Category: Behind The Black

Perseverance experiment generates new record of breathable oxygen on Mars

8:59 am

MOXIE, an experiment on the rover Perseverance to see if breathable oxygen could be generated from the carbon dioxide in the Martian atmosphere, has set a new production record.

The atmosphere around Jezero Crater, the present location of Perseverance, reached peak density for the year mid (Earth) summer. This presented the perfect opportunity for the MOXIE science team to step on the accelerator and test how fast we could safely produce oxygen. This test occurred on Sol 534 (Aug. 22, 2022) and produced a peak of 10.44 grams per hour of oxygen. This represented a new record for Martian oxygen production! The team was thrilled to surpass our design goal of 6 grams per hour by over 4.4 grams. The peak rate was held for 1 minute of the 70 minutes oxygen was produced during the run.

MOXIE’s next opportunity to operate came recently. Despite the decreasing density of the Mars atmosphere, on Sol 630 (Nov. 28, 2022) MOXIE managed to break the record again and produce nearly 10.56 grams per hour at peak. Oxygen production was sustained for a 9.79 grams per hour for nearly 40 minutes.

These numbers may seem small, but MOXIE production runs are limited by available rover power. In addition, MOXIE technology was miniaturized to accommodate the limited space available on the rover. A MOXIE for a human Mars mission would produce oxygen nearly 200 times faster and work continuously for well over a year.

Ten grams per hour is about half what one person needs to breathe, and is a little less than a large tree produces. Moreover, MOXIE had earlier conducted seven other runs, producing about six grams of oxygen per hour during each.

Based on these tests, MOXIE has unequivocally proven that future human explorers will not need to bring much oxygen with them, and will in fact have essentially an unlimited supply, on hand from the red planet itself. More important, MOXIE has also proven that the technology to obtain this oxygen already exists.

All we need to do is plant enough MOXIE trees on Mars.

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December 22, 2022 Quick space links

3:46 pm

Courtesy of Jay, BtB’s stringer.

  • It appears China is beginning to stretch out its long term space goals

    • The tweet notes new delayed target dates for China’s Mars sample return mission, asteroid mission, and exoplanet telescope, to name just three. I see this as typical of a government-run program. In the end the focus of such government programs always shifts from their stated goals to simply providing government jobs on Earth. Thus, delays become a feature, not a bug.

 

 

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Today’s blacklisted American: The FBI’s purge of conservatives forces one agent to sue

12:48 pm

Chris Wray, head of the FBI, the Democratic Party's Gestapo

They’re coming for you next: The effort of the FBI’s management, led by FBI director Christopher Wray, to purge all conservative agents from the agency by using false charges of treason in connection to the January 6, 2021 protests has forced one agent to sue.

Judicial Watch announced today that it filed a lawsuit on behalf of FBI analyst Marcus Allen in the U.S. District Court for the District of South Carolina against FBI Director Christopher Wray for violating Allen’s constitutional rights by falsely accusing him of holding “conspiratorial views,” stripping his security clearance, and suspending him from duty without pay. The FBI revoked his security clearance because apparently the FBI believes that any views contrary to its own regarding what occurred on January 6 constitutes disloyalty to the United States.

You can read the full lawsuit complaint here [pdf].

The FBI suspended Allen in January 2022, claiming in a one page letter [pdf] that:
» Read more

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Bursting lava bubbles on Mars

10:58 am

Burst lava bubbles on Mars
Click for full image.

Cool image time! The photo to the right, rotated, cropped, reduced, and sharpened to post here, was taken on September 4, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

I really have no idea what caused these distorted cones. My intuition (a dangerous thing to rely on when it comes to science) suggests these are volcanic in nature. Imagine hot lava with gas bubbling up from below. Periodically a gas bubble will burst on the surface releasing the gas. Depending on temperature, that bursting bubble could harden in place.

The overview map below provides some support for my intuition, but it also suggests this first hypothesis could be completely wrong, something that does not surprise me in the least.
» Read more

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Australian rocket startup Gilmour preps for first test launch

9:23 am

Gilmour Space Technologies, a new Australian rocket startup, is now targeting April for the first test launch of its three-stage Eris rocket from a launchpad on the northeast coast of Australia.

Standing 25 m (82 ft) high, [Eris] has a first-stage diameter of 2 m (6.6 ft), and a second-stage diameter of 1.5 m (4.9 ft), and it’s designed to take a payload mass up to 305 kg (672 lb) up as high as 500 km (311 miles) for delivery to sun-synchronous or equatorial orbits. The Eris will be powered by five of Gilmour’s own Sirius rocket engines. This is a hybrid engine, meaning it uses a liquid oxidizer but a solid fuel. In a final bench test to destruction, it generated 115 kilonewtons (25,850 lbf) and burned for more than 90 seconds before exploding.

More information here.

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Update on upcoming first launch of Relativity’s Terran-1 rocket

9:13 am

Link here. Relativity has been doing longer and longer static fire tests on the launchpad, building to what could be the first every full duration static fire test of a rocket, on the launchpad.

A pair of spin-start tests on Terran 1’s first stage was completed on July 18 and 21 of this year. This was followed by hot fire tests, which not only started the nine Aeon 1 engines but allowed them to reach full thrust before shutdown. The first of these hot fire tests occurred on July 27 and lasted six seconds.

Once complete engine ignition was achieved, the next goal was to work toward firing the first stage for the full duration that will be needed during the flight from liftoff to stage separation. This type of “mission duty cycle” test is usually done on dedicated test stands rather than on the launch pad, but the test stand being used in place of the launch mount at SLC-16 enabled Relativity to streamline operations and complete long-duration firings on the launch pad. “To our knowledge, no other company has ever actually done a full flight duration test on the actual launch mount, or launch pad, at Cape Canaveral,” said Relativity CEO Tim Ellis, in an August interview with NASASpaceflight.

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Once this test is completed, the rocket will be rolled back to its assembly building for check-outs, and if all is well will then be returned to the launchpad for its actual launch. No date has been set for that launch, but if it occurs before SpaceX’s Starship orbital launch, it will be the first methane-fueled rocket to reach orbit.

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India buying land for new spaceport on India’s southern tip

9:06 am

Kulasekarapattinam

The Indian government has now acquired about 80% of the land it needs for new spaceport on that country’s southern tip.

The new spaceport will be built in Tamil Nadu’s southern region. The new spaceport at Kulasekarapattinam will have some advantages over India’s current and only spaceport at Sriharikota.

Rockets launching into polar orbit from Sriharikota, Andhra Pradesh, must perform a turn manoeuvre to avoid flying over Sri Lanka. This necessitates the use of fuel and reduces the mass that can be carried into orbit. While this has little effect on large rockets, it has a negative impact on the capacity of small rockets such as the SSLV (Small Satellite Launch Vehicle) and those built by Indian start-ups.

A launch from Kulasekarapattinam will allow for a direct flight path to the polar regions (without having to fly over and around Sri Lanka), saving fuel and payload capacity.

Sriharikota’s location is much farther north, beyond the top of the map to the right. It appears this new spaceport is aimed at attracting new private smallsat rocket companies.

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Perseverance deposits first core sample for pickup later

8:57 am

Perseverance's location December 21, 2022
Click for interactive map.

The Mars Perseverance rover has now deposited its first core sample on the floor of Jezero Crater for pickup later by a future Mars helicopter for eventual return to Earth.

A titanium tube containing a rock sample is resting on the Red Planet’s surface after being placed there on Dec. 21 by NASA’s Perseverance Mars rover. Over the next two months, the rover will deposit a total of 10 tubes at the location, called “Three Forks,” building humanity’s first sample depot on another planet. The depot marks a historic early step in the Mars Sample Return campaign.

The blue dot on the map to the right shows this location. The green dot shows Ingenuity’s present position. The red dotted line the rover’s future travel route.

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December 21, 2022 Quick space links

3:17 pm

Courtesy of BtB’s stringer Jay.

 

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