaceX applied for a license to
launch the Iridium Next satellites from Vandenberg Air Force Base. The
FAA has granted a license for that purpose
SpaceX announced Jan. 2 that it had completed the investigation into
the pad explosion, blaming the accident on composite overwrapped
pressure vessels used to store helium in the liquid oxygen tank of the
rocket’s upper stage. The aluminum liner of pressure vessel buckled and
liquid oxygen pooled between the liner and carbon overwrap, which led to
the failure of the pressure vessel.
At the time of the announcement, SpaceX said it had submitted its
report to the FAA, but that the FAA was still reviewing it. Price said
Jan. 5 that the FAA was still reviewing the report and continuing to
work with the company.
The license, valid until January 2019, covers all seven planned Falcon 9
launches of Iridium spacecraft from Vandenberg Air Force Base in
California. The license also authorizes SpaceX to attempt landings of
the rocket’s first stage on a “droneship” in the Pacific Ocean downrange
from the launch site.
The issuance of the license comes a day after SpaceX conduced a
static-fire test of the Falcon 9 on the pad at Vandenberg. “Hold-down
firing of @SpaceX Falcon 9 at Vandenberg Air Force completed. All
systems are go for launch next week,” SpaceX Chief Executive Elon Musk
tweeted Jan. 5.
When it released the results of its investigation into the September
pad explosion Jan. 2, SpaceX stated that it was planning to carry out
the launch Jan. 8. An Iridium spokesman said Jan. 6 that the launch has
been delayed one day to Jan. 9, at 1:22 p.m. Eastern.
Weather, however, is not promising for a launch on either Jan. 9 or the
next several days, with forecasts projecting cloudy skies and
intermittent rain.
WASHINGTON
— An explosion on a Florida launch pad early Sept. 1 destroyed a SpaceX
Falcon 9 rocket and its payload, the Amos-6 communications satellite,
being prepared for an upcoming launch there.
Authorities said the explosion occurred at approximately 9:07 a.m.
Eastern at Space Launch Complex 40 at Cape Canaveral Air Force Station,
where SpaceX was preparing to conduct a static fire test of the Falcon
9 in advance of a scheduled Sept. 3 launch. The test, which entails
briefly firing the rocket’s first stage, is a routine pre-launch
procedure for Falcon 9 missions.
SpaceX Chief Executive Elon Musk, in a tweet four hours after the
incident, said the explosion originated around the Falcon 9’s the upper
stage liquid oxygen tank while it was being loaded in the minutes before
the scheduled static fire test. He said there was no information yet on
the cause of the explosion.
- See more at: http://spacenews.com/developing-explosion-rocks-spacex-falcon-9-pad-at-cape-canaveral/#sthash.yCEgK2TP.dpuf
WASHINGTON
— An explosion on a Florida launch pad early Sept. 1 destroyed a SpaceX
Falcon 9 rocket and its payload, the Amos-6 communications satellite,
being prepared for an upcoming launch there.
Authorities said the explosion occurred at approximately 9:07 a.m.
Eastern at Space Launch Complex 40 at Cape Canaveral Air Force Station,
where SpaceX was preparing to conduct a static fire test of the Falcon
9 in advance of a scheduled Sept. 3 launch. The test, which entails
briefly firing the rocket’s first stage, is a routine pre-launch
procedure for Falcon 9 missions.
SpaceX Chief Executive Elon Musk, in a tweet four hours after the
incident, said the explosion originated around the Falcon 9’s the upper
stage liquid oxygen tank while it was being loaded in the minutes before
the scheduled static fire test. He said there was no information yet on
the cause of the explosion.
- See more at: http://spacenews.com/developing-explosion-rocks-spacex-falcon-9-pad-at-cape-canaveral/#sthash.yCEgK2TP.dpuf
Posts
