Connect with us

News

SpaceX dropped a Crew Dragon mockup to save a helicopter and its passengers

SpaceX suffered a test hardware-related anomaly during its most recent Crew Dragon parachute trial. (SpaceX)

Published

on

SpaceX says it encountered an issue that forced it to drop a Crew Dragon spacecraft mockup during parachute testing — not a failure of the vehicle or its parachutes, to be clear, but still a problem nonetheless.

This is now the second significant hurdle SpaceX’s Crew Dragon astronaut spacecraft has faced in the last few days, following the revelation that NASA will not permit the company to launch astronauts until it completes an investigation into an in-flight rocket engine failure during its March 18th Starlink launch. There is likely no technical corollary for the new Falcon 9 rockets that will launch NASA astronauts, but existing Commercial Crew Program (CCP) contract rules still require SpaceX’s internal investigation be completed before it can proceed. With lives on the line, caution – within reason – is unequivocally preferable to the alternative.

Thankfully, SpaceX’s parachute test article anomaly should have a much smaller impact on Crew Dragon’s astronaut launch debut schedule, but it’s unlikely to have zero impact.

“During a planned parachute drop test [on Tuesday], the test article suspended underneath the helicopter became unstable. Out of an abundance of caution and to keep the helicopter crew safe, the pilot pulled the emergency release. As the helicopter was not yet at target conditions, the test article was not armed, and as such, the parachute system did not initiate the parachute deployment sequence. While the test article was lost, this was not a failure of the parachute system and most importantly no one was injured. NASA and SpaceX are working together to determine the testing plan going forward in advance of Crew Dragon’s second demonstration mission.”

SpaceX — March 24th, 2020

On March 24th, SpaceX says it was preparing for one of the last system-level Crew Dragon parachute tests planned before the spacecraft can be declared ready for human spaceflight. These final tests are reportedly focused on corner cases, referring to unusual but not impossible scenarios the spacecraft might encounter during operational astronaut landing attempts. Those likely include parachute deployment scenarios that are far more stressful than a nominal reentry, descent, and landing would allow.

Regardless, things did not go as planned during Tuesday’s test attempt. SpaceX primarily uses cargo planes, helicopters, and large balloons to carry its Crew Dragon test articles (not actual functional spacecraft) to the altitudes and speeds needed to achieve certain test conditions. On March 24th, SpaceX was using a helicopter – either a civilian Blackhawk or a much larger Skycrane.

Advertisement
-
SpaceX technicians often use an S-64 Skycrane helicopter to drop high-fidelity Crew Dragon parachute test articles. (SpaceX)

For unknown reasons, the helicopter carrying the Crew Dragon test article on March 24th began to experience “instability”, likely referring to some sort of resonance (wobble, sway, oscillation, etc). Out of an abundance of caution, the pilot – likely highly trained – decided the instability was becoming an unacceptable risk and chose to drop the cargo load (a Crew Dragon mockup). Unsurprisingly, the parachute test article was not ready to drop and plummeted to the Earth without any kind of parachute deployment, likely pancaking on the desert floor shortly thereafter.

Again, it needs to be noted – as SpaceX did above – that the loss of the Crew Dragon parachute test article was entirely unrelated to the performance of the spacecraft or the parachutes it was testing. The mockup destroyed in the incident is essentially just a boilerplate mass simulator shaped like a Crew Dragon capsule to achieve more aerodynamically accurate test results. As such, it’s far simpler and cheaper than an actual Dragon spacecraft and shouldn’t take long at all to replace if SpaceX doesn’t already have a second similar mockup ready to go.

Crew Dragon successfully returned from its first orbital mission and performed a perfect parachute deployment and splashdown sequence on March 8th, 2019. (NASA)

Thankfully, that means that the loss of the test article should have next to no serious impact on Crew Dragon’s inaugural astronaut launch schedule. Planned no earlier than (NET) mid-to-late May according to NASA’s latest official statement, SpaceX and the space agency still have at least a month and a half to work through a final parachute test campaign, complete an investigation into Starlink L6’s Falcon booster engine failure, and finish several trees worth of paperwork and reviews. Delays remain likely but they shouldn’t be more than a few weeks, barring any future surprises.

Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

Advertisement
Comments

Elon Musk

Tesla’s Roadster appearance at SpaceX has merger watchers talking

Tesla’s next generation Roadster was spotted at SpaceX’s Hawthorne headquarters, two weeks after its unveiling.

Published

on

By

The Roadster’s rear wing, one of the aerodynamic elements Tesla pairs with a fan-based downforce system. (Image: Tesla)

Tesla’s next generation Roadster turned up at SpaceX’s headquarters in Hawthorne, California on Wednesday, less than two weeks after the car flew off a ramp at its unveiling in Texas.

Photos shared on X by SpaceX Engineer (@DeannaRiceSPCX) show the new Roadster parked outdoors beside the famed Falcon 9 that stands outside company headquarters at the corner of Crenshaw Boulevard and Jack Northrop Avenue. Rocket B1019 was the first orbital-class booster ever to land after a launch on December 21, 2015 after it sent 11 Orbcomm satellites to orbit and then flew back to Landing Zone 1 at Cape Canaveral, which would be the first landing in what became SpaceX’s reusable rocket program. SpaceX chose not to fly it again. After a test fire in Florida, the booster was shipped to Hawthorne and raised upright as a permanent monument in August 2016, as Teslarati reported at the time. Putting the Roadster, which flies on SpaceX cold gas thrusters, next to the rocket that started SpaceX’s landings is symbolic in itself.

The Thrust and Rocket versions of the Roadster use cold gas thrusters fed by composite overwrapped pressure vessels, the same type of tank SpaceX flies on Falcon 9, and Elon Musk described the car as the work of Tesla and SpaceX engineers working together. Tesla lists 0 to 60 mph in under 0.9 seconds for Thrust and under 0.59 seconds for Rocket, while the base Performance model relies on a fan and ground sealing system for grip, as Teslarati detailed in its breakdown of the three Roadster configurations.

Tesla has kept the car in the spotlight since the October 15 event near Waco. Last week, the company posted a video of the Roadster’s fighter jet inspired cockpit, including a Track Mode screen with a “Thruster · 5,500 PSI” readout, which we covered in our look at the Roadster’s center display. Musk also said owners will be able to ask the car to perform the stunts autonomously, and promised a looping track at Tesla’s Texas headquarters.

The visit comes as special committees at Tesla and SpaceX weigh a possible merger, a step Musk confirmed on SpaceX’s third quarter earnings call. The Roadster, built on SpaceX hardware, has become one of the clearest examples of the two companies already building products together.

Musk said at the unveiling that Roadster production will begin in 2028. Reservations are open with a $50,000 payment, Thrust is listed as a limited release and Rocket is invite only. Tesla says the car is not approved for public road use.

Continue Reading

News

Verizon, AT&T and T-Mobile are trying to shut Starlink out before FCC vote

AT&T, Verizon and T-Mobile want 290 MHz cut from an FCC satellite plan before Thursday.

Published

on

By

Starlink D2D direct to device vs Verizon, AT&T (Concept render by Grok)

AT&T, Verizon and T-Mobile are asking the Federal Communications Commission to pull nearly 300 MHz of spectrum out of a proposal that would let satellite companies like SpaceX offer cell service directly to ordinary phones. The request lands one day before the agency votes on it.

The FCC will vote Thursday, October 29, on a notice of proposed rulemaking that would make an additional 482 MHz available for direct to device service, expanding the number of eligible bands from five to 13, according to the FCC fact sheet. It would also scrap the rule requiring a satellite operator to lease spectrum from carriers, replacing it with a certification that the operator has coexistence agreements in place or holds the terrestrial license itself.

That second path matters for SpaceX. As Teslarati reported earlier this month, SpaceX agreed to buy Grain Management’s nationwide 800 MHz portfolio to turn Starlink Mobile into a full US carrier, adding to the spectrum it already bought from EchoStar.

The carriers want two bands removed, 2.5 GHz and 3.45 GHz, which make up 290 MHz of the 482 MHz on the table. Through industry group CTIA, they argued that about 300 million users depend on those bands and that satellite operations in them are not technically feasible. T-Mobile, which calls 2.5 GHz the foundation of its Ultra Capacity 5G network, said in its own filing that satellite interference could wipe out up to 96% of a cell site’s uplink coverage area and cut uplink speeds by 88% to 99%.

Executives from all three carriers met with FCC staff on October 20, and T-Mobile CEO Srini Gopalan met separately with FCC Chairman Brendan Carr. T-Mobile’s role stands out because it is still SpaceX’s US launch partner for Starlink Mobile. The three carriers have also teamed up on their own satellite joint venture to pool spectrum, a move widely seen as a response to Starlink.

Advertisement
-

SpaceX is asking for the opposite. In an October 23 filing after meetings with FCC staff and commissioners’ offices, the company asked regulators to add the 902 to 928 MHz band to the proposal. “Doing so now saves time later,” SpaceX wrote. The company also asked the FCC to modernize interference rules and align satellite deployment requirements with those for terrestrial cell networks, saying the goal is to let satellite and ground networks work together so Americans stay connected wherever they are.

The carriers have not been shy about how they view SpaceX as a competitor. On Verizon’s third quarter earnings call Monday, its chief executive said Starlink Mobile “just can’t compete with a terrestrial network” and estimated SpaceX would need four to six years and $300 billion to $500 billion to build a full US carrier network.

Thursday’s vote will not settle which bands survive. Adopting the notice opens a public comment period, with final rules to come later in the proceeding. The FCC already considered and rejected 2.5 GHz for satellite coverage once, in 2024. SpaceX also is not the only satellite player watching: the FCC approved Amazon’s $11.6 billion acquisition of Globalstar on October 27, giving its planned direct to device fleet its own mobile satellite spectrum.

Continue Reading

News

Tesla Semi catches fire in California: what we know

Published

on

Credit: KTVU

A Tesla Semi caught fire in Hayward, California, which caused both directions of traffic to shut down for hours before being completely reopened early on Wednesday, the California Highway Patrol said.

The fire occurred just after 5:30 local time in Hayward on Tuesday, as the Semi caught fire in the southbound lanes of I-880 before CHP officials made the decision to shut down both lanes of traffic due to potential risks from hazardous chemical smoke.

There were no injuries reported.

The cause of the fire is currently unknown, as neither Tesla nor the CHP have not determined a cause.

However, some images taken before the Semi was completely destroyed by the fire seem to indicate this might have been an older unit, as it appears to be one of the designs that Tesla shipped as part of its pilot program, before revising it and starting mass production just a month ago.

At the time of publication, CHP had not returned our request for a comment for additional details, including the Semi involved and any potential collaboration on an investigation between the CHP and Tesla. We will update this story when we hear back from them.

The southbound lanes were reopened at 3:30 a.m. on Wednesday, with the northbound lanes opening last night a few hours after the fire began. The CHP did state that the lithium batteries were “incredibly difficult to extinguish,” according to NBC Bay Area.

The truck’s driver said that the Semi caught fire, but he did not have an explanation.

An estimated 5,000 to 7,000 semi-truck and large commercial vehicle fires occur on U.S. roadways every year.

Continue Reading