Squirrel vs Physicist
An evening pause: This battle between an inventive physicist and an even more determined squirrel does raise the question, who really is smarter?
Hat tip Tom Biggar.
An evening pause: This battle between an inventive physicist and an even more determined squirrel does raise the question, who really is smarter?
Hat tip Tom Biggar.
Officials from Sierra Nevada today revealed they have now delayed the first flight of their mini-reusable Dream Chaser shuttle Tenacity until ’22 rather than late this year.
They claim the cause of the delay is the Wuhan flu.
Sierra Nevada has not announced when in 2022 Dream Chaser will attempt to make its first flight, but Lindsey described how pandemic restrictions prevented engineers from being on site for structural testing of the cargo model. Instead, engineers remotely oversaw the tests from a mission control center in Colorado. While the workaround allowed testing to continue, it took three or four times as long as it should have, Lindsey said.
Other delays came from supplier shutdowns due to COVID-19 outbreaks. Technical challenges not related to the pandemic also caused problems, though Lindsey did not elaborate. “All of those things have conspired to move the date a little bit,” Lindsey said.
The first issue is a management decision by the company. I note that SpaceX does not create these kinds of restrictions, and has therefore not experienced any slowdown in its launches or Starship development. It also appears to be experiencing no significant issues with COVID-19 infections.
The second issue is also in a sense a management decision. Sierra Nevada is subcontracting a lot of its work, and thus is at the mercy of other companies. Once again, SpaceX made a decision years ago to do as much as possible in-house. Thus, they are at no one’s mercy, and can push forward even as others cower in fear.
Overall, the pace of development at Sierra Nevada has not been impressive, but then, much of their work is being done by others, such as Lockheed Martin.
A evening pause: Performed live in 2008.
Hat tip Wayne DeVette.
Capitalism in space: ABL Space, another one of the many startups attempting to enter the launch market using private investment capital, now predicts it will attempt its first orbital launch sometime before June of this year.
The company was formed by veterans of SpaceX and Wall Street, and uses that company’s philosophy of building as much of the rocket in-house as possible. That rocket is also more powerful than Rocket Lab’s, aiming for bigger payloads, and is designed with a very simple launchpad arrangement, so that it can launch from practically anywhere there is a concrete pad and do it quickly.
ABL now has about 105 employees, with about 90,000 square feet of space in several buildings in El Segundo, as well as testing facilities at Edwards Air Force Base and at Spaceport America in New Mexico. “We can build and ship a launch vehicle about every 30 days, based on infrastructure we have now,” Piemont said. “We’re tracking towards eight or nine [rockets] a year based on existing infrastructure.”
While ABL has significant contracts and relationships with the Pentagon, Piemont said the company’s customer pipeline is 60% private, or commercial, versus 40% government payloads. The company has customers lined up to launch payloads on its first few missions, although ABL may fly mass simulators, which are often a slab of concrete to represent a spacecraft’s weight, for the first RS1 launch.
By my count, this makes seven new rocket companies — Virgin Orbit, Firefly, Astra, Relativity Space, Aevum, ABL Space, and Blue Origin — all planning their inaugural launches in ’21. The competition for business thus should be very fierce, which is all to the good, as it will encourage these companies to all find ways to cut costs.
An evening pause: The future?
Hat tip Jim Mallamace, who added, “What is our responsibility to our devices when they become self-aware? And what will be our responsibility to each other?
Capitalism in space? Momentus, aiming to provide satellite makers a tug that can move satellites to their preferred orbit, has delayed its first mission because the many bureaucrats in the federal government need more time to review the paperwork.
In a Jan. 4 statement, Momentus said the flight of its first Vigoride tug, which was to be part of the payloads on a Falcon 9 dedicated rideshare mission launching as soon as Jan. 14, will be delayed to later in the year because it was unable to get approval from the Federal Aviation Administration for the mission. โThis move will allow for the additional time necessary to secure FAA approval of Momentusโ payloads, including completion of a standard interagency review,โ the company said in a statement.
The company did not elaborate on that review, but part of the FAA commercial launch licensing process is a review of the payload that the agency describes as intended โto determine whether its launch would jeopardize public health and safety, safety of property, U.S. national security or foreign policy interests, or international obligations of the United States.โ That process can include consultation with other government agencies.
In a Jan. 5 document filed with the Securities and Exchange Commission in the form of an interview, Fred Kennedy, president of Momentus, said there was no specific issue that was delaying that review. โThe FAA did not express any specific concerns of its own, but rather indicated that more time was needed to complete its interagency review of Momentusโ payload,โ he said. [emphasis mine]
The highlighted words reveal the truth. There is nothing wrong with the payload or its tasks. The problem is that several government agencies have not completed the paperwork, and so Momentus must wait. I imagine that there is a thick application sitting on some bureaucrat’s desk, requiring a signature, and that bureaucrat has been too busy collecting his or her paycheck at home because God forbid he or she might get the cororavirus by coming into work.
This is modern America. You don’t have the real freedom to do what you want. You must sit, twiddling your thumbs, while your betters in Washington decide whether they will allow you to do it. It doesn’t matter they know little or nothing about your goals. All that matters is that they are in charge, and can boss you around at their whim.
SpaceX today successfully completed the first launch of 2021, placing a communications satellite built by Airbus for Turkey.
The first stage successfully completed its fourth flight. Both fairings were also used, having flown previously.
At the moment, SpaceX is the only one to launch in 2021, so it leads the world at the moment.
An evening pause: A taste of 1960s pop culture, at its happiest.
Hat tip Roland.
Though no details have been released, DARPA revealed yesterday that two experimental cubesats being prepared for launch on a SpaceX Falcon 9 were damaged when the payload separation system was accidently activated.
As these were military satellites not much information was revealed by DARPA, and SpaceX made no comment.
Such things do happen rarely, but for SpaceX it is still an embarrassment and a problem. They will certainly have to figure out how this could have happened by accident, and make sure it does not happen again.
Who pays the cost for repair or replacement (more likely) is a tangled question, and will be buried in the launch contracts between DARPA and SpaceX.
Capitalism in space: SpaceX engineers yesterday successfully completed the first static fire test of the ninth prototype of Starship, in preparation for its first 50,000 foot flight.
The SN9 vehicle’s three engines lit up for about one second today (Jan. 6) at 5:07 p.m. EST (2200 GMT) during a static-fire test at SpaceX’s South Texas facilities, near the Gulf Coast village of Boca Chica.
It is possible they will do additional static fire tests before that flight, as they did this with the eighth prototype. It is also possible that all went right in this first test, and they will proceed to launch, as soon as January 8th.
An evening pause: Performed live in 1962.
Hat tip Jim Mallamace.
Two different updates yesterday and today on the development of Starship by SpaceX suggest strongly that the company is aiming for its next test flight to about 50,000 feet as early as this coming weekend.
The second story notes how the company has apparently decided it was not worthwhile keeping much of the debris left over from the crash of the eighth Starship prototype after its successful test flight on December 9th. They have instead focused entirely on clearing the landing pad as quickly as possible, even if it meant destroying some of the prototype’s remains.
The first story outlines the ongoing pressure tests for the ninth prototype, now on the launchpad, and how those tests have so far proceeded very smoothly. All that remains is SpaceX’s standard dress rehearsal countdown ending in a static fire test of the prototype. This is presently scheduled for tomorrow. Once it is accomplished, the test flight can follow quickly, probably no more than a week later, depending on weather, the data from the static fire test, and the innumerable uncertainties that routinely occur in a robust test program such as this.
An evening pause: A cute little animated film about what we may find in our search of the heavens.
Hat tip Gary McDaniel.
An evening pause: Seems somehow right for the start of a new year. Enthusiastic and hopeful, as much of American music of the past was.
Hat tip Tom Biggar.
An afternoon pause: To all my readers, supporters, and even those who disagree with me, may you all have a much better year in 2021 than you did in 2020.
With good will and hope for the future, Happy New Year!
With the year of 2020 coming to an end, it is time to look back to see how the world’s rocket industry fared in what was a truly difficult year for most. And with the 21st century now one fifth over, it is also time to take a wider view, to see what the trends have been for space exploration during this new century, and to see where those trends might lead.
Below is my annual updated table showing all successful orbital launches by every nation and company, beginning in 2000. While the table in my 2019 report last year had gone back to 1990, I decided to shorten the graph to just the 21st Century, in order to better focus on that century in particular.
Capitalism in space: In a series of tweets yesterday SpaceX founder Elon Musk revealed that the company is considering landing Starship’s first stage, Super Heavy, on its launchpad but rather than use landing legs it will be caught by the launch tower.
Instead, Musk says that SpaceX might be able to quite literally catch Super Heavy in mid-air, grabbing the booster before it can touch the ground by somehow slotting an elaborate โlaunch tower armโ underneath its steel grid fins. Although such a solution sounds about as complex and risky as it gets, it would technically preclude the need for any and all booster recovery infrastructure โ even including the legs Super Heavy would otherwise need.
While true, catching Super Heavy by its grid fins would likely demand that control surfaces and the structures they attach to be substantially overbuilt โ especially if Musk means that the crane arm mechanism would be able to catch anywhere along the deployed finsโ 7m (23 ft) length. Even more importantly, it seems extraordinarily unlikely that such a complex and unproven recovery method could be made to work reliably on the first one or several tries, implying that early boosters will still need some kind of rudimentary landing legs.
The idea is to save weight on the booster. It also would speed its reuse, as there would no longer be a need to transport it from a landing pad back to the launchpad.
Whether this will work will depend on the accuracy of SpaceX’s vertical landing software. That the company has repeatedly proven, from almost the first time it tried it, that it can bring its rockets down exactly where it intends suggests they will be able to be as accurate as necessary.
Nonetheless, expect more than a few launchpad crashes as they work out the kinks on another audacious engineering concept.
An evening pause: I have never been a fan of opera, but this piece by Verdi is truly beautiful and fun to watch.
Hat tip Jim Mallamace, who also notes its opulence.
An evening pause: Even death needs a break once and awhile.
Hat tip Jim Mallamace.
An evening pause: Performed live c1978.
Hat tip Roland.