Connect with us
SpaceX's 'DragonFly' prototype was briefly used to test Dragon 2's propulsive landing capabilities before the program was cancelled. Most of the technology remains a part of Crew Dragon, however... (SpaceX) SpaceX's 'DragonFly' prototype was briefly used to test Dragon 2's propulsive landing capabilities before the program was cancelled. Most of the technology remains a part of Crew Dragon, however... (SpaceX)

SpaceX

SpaceX’s Crew Dragon could land with abort thrusters in emergencies, says Musk

SpaceX's 'DragonFly' prototype was briefly used to test Dragon 2's propulsive landing capabilities before the program was cancelled. Most of the technology remains a part of Crew Dragon, however... (SpaceX)

Published

6 years ago

on

SpaceX CEO Elon Musk says that Crew Dragon – originally designed to propulsively land like Falcon 9 – is still technically able to do so, a capability that could give the already uniquely redundant spacecraft yet another level of safety during Earth reentry and landing.

While Musk noted that adding or enabling that capability during missions with astronauts would be entirely dependent upon NASA’s approval, the idea would be to trigger Crew Dragon’s SuperDraco abort thrusters in the event of a partial or total failure of the spacecraft’s parachutes. Although Crew Dragon is already capable of keeping its passengers safe if one of its four parachutes fails to properly deploy, the loss of any additional drag would likely create a situation where the force of impact on the ocean surface could severely injure or kill astronauts, much like a car crash without airbags. To prevent this, Crew Dragon could fire its thrusters at the last second, canceling out or at least minimizing the force of impact.

If it can be done, Crew Dragon would be the only spacecraft in the world with the ability to ensure crew survival in the event of a failure involving parachute deployment, although it’s not clear if that recovery redundancy would still be available after an actual in-flight or pad abort during launch operations. Still, for a space agency so apparently fixated on and worried about ‘qualifying’ SpaceX’s Crew Dragon parachutes and a “Safety first!” culture more generally, one would expect NASA to jump on any opportunity to dramatically improve spacecraft safety with minimal additional effort.

Thanks to SpaceX’s decision to permanently integrate the SuperDraco-powered launch abort system (LAS) into the capsule itself, compared to most other solutions with ‘escape towers’ or service section-based abort systems ejected once in orbit or prior to reentry, Crew Dragon can escape from Falcon 9 at any point from the pad to orbit. Boeing’s Starliner capsule also features this capability, although its abort system is integrated into its trunk, which – like Crew Dragon – is detached before reentry, meaning that Starliner would have little to no control authority during descent and recovery aside from small maneuvering thrusters. For Starliner, the potential consequences of a parachute failure during recovery are quite a bit higher than Dragon as a result of Boeing’s decision to land the capsule on land, a process that actually necessitated the inclusion of a complex series of additional deployment events for a successful (and safe) landing.

Boeing’s Starliner spacecraft. (Boeing)

During Starliner landings, the capsule must deploy its drogue chutes and main parachutes (three instead of Crew Dragon’s four), but also has to eject the entire heat shield section and deploy airbags shortly before touchdown. If one or all parachutes failed to properly deploy, Starliner would have no recourse to protect its passengers, while a failure of heat shield deployment or airbags likely would result in significant damage to the spacecraft and potentially injure the crew. While it adds complexity, many other spacecraft – including Russia’s Soyuz capsule and Blue Origin’s New Shepard capsule – rely on actively-cushioned land recoveries, although they typically use small thrusters (usually solid rockets) instead of cushions to achieve a softer touchdown.

Still, the fact that Crew Dragon will likely approach its splashdown with several thousand kilograms of propellant still aboard and (nominally) unused SuperDraco thrusters clearly offers a major opportunity for added redundancy and safety, potentially requiring little more than a software update to enable. If possible, the opportunities stretch well beyond simply cushioning anomalous ocean splashdowns, potentially allowing for abort scenarios where Crew Dragon would be able to safely return crew to Earth even in cases where the capsule would be forced to land on the ground by using its SuperDracos to cushion what would be an otherwise dangerous crash.

According to SpaceX CEO Elon Musk, the company may actually explore – if not operationally utilize – the capabilities lent by Crew Dragon’s (also known as Dragon 2) abort thrusters, including redundant recovery and propulsive or cushioned landings at sea or on land. SpaceX is set to use refurbished and slightly modified Crew Dragons to fulfill its second Commercial Resupply Services (CRS2) contract with NASA to deliver supplies to and from the International Space Station (ISS).

Check out Teslarati’s Marketplace! We offer Tesla accessories, including for the Tesla Cybertruck and Tesla Model 3.

Related Topics:

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.

Continue Reading
Comments

News

SpaceX and Elon Musk explain potential reasons for Starship loss

Published

2 months ago

on

January 17, 2025

By

Credit: SpaceX

SpaceX and its CEO Elon Musk are starting to shed some light on the potential reasoning for the loss of Starship yesterday, which was lost after a successful launch and catch of the lower-stage booster.

Starship was lost during its ascension, and debris rained down over the Caribbean less than an hour after SpaceX lost all communication with the spacecraft.

A few hours after the launch was over, SpaceX started to shed some light after looking at preliminary data that the rocket left behind.

The company said that a fire developed in the aft section of Starship:

“Following stage separation, the Starship upper stage successfully lit all six Raptor engines and performed its ascent burn to space. Prior to the burn’s completion, telemetry was lost with the vehicle after approximately eight and a half minutes of flight. Initial data indicates a fire developed in the aft section of the ship, leading to a rapid unscheduled disassembly with debris falling into the Atlantic Ocean within the predefined hazard areas.”

Additionally, Musk said that there was some sort of oxygen or fuel leak in the cavity above the ship engine firewall.

The leak was evidently large enough to build more pressure than the vent was able to handle:

Some also seemed to recognize evidence of fires throughout the flight of Starship, which is obviously an anomaly:

There will be more information regarding the loss of Starship in the coming days and weeks, but Musk already believes that a bit of fire suppression and more volume in the cavity above the ship engine firewall could fix the issue.

“Nothing so far suggests pushing next launch past next month,” he said, so Flight 8 could happen sometime in February.

Need accessories for your Tesla? Check out the Teslarati Marketplace:

Please email me with questions and comments at joey@teslarati.com. I’d love to chat! You can also reach me on Twitter @KlenderJoey, or if you have news tips, you can email us at tips@teslarati.com.

Continue Reading

News

SpaceX completes second catch of lower stage, but loses Starship

Published

2 months ago

on

January 16, 2025

By

Credit: SpaceX

SpaceX completed its seventh launch of Starship on Thursday, accomplishing a clean liftoff and catch of the first-stage booster. However, the upper stage was lost after its ascent.

The launch took place just a few minutes after 5 p.m. on the East Coast, as the first attempts at getting Starship in the air for the seventh time were delayed by weather both last week and this week.

Conditions were favorable on Thursday as SpaceX looked to follow up a successful campaign by Blue Origin, Jeff Bezos’s company, earlier today.

SpaceX went into the seventh Starship launch with plans for a catch attempt of the first-stage booster, something it attempted and completed during the fifth test launch last year. It decided to skip a catch attempt with the sixth test flight as conditions were not aligned.

For now, SpaceX is extremely selective as to when it attempts catches.

However, it was successful during this attempt, its second completed catch:

This flight differed from previous launches as SpaceX rolled out several improvements to the rocket and the processes as it featured plans to do a Starlink deployment simulation and had various adjustments to flap placement and avionics.

These plans were disrupted by the fact that SpaceX lost all communications with Starship about ten minutes into the flight, which the aerospace company confirmed was a result of losing the spacecraft sometime during its ascent.

Although the catch was successful, the loss of the actual rocket seemed to be a huge damper on the entire event. SpaceX confirmed several minutes after the loss of communications that the rocket was destroyed and was lost.

It was its first failure since the second Starship launch in November 2023. SpaceX had no answers for why the rocket was destroyed and lost.

We will keep you updated in the coming days.

Need accessories for your Tesla? Check out the Teslarati Marketplace:

Please email me with questions and comments at joey@teslarati.com. I’d love to chat! You can also reach me on Twitter @KlenderJoey, or if you have news tips, you can email us at tips@teslarati.com.

Continue Reading

News

SpaceX confirms next Starship launch target – Here’s when it will take off

Published

2 months ago

on

January 9, 2025

By

spacex starship upper stage catch
Credit: Elon Musk | X

SpaceX has confirmed a new target date for the seventh Starship test launch after weather in Texas delayed the first scheduled date for “three or four days.”

The company is now targeting the launch for Monday, January 13, at 4 p.m. CST or 5 p.m. EST. The launch date is not set in stone as any variety of delays could impact this, but SpaceX hopes to finally take off after a delay that pushed it back from January 10.

What’s new with this Starship launch

With this being the seventh test launch of Starship, there are several things that the company will change and hope to accomplish. All of these launches are done in preparation for eventually taking flight to Mars, something that will happen next year, according to CEO Elon Musk.

First, SpaceX is rolling out a next-generation ship with “significant upgrades.” Forward flaps have been made smaller and are repositioned away from the heat shield, which will “reduce their exposure to reentry heating.”

SpaceX eyes 25 annual Starship launches starting next year

There is also a 25 percent increase in propellant volume, a new fuel feedline system for the Raptor vacuum engines, and a better-than-ever propulsion avionics module that will control the valves and reading sensors.

Avionics, as a whole, underwent a redesign and now have more capability and redundancy for missions as they become more complex.

Starlink test

SpaceX is also planning to deploy 10 Starlink simulators that are similar in size and weight to the next-generation Starlink satellites:

“While in space, Starship will deploy 10 Starlink simulators, similar in size and weight to next-generation Starlink satellites as the first exercise of a satellite deploy mission. The Starlink simulators will be on the same suborbital trajectory as Starship, with splashdown targeted in the Indian Ocean. A relight of a single Raptor engine while in space is also planned.”

Ship return and catch

There will be several experiments that have to do with returning Starship and various catch scenarios and sequences. One of which will see “a significant number of tiles be removed to stress-test vulnerable areas across the vehicle.”

The ship’s reentry profile was also intentionally designed to test the structural limits of the flaps while at the point of maximum dynamic pressure during reentry.

Currently, SpaceX did not detail whether it would attempt another catch during this test launch. These are usually game-time decisions.

Need accessories for your Tesla? Check out the Teslarati Marketplace:

Please email me with questions and comments at joey@teslarati.com. I’d love to chat! You can also reach me on Twitter @KlenderJoey, or if you have news tips, you can email us at tips@teslarati.com.

Continue Reading