Tag: engineering

News from SpaceX

10:18 pm

Capitalism in space: At the annual convention of the National Space Society, Elon Musk revealed some significant new details about his company’s future engineering and launch plans.

The first two stories are related, as it had been powered landings that SpaceX hoped to use for its Red Dragon Mars landings. Dropping powered landings, at this time, means that the first Dragon mission to Mars will likely not happen in 2020. While Musk outlined a number of good engineering reasons for this decision, to me this quote from the first article was significant:

SpaceX planned to transition from splashdowns, which is how the current cargo version of the Dragon returns to Earth, to “propulsive” landings at a pad at some point after the vehicle’s introduction. Certification issues, he said, for propulsive landings led him to cancel those plans. “It would have taken a tremendous amount of effort to qualify that for safety, particularly for crew transport,” he said.

In other words, NASA was balking at this innovation, and was putting up so many obstacles that it just wasn’t worth the company’s effort at this time. NASA is their main customer for manned launches, and NASA doesn’t like daring or creativity or innovation. The powered version of Dragon will probably have to wait for other private customers looking for a way to get into space.

The third story outlines the engineering challenges that SpaceX has been dealing with in its effort to build the Falcon Heavy, and includes this tidbit from Musk:

With all of these elements in consideration, Mr. Musk is urging caution regarding public expectation for Falcon Heavy’s first flight, saying that there is a “real good chance that the first vehicle [won’t] make it to orbit. So I want to make sure to set expectations accordingly.”

Even more telling was how Musk continued on this point, stating that he hoped Falcon Heavy makes it far enough away from LC-39A before failing so the pad will escape significant damage. “I hope it makes it far enough away from the pad that it’s not going to cause damage. I would consider that a win, honestly,” said Mr. Musk.

Thank God NASA is not involved in the development of the Falcon Heavy. SpaceX would have probably had to abandon this as well.

Meanwhile, this detailed article by Eric Berger gives us Elon Musk’s position on NASA’s contracting system. Not surprisingly, much of what Musk says mirrors what I wrote in Capitalism in Space:

During his remarks Saturday, Musk said NASA could avoid unnecessary delays and costs by transitioning to a system of competitive awards for fixed-price contracts, in which companies are only paid when they meet “milestones” such as completing a flight test or satisfying NASA about the safety performance of a vehicle. Additionally, he said, at least two entities should compete during the development process.

There’s a lot more there, and it is worth a full reading.

5 comments

Has India cut its cubesat launch prices?

9:45 pm

Capitalism in space: A complex analysis of India’s recent launch prices suggests that ISRO reduced its cubesat launch prices when it launched a record-setting 103 satellites on the most recent PSLV launch.

The key paragraph however is this:

Small-satellite owners have long complained that the PSLV, whose reliability has been established in the market, has been slow to increase its launch tempo at a time of surging cubesat production. For the moment, none of these satellite customers’ launch options provide predictable launch cadence at affordable prices.

That may be about to change as several dozen vehicles designed specifically to accommodate the growing cubesat market are preparing to enter operations. Not all are likely to succeed in establishing a foothold, but the sheer number of them is impressive:

That makes it all the more important for ISRO’s Antrix Corp., the agency’s commercial arm, to cement a reputation for launch regularity and low prices.

In other words, because a flock of new smallsat launch companies, such as Rocket Lab, Vector, and Virgin Orbit, are about to enter the market ISRO is suddenly feeling the pressure, which is why they have cut prices as well as started to up their launch rate.

Isn’t competition wonderful?

One comment

Sierra Nevada picks ULA’s Atlas 5 for first two Dream Chaser cargo flights

9:38 pm

Capitalism in space: Sierra Nevada has awarded ULA the contract for the first two cargo flights of Dream Chaser to ISS.

The announcement sets Dream Chaser’s first cargo flight to the International Space Station for launch from Cape Canaveral Air Force Station, Florida, in 2020. A second ISS cargo flight is contracted to lift off the next year. “ULA is an important player in the market and we appreciate their history and continued contributions to space flights and are pleased to support the aerospace community in Colorado and Alabama,” said Mark Sirangelo, corporate vice president of SNC’s Space Systems.

Financial terms of the contract were not disclosed.

One comment

LISA Pathfinder switched off

8:17 am

After a successful mission proving the technology for a full scale orbiting gravitational wave detector, LISA Pathfinder was shut off yesterday.

After 16 months of science measurements an international team deactivated the LISA Pathfinder satellite on the evening of the 18th of July 2017. The gravitational-wave laboratory in space powered down after receiving the last commands in the evening and circles the Sun on a safe parking orbit. LISA Pathfinder has tested key technologies for LISA, the future gravitational-wave observatory in space, and has demonstrated their operative readiness. LISA is scheduled to launch into space in 2034 as an ESA mission and will “listen” to the entire Universe by measuring low-frequency gravitational waves.

The idea is laudable, but for Europe to need another seventeen years to build and launch the full scale telescope is absurd. They now know what needs to be done. It should be relatively easy and quick to get it into orbit. And even if it isn’t easy, seventeen more years? Give me a break.

2 comments

A map of Pluto

9:11 pm

Our best map of Pluto for many decades to come

The New Horizons science team has released the best maps of both Pluto and Charon possible from the images taken during the spacecraft’s fly-by of the ninth planet last year.

The new maps include global mosaics of Pluto and Charon, assembled from nearly all of the highest-resolution images obtained by New Horizons’ Long-Range Reconnaissance Imager (LORRI) and the Multispectral Visible Imaging Camera (MVIC). These mosaics are the most detailed and comprehensive global views yet of the Pluto and Charon surfaces using New Horizons data.

The new collection also includes topography maps of the hemispheres of Pluto and Charon visible to New Horizons during the spacecraft’s closest approach. The topography is derived from digital stereo-image mapping tools that measure the parallax – or the difference in the apparent relative positions – of features on the surface obtained at different viewing angles during the encounter. Scientists use these parallax displacements of high and low terrain to estimate landform heights.

You will also notice large areas of both Pluto and Charon that remain very fuzzy and unclear. What exactly is there will remain a mystery for many decades to come.

Leave a comment

Dream Chaser test vehicle undergoing tow tests

8:58 pm

Capitalism in space: Sierra Nevada’s Dream Chaser engineering test vehicle underwent tow tests today.

Rolling on two main landing gear wheels and a nose skid, the Dream Chaser traveled down a runway Monday in Sierra Nevada’s latest tow test at Edwards Air Force Base, which is co-located with NASA’s Armstrong Flight Research Center. Once cut free from its tow vehicle, the Dream Chaser slowed to a stop, allowing engineers to gather data on the craft’s brakes, steering system, and guidance, navigation and control sensors that will line the spaceplane up for landing, according to Eric Cain, a Sierra Nevada engineer who described Monday’s test on the company’s Twitter account.

More tests are planned in the coming months, including additional tow tests and a “captive carry” flight with the Dream Chaser suspended under a helicopter.

This is the same engineering test vehicle that underwent tow tests and flew successfully once, though its landing gear failed up upon touchdown. They have replaced that landing gear, which was borrowed from the Air Force and was never intended to be the spacecraft’s wheels. Thus, they need to go through these tests all over.

Leave a comment

NASA communications satellite damaged during launch prep

8:20 am

A NASA TDRS communications satellite, scheduled for a August 3 launch on a ULA Atlas 5 rocket, was damaged on July 14 while it was undergoing final preparations for launch.

Though the issue apparently involves one of the satellite’s main antennas, it is unclear what happened exactly or how extensive the damage was. Furthermore, this article about the incident notes that an earlier incident had also occurred during shipping.

It is understood this latest incident is not related to a ‘close call’ that NASA was investigating earlier in the flow. That incident involved the spacecraft’s shipping container – containing environmental instrumentation – which slid a couple of feet on the trailer it was being winched on to.

If I was a customer who might want to buy the launch services of ULA, I would demand detailed information about why these incidents happened, including what measures are being taken to prevent them from occurring again.

4 comments

First Starliner manned flight delayed to late 2018

9:24 pm

Boeing has revealed that the first manned flight of its commercial Starliner capsule will likely be delayed a few more months to late 2018.

The latest confirmed schedules from NASA show the uncrewed mission, dubbed the Orbital Flight Test (OFT), slated for No Earlier Than June 2018, followed quickly in August 2018 by the crewed flight test.

However, comments made by Chris Ferguson last month at the Paris Air Show seem to indicate that the crewed flight test is moving from its August timeframe. According to Mr. Ferguson, Director of Crew and Mission Operations for Boeing’s Commercial Crew Program, the first Starliner crewed test flight is aiming for “last quarter of 2018” – which would be a shift of two to five months into the October to December 2018 timeframe.

The unmanned test flight, however, remains set for a June 18, 2018 launch.

37 comments

Commercial space has won

1:12 pm

Today the Senate Subcommittee on Space, Science, and Competitiveness, chaired by Senator Ted Cruz (R-Texas), held the third of a series of hearings on the future regulatory framework required for American commercial space to prosper.

My previous reviews of the past two hearings can be found at these links:

In today’s hearing the witnesses in general once again called for a variety of reforms that would simplify the regulatory process for private enterprise. Dr. Moriba K. Jah, associate professor from University of Texas at Austin, suggested removing NOAA’s veto power on remote sensing, something that the proposed House bill I analyzed in my Federalist op-ed actually does). Jeffrey Manber of Nanoracks suggested giving the private sector a certain date when ISS will be decommissioned so that they can more easily obtain investment capital for building the privately-built space facilities that will replace it. Tim Ellis of Relativity, a company trying to build rocket engines manufactured entirely by 3D printing, called for more American spaceports, accessible by private companies, as well as a simplification of the FAA permitting process. Robert Cabana, Director at the Kennedy Space Center, talked about the need for government facilities to provide the infrastructure for private companies, as the center has done for the private launch sites and manufacturing facilities they have helped get established at Kennedy since the retirement of the shuttle.

Tim Hughes from SpaceX topped them all.
» Read more

8 comments

Lunar landers/rovers for sale!

10:40 pm

Moon Express, one of the five finalists trying to win the Google Lunar X-Prize (GLXP) before it expires at the end of this year, announced today its long range plans, focused on building low cost lunar landers rovers, and sample return missions that could be purchased and launched for a tenth the cost of a typical government mission.

The GLXP mission won’t be the last lunar voyage for Moon Express, if all goes according to plan. Its deal with Rocket Lab covers up to five launches, and Moon Express wants at least two more to occur in the next few years, Richards revealed during a news conference today.

The first post-GLXP mission, scheduled to launch in 2019, will set up a robotic research outpost near the lunar south pole and prospect for water and other resources. Then, in 2020, Moon Express will launch the first commercial lunar sample-return mission. That effort, Richards said, should prove out the company’s technologies and its business model, which is centered around creating low-cost access to the moon’s surface for a variety of customers. The core piece of hardware to make all of that happen is a single-engine lander called the MX-1, which will launch on the GLXP flight. Moon Express aims to mass-produce the MX-1, sell it as a stand-alone lunar explorer and have it serve as a building block for three larger, more capable spacecraft — the MX-2, the MX-5 and the MX-9, Richards said today.

The MX-2 combines two MX-1s into a single package, boosting the MX-1’s payload capacity in Earth-moon space and potentially enabling missions to Venus or the moons of Mars. As their names suggest, the MX-5 and MX-9 incorporate five engines and nine engines, respectively, and broaden the exploration envelope even further, Richards said. All of these spacecraft will be available in orbiter, lander and deep-space variations, and the MX-5 and MX-9 vehicles will also come in a sample-return configuration.

Moon Express has not revealed how much it will charge for any of these spacecraft. However, company representatives have said that, together, the MX-1 and Electron can deliver a lunar mission for less than $10 million (that’s “cost,” not retail). Electron flights currently sell for about $5.5 million apiece, putting the lander’s raw cost at $4.5 million or less.

Essentially, they are taking the revolution in satellite technology that is making everything smaller and cheaper and applying it to planetary exploration. They are then offering this technology as a very cheap and fast option for scientists and governments. Based on these numbers, a mission to the Moon could cost a customer less than $20 million, which is nothing compared to a typical NASA mission. Even India’s Mars Orbiter was several times more expensive than this.

While I consider NASA’s planetary program second to none, and one of the best things it does, Moon Express is demonstrating, as has SpaceX with launch services, that private enterprise, if given the chance, can do it better.

Leave a comment

Juno images of Great Red Spot released

5:42 pm

The Juno science team has released the images taken by Juno as it flew past Jupiter’s Great Red Spot on June 11.

The three images at the link were all processed by citizen scientists, who took the raw images provided immediately and enhanced the colors. Not surprisingly, the images reveal that there are storms within storms within storms inside the Spot, which itself is a storm, the largest in the solar system.

Leave a comment

Mars rover update: July 12, 2017

2:49 pm

Summary: Curiosity looks at some big dune ripples, then creeps up hill. Opportunity tests its wheels.

Curiosity

For the overall context of Curiosity’s travels, see Pinpointing Curiosity’s location in Gale Crater.

The interior of a dune ripple

Since my last update on June 23,, Curiosity has worked its way around and, for a few days, even into the small sandy field at the base of Vera Rubin ridge. The scientists noticed that the sandy here had a series of large ripples, and they wanted to take a close look at at least one. The image on the right, cropped to show here, was taken shortly after they had the rover drive through one ripple in order to expose its interior. You can see the robot arm directly above the cut created by the rover’s wheels. On the cut’s wall several distinctly different toned layers are visible. A close look reveals that they are wavy, and probably indicate numerous and repeated overlays as the wind brushes a new layer of dust on top of old layers, time after time. The different tones indicate a change in the material’s composition, which could reveal something about some past events in either Mars’ weather or geology.

In order to decipher this information, however, they will need to be able to date the layers, and figure out when each tonal change happened. I am not sure Curiosity can do this, especially since they have not scooped up any of this dust for later analysis.

They are now approaching Vera Rubin Ridge, and should climb up onto in the coming weeks. At that point they will move off the Murray Formation, where they have been since March 2016, made up of dried and ancient crushed mud, and up onto a lighter, yellowish layer of rock, dubbed the Hematite Unit. This October 3, 2016 press release. gives a good outline of the geology of these regions.
» Read more

Leave a comment

Africa and space

10:07 am

Link here. Prompted by the launch last week of Ghana’s first satellite from ISS, this article take a look at what other African countries are doing to become players in the new colonial movement, noting efforts being done by Nigeria, South Africa, Ethopia, Angola, and Kenya.

Overall, no African country is doing very much in space. The fact that this African-centered news outlet feels compelled to note this, however, suggests that the competitive urge might be stirring there.

Leave a comment

Navy temporarily relieves commander from ocean collision

10:59 am

The Navy has temporarily relieved the injured commander of the U.S.ship involved in a major ocean collision with a cargo ship in mid-June.

The investigation is on-going, and they say this action is because he is injured, not because of any decision based on the investigation. I personally do not expect this commander to ever get a command again.

For those that want to read a detailed discussion on Behind the Black of this incident, see this thread.

3 comments

China’s giant single dish radio telescope FAST nears completion

10:19 am

The new colonial movement: The completion of FAST, the world’s largest single dish radio telescope in China, nears completion.

The article over emphasizes one of the telescope’s minor research projects, the search for alien life. However, it also provides a good overview of the telescope’s status. The main dish is finished, and they are presently building the instruments that will use that dish to do astronomical research.

Leave a comment

The confusing Iranian space program

10:06 am

Link here. While written as an op-ed outlining the chaotic state of the Iranian space effort, the article highlights two pieces of interesting information.

First, Iran wants to create its own GPS satellite system, which the article refers to as a “pointing, navigation, and timing” (PNT) system.

Mojtaba Saradeghi, a deputy director of the Iran Space Agency (ISA), recently told Iranian media that the ISA plans to develop an indigenous PNT capability. Saradeghi said that the PNT programme is a long-term one and that the ISA is still figuring out how it will be funded.

This announcement is almost certainly pure bluster, instigated by the agreements signed last week between Israel and India, one of which involved working together to develop their own atomic clocks used in GPS satellites.

Second, Iran has decided that instead of launching an already built smallsat they will put it on display in a museum. The smallsat, Mesbah, was built in partnership with Italy back in the early 2000s but never launched because it was seized by Russia and Italy in 2006 due to international sanctions. Though negotiations are on-going now to get it released with the easing of sanctions, the head of the Iran Space Agency, Mohsen Bahrami, on July 2 still said it was going to be mothballed if they get it back.

This incoherence fits with other recent announcements by Iran. They have repeatedly been promising that a number of satellites will be launched in the coming months, but those launches seem to never happen. In addition, they announced in early June that they were shutting down any further work on a human space mission, citing cost.

I would not be surprised it missile tests continue, however. Iran is a corrupt theocracy and semi-dictatorship, and it is typical of these kinds of top-down governments to focus their effort on military technology.

One comment

China begins 200-day simulated self-sufficient space station experiment

9:32 am

The new colonial movement: Four Chinese students yesterday began a 200 day experiment, living in a simulated ground-based space station that will attempt to be self-sufficient for the entire time.

The underlying but unstated goal is revealed by this quote:

But the 200-day group will also be tested to see how they react to living a for period of time without sunlight. The project’s team declined to elaborate. “We did this experiment with animals… so we want to see how much impact it will have on people,” Liu, the professor, said.

They aren’t just testing the self-sufficiency of a future interplanetary spaceship. They are also testing the self-sufficiency of a lunar base, which must undergo 14 days of darkness each lunar day. I wonder if the facility is also subjected to no sunlight during these tests.

2 comments

Creating space dirt

9:50 am

Space engineers who need to simulate the surface of planets, moons, and asteroids in order to test their rovers, drills, and landers for future missions are demanding better alien dirt.

James Carpenter just needed some fake Moon dirt. Carpenter, a lunar-exploration expert at the European Space Agency (ESA) in Noordwijk, the Netherlands, works on a drill designed to hunt for buried ice on the Moon. His team recently ordered half a tonne of powdery material to replicate the lunar surface from a commercial supplier in the United States. But what showed up was not what the team was expecting. “The physical properties were visibly different,” says Carpenter.

His experience underscores a longstanding problem with artificial space soils, known as simulants: how to make them consistently and reliably. But now there is a fresh effort to bring the field into line. Last month, NASA established a team of scientists from eight of its research centres to analyse the physical properties and availability of existing simulants. And, for the first time, an asteroid-mining company in Florida is making scientifically accurate powders meant to represent the surfaces of four classes of asteroid. It delivered its second batch to NASA on 28 June.

The article is worth reading in its entirety, as it describes an engineering problem that I am sure most space geeks, including myself, never thought even existed.

5 comments

XCOR layoffs due to loss of ULA contract

9:32 am

Capitalism in space: The layoffs at XCOR this week that essentially shut the company down were the due to ULA cancelling its upper stage engine contract with the company.

The primary impetus for the layoffs, Acting CEO and XCOR Board member Michael Blum told me, is the loss of a contract for engine development that the company had with United Launch Alliance. “The proceeds should have been enough to fund the prototype of Lynx [the company’s planned spacecraft], but ULA decided they’re not going to continue funding the contract. So we find ourselves in a difficult financial situation where we need to raise money or find joint developments to continue.” ULA declined to comment.

9 comments

Crab Processing

6:01 pm

An evening pause: It is quite surprising how this process is still almost entirely done by hand.

Hat tip Edward Thelen.

I sure could use more engineering type evening pause suggestions like this. You all like them, so you must know how to find them. If you have a suggestion, let me know in a comment here. Don’t give the link, I will email you for it.

4 comments

China planning its own commercial sea launch platform

10:35 am

The new colonial movement: According to one Chinese official, China is developing its own ocean-going launch platform for placing commercial payloads into orbit.

Tang Yagang, vice head of the aerospace division of the No.1 institute of the China Aerospace Science and Technology Corporation (CASTC), said that the technology is not difficult and a sea launch platform can be built based on modifying 10,000-tonne freighters.

China will use solid carrier rockets which rely less on launch facilities and feature mature technology, Tang said, adding that key technology for the carrier rockets will be tested at sea this year and the service is expected to be available for international users in 2018.

This pronouncement suggests that the platform is already mostly built, and that the first test launches will occur this year.

5 comments

ESA unveils dual orbiter mission to Mercury

10:31 am

After twenty years of development, the European Space Agency this week finally unveiled the completed dual orbiters that it hopes to launch on a seven year journey to Mercury in October 2018.

The 4,100-kilogram BepiColombo consists of two orbiters that will launch together — the ESA-managed Mercury Planetary Orbiter (MPO) and the JAXA-owned Mercury Magnetospheric Orbiter (MMO). The two spacecraft will be delivered to the orbit around Mercury stacked on top of each other by the Mercury Transfer Module (MTM). During the seven-year journey, the MMO will be shielded from the sun by the MMO Sunshield and Interface Structure (MOSIF), which will also serve as a mechanical and electrical interface between the two orbiters.

“MPO focuses on the planet, the surface and the interior size,” said Reininghous. “The orbit is a polar one — 480km times approximately 1500km — a little bit elliptical but extremely close to the planet as such with a return period of 2.3 hours. The data return is estimated at 1.5 gigabit per year.”

The MMO will focus on the planetary environment including the planet’s atmosphere, according to Reininghous. “The orbit is also polar but far more elliptical — 590 km times approximately 11,700 km. It has a period of 9.3 hours. The data return is approximately 10 percent of what we expect from the MPO.”

The European orbiter is much larger and more expensive, with Japanese probe budget being about a tenth the cost.

According to ESA, the mission took so long to build because in 2004, after about seven years of development, ESA suddenly realized that its orbiter’s thermal protection was inadequate, and required a complete redesign. To me, this is either outright incompetence (they knew from the start they were going to Mercury) or a clever way to extend the funding so that it provides an entire lifetime’s work for its builders. Think about it. Twenty-one years from concept to launch, then seven years to fly to Mercury, and then one to two years in orbit. That’s more than thirty years for this single mission.

One comment

Roskosmos completes investigation into deadly post launch debris fire

10:21 am

Russia’s space agency Roskosmos has completed its investigation into the brush fire that caused two deaths at the impact site of the first stage of Soyuz rocket on June 14.

The report reveals several interesting details. First, it appears that the impact sites for abandoned first stages of Russian rockets are considered “planned.” This is not hyperbole. If the launch proceeds as intended, it should be possible to calculate with some accuracy where the abandoned first stage will hit the ground.

Second, it appears the deaths occurred when high winds caused the flames from the impact brush fire to engulf the two workers, one of whom died immediately, with the second dying several weeks later in the hospital.

Third, the agency will do more thorough reconnaissance of impact sites, before and after impact, before sending crews there. It will also augment the equipment and crews, depending on need.

One comment
1 … 265 266 267 268 269 … 454