Tag: NASA

NASA uses computer model to find exoplanets

11:26 am

Garbage in, garbage out: Using statistical computer modeling only, NASA today announced that they are certain that almost a third of Kepler’s candidate exoplanets are really exoplanets.

Analysis was performed on the Kepler space telescope’s July 2015 planet candidate catalog, which identified 4,302 potential planets. For 1,284 of the candidates, the probability of being a planet is greater than 99 percent – the minimum required to earn the status of “planet.” An additional 1,327 candidates are more likely than not to be actual planets, but they do not meet the 99 percent threshold and will require additional study. The remaining 707 are more likely to be some other astrophysical phenomena. This analysis also validated 984 candidates previously verified by other techniques.

This is actually a stupid announcement. They haven’t learned a damn thing from this statistical analysis, but are merely saying that because Kepler found a lot of candidates, a lot of those candidates must be real planets. Worse, NASA is also implying here that confirming some of these candidate exoplanets by hard observations is now really unnecessary, since they can do it statistically.

This smacks of the corruption that has ruined much of climate research, allowing a computer model to replace actual observations. Big mistake. But I also suspect this announcement occurred for the same reasons: NASA wishes to justify its work and its funding, and thus decided to make a big deal about this very minor statistical analysis in order to puff up the discoveries of Kepler, even though there is no reason to do so.

I expect a lot of mainstream news organizations to write big puff pieces extolling this announcement in the coming days, which will once again prove that almost no one in journalism today has the slightest ability to apply their own independent analysis to the press releases they receive.

8 comments

Congressman proposes major changes to regulation of commercial space

9:46 am

Doug Messier has posted a detailed analysis of Congressman Jim Bridenstine’s (R-Oklahoma) proposed American Space Renaissance Act (ASRA) that is definitely worth reading.

Most of the changes appear aimed at organizing the regulation process of commercial space more completely under FAA control, rather than the hodge-podge of agencies that presently have responsibility. The bill also encourages NOAA and NASA to increase their use of commercial data for weather and Earth remote sensing.

At first glance, the bill looks good, but it also is not likely to be passed as written. Moreover, not surprisingly it calls for a hefty increase in funding for the FAA agencies being given more responsibilities, but I wonder if Congress will comparably reduce the funding of those agencies it takes responsibility from. My instinct tells me no, which means of course that the government and bureaucracy grows again.

1 comment

NASA signs engineering test agreement with new launch company

10:52 am

The competition heats up: NASA has signed an agreement to provide testing facilities to Generation Orbit so it can do test flights of its air-launched rocket.

Generation Orbit Launch Services, Inc. (GO) is pleased to announce the signing of a Space Act Agreement with NASA Armstrong Flight Research Center (AFRC) to collaboratively pursue the flight test and envelope clearance for the GOLauncher 1 air launched rocket vehicle. Utilizing AFRC’s experience and capabilities in flight test engineering for air launch rocket systems, the two year program will demonstrate integration of the GOLauncher 1 Inert Test Article (GO1-ITA) with NASA’s Gulfstream III research aircraft, captive carry flight testing, and release testing. Further, NASA AFRC will continue the development of its store separation analysis capability, eventually validating the toolset through release flight testing of the GO1-ITA.

Like many similar past SAA agreements, NASA will provide no money, but will make its facilities available for testing at no charge. For a new company like this, this availability will help them enormously, and is more in line with what NASA was originally designed to do.

0 comments

Senate committee throws money at NASA

9:13 am

The Senate appropriations subcommittee has announced its proposed 2017 budget for NASA, including significant budget increases for SLS and Orion.

SLS is the big winner in the bill, according to a summary of its contents provided by the committee. The heavy-lift launch vehicle would get $2.15 billion, $150 million more than it received in 2016 and $840 million above the administration’s request. The SLS funding includes $300 million directed for work on the Exploration Upper Stage with the goal of having it ready as soon as 2021, the earliest planned date for the first crewed SLS/Orion mission.

The bill also provides $1.3 billion for Orion, $30 million above 2016 and $180 million above the administration’s request. It also directs Orion to be ready for its first crewed mission in 2021.

The bill provides $5.4 billion for science programs overall, $200 million below the request. The summary does not break out spending among the various science mission directorates. Commercial crew would get $1.18 billion, the amount requested by NASA, and space technology would get $687 million, the same as 2016 but $140 million less than requested.

Meanwhile, in order to keep NASA’s overall budget about the same as last year the subcommittee, led by porkmeister Richard Shelby (R-Alabama), apparently trimmed the agency’s science budget.

The full plan will be revealed tomorrow. Moreover, the House still has to make its budget proposal, and then the House and Senate have to agree. Regardless, this Senate budget proposal is more indication that this Republican Congress is going to throw endless gobs of money at SLS and Orion, so the boondoggle can fly once, maybe twice, and then get mothballed. What a waste.

It also tells us how insincere many Republican elected officials are when they claim they are for fiscal responsibility.

5 comments

The Orion fantasy

10:21 am

There is a commercial space conference going on in Colorado this week, which explains the plethora of breaking stories from the new commercial space companies both yesterday and today.

Two stories today from Aviation Week, however, are more about the old big space industry and the old way of doing things, and both reveal the hollow nature of that entire effort.

Both stories are about work Lockheed Martin is doing in connection with its Orion capsule, and both try to convince us that this capsule is going to be the central vehicle for the first missions to Mars.

Function starts in the bones of the spacecraft,” [Mike Hawes, Lockheed Martin vice president and Orion program manager,] said in an April 12 interview at the 32nd annual Space Symposium here. “To be a deep space spacecraft, you have to build differently than you would if your requirements were to stay in low Earth orbit and be quiescent at the International Space Station for a few months. That’s driven Orion from the beginning. Any architecture you look at needs a crew capability, a long-term design requirement. So, you can debate a lot of different missions, but you need that fundamental capacity we have invested in Orion.”

I say balderdash. Orion is an over-priced and over-engineered ascent/descent capsule for getting humans in and out of Earth orbit. Spending billions so it can also go to Mars makes no sense, because its heat shield and other capsule technologies for getting through the Earth’s atmosphere are completely useless in interplanetary travel. Moreover, such a small capsule is completely insufficient for a long Mars mission, even if you test it for a “1,000 day” missions, as Hawes also says in the first article. To send a crew to Mars, you need a big vessel, similar to Skylab, Mir, ISS, or Bigelow’s B330 modules. A mere capsule like Orion just can’t do it.

Eventually, it is my hope that Congress will recognize this reality, and stop funding big space projects like SLS and Orion, and instead put its money behind the competitive private efforts to make money in space. Rather than trying to build its own capsules, space stations, rockets, and interplanetary vessels (something that NASA has repeatedly tried to do without any success), NASA should merely be a customer, buying the capsules, space stations, and interplanetary vessels that private companies have built, on their own, to make money, on their own.

Consider for example Bigelow’s B330. Each module is about as big as Skylab or Mir, and costs mere pennies to build and launch, compared to those government-designed stations. Moreover, Bigelow can build it fast, and repeatedly. Similarly, Orion has cost billions (about $16 billion when it makes its first manned mission in 2021 at the earliest) and will have taken 15 years to build. SpaceX built Dragon in seven years, Orbital ATK built Cygnus in five years, and Boeing is going to build Starliner in about four years, all for about $10 billion, total.

The contrast is striking, and though ordinary people with the ability to add 2 plus 2 can see it, it takes Congressman a little longer (as they need to use their fingers to count). Sooner or later they will get it, and Orion and SLS will disappear. Bet on it.

17 comments

NASA picks Aerojet Rocketdyne engine for SLS upper stage

9:49 am

Government in slow motion: Only six years after program start, NASA has finally chosen Aerojet Rocketdyne’s legacy RL10 rocket engine for the upper stage of the SLS rocket.

The RL10 is an expander cycle liquid hydrogen/liquid oxygen rocket engine typically used on upper stage applications. It was first developed by Pratt & Whitney in the late 1950s and first flown in 1963. It has flown on hundreds of launches, logged approximately 15,000 hot fires, and accumulated more than 2.3 million seconds of hot fire operation time with a demonstrated reliability ratio greater than 0.999 throughout its history. The RL10 – which is used in various forms with Atlas’ Centaur Upper Stage (RL10A-4-2) and Delta IV’s Upper Stage (RL10B-2) – has a history back to the Saturn I’s S-IV Stage.

No other engine exists that can be built in time. Even so, the engine will not be ready for the first SLS launch tentatively scheduled in 2018, but will instead be used on the next two flights. The article also indicates that NASA is planning to delay SLS’s second flight two years to 2023, creating a five year gap which they will use to integrate the RL10 into SLS, while also rebuilding the mobile platform used to move SLS to the launchpad. (For some reason, the reconfiguration installed for the first SLS flight won’t work for later flights.)

The delay to 2023 has not been announced officially, but I have seen too much evidence recently, including statements in this GAO report, that tells me the delay is certain. Furthermore, it seems increasingly likely that the second flight will also be unmanned, and it won’t be until the third flight (as yet unfunded by Coingress) that humans will finally fly on SLS.

The cost? I am doing an analysis of this subject right now for a policy paper I am writing for a Washington think tank, and my preliminary estimate exceeds $41 billion for NASA to fly just one manned flight of SLS. That’s a bit more expensive than the $10 billion NASA is paying SpaceX, Orbital ATK, and Boeing to launch more than a dozen cargo freighters and as many as a dozen manned flights to ISS.

For those elected officials out there who have trouble with math, let’s compare again:

  • SLS: $41 billion for one flight, 15 years development to first flight.
  • Commercial space: $10 billion for two dozen flights, 5 years development to first flight.

Which costs less and gives more bang for the buck? Can you figure that out, Congressmen and Senators? If you need help I can provide you a few more fingers so you can count above ten.

11 comments

Misuse revealed of vomit comet at NASA

7:16 pm

It appears that, stuck with the “vomit comet” airplane that they no longer had much use for, NASA managers tried to justify its existence and budget by assigning it tasks for which it and its crew were not designed or trained to do.

The unorthodox use of the C-9 aircraft was driven, according to the complaints, by a desire at the high levels of the agency to prove the Vomit Comet was of practical use. Apparently, it didn’t work—the C-9 aircraft program was defunded and shut down in 2014.

Since 1959, NASA has used a variety of aircraft to simulate the weightlessness of space in order to train astronauts and perform basic experiments in zero gravity. From 2005 to 2014, the C-9, built in 1970, became one of NASA’s primary Vomet Comets. According to documents uncovered by Motherboard using the Freedom of Information Act (embedded at the bottom of this article) show that the Vomit Comet was used on at least two occasions for purposes other than simulating space flight, while still labeling the missions “crew training.” In 2013, the agency officially looked into having the plane reclassified to run these types of missions.

In one of these cases, the plane was flown to Greenland without the proper equipment or training for the crew, and experienced what was described by crew as “a near fatal crash.” It didn’t crash, but the crew apparently feared for their lives.

The program was shut down in 2014 with the operations handed over to private companies. Now if NASA needs to train astronauts, they simply hire these companies, which make the bulk of their money flying private missions, something NASA wasn’t allowed to do.

2 comments

SLS software over budget and behind schedule

5:28 pm

Surprise! The launch control software NASA is writing from scratch for its SLS rocket is way behind schedule and way over budget.

Development of this new launch control software is now projected to exceed $207 million, 77 percent above 2012 projections. The software won’t be ready until fall 2017, instead of this summer as planned, and important capabilities like automatic failure detection, are being deferred, the audit noted. The system is vital, needed to control pumps, motors, valves and other ground equipment during countdowns and launches, and to monitor data before and during liftoff.

NASA decided to write its own computer code to “glue together” existing software products a decade ago — while space shuttles still were flying and commercial shippers had yet to service the space station. Both delivery companies, SpaceX and Orbital ATK, rely on commercial software, the audit noted. [emphasis mine]

In other words, even though NASA could have simply purchased already available software that other launch companies were using successfully, the agency decided to write its own. And that decision really didn’t come before the arrival of these commercial companies, because when it was made a decade ago that was exactly the time that SpaceX was beginning to build its rocket.

This is simply more proof that SLS is nothing more than a pork-laden waste of money designed not to explore space but to generate non-productive jobs in congressional districts.

3 comments

New Horizons’ future research goals

9:15 am

On Monday at a planetary science conference Alan Stern, the project scientist for New Horizons, outlined the science goals in studying the Kuiper Belt should the spacecraft’s mission be extened through 2021.

The main goal will be the January 1, 2019 fly-by of Kuiper Belt object 2014 MU69, estimated to be between 12 to 24 miles across. However, the proposal also includes the following:

“In addition to making a close flyby of MU69, we’re also going to be close enough in range to study quite a number of other small KBOs, and some large ones that are on the Pluto scale,” Stern said. New Horizons will be able to study them in ways that could never be accomplished from Earth. The closeness of the spacecraft will enable high resolution observations, and the ability to look for satellites that cannot be seen from Earth observatories or with the Hubble Telescope.

“Because we are looking back on the rest of the solar system, at the Kuiper Belt and the Centaur Population,” Stern said, “we’re going to be able to study another 18 or 20 small bodies to determine whether or not the recently discovered rings around the centaur Chariklo are a common occurrence, or something anomalous. And I don’t know of any other way over the next several years, except through New Horizons, that we can develop a data set like that.”

What I find amazing is that it appears from Stern’s remarks that NASA has not yet approved this proposal. Before the team discovered 2014 MU69, I would have been more skeptical about extending the mission, but since they will be able to do a close fly-by of a type of object never before seen, and considering the time and cost it takes to get to the Kuiper Belt, it seems foolish now to not approve this mission extension.

0 comments

Atlas 5 launches Cygnus

11:04 pm

The competition heats up: A ULA Atlas 5 rocket tonight successfully placed an Orbital ATK Cygnus freighter into orbit to resupply ISS.

This was the second time an Atlas 5 put Cygnus into orbit. The next Cygnus flight will mark the return of Orbital’s Antares rocket.

This Cygnus capsule contains probably one of the more interesting engineering experiments flown by NASA in years. When it leaves ISS in about two months they will ignite a fire inside it to study the way fires spread and burn in weightlessness.

1 comment

SpaceX sets date for next Dragon launch

8:41 am

The competition heats up: SpaceX has scheduled April 8 for the next Falcon 9 launch, set to carry its first Dragon capsule since the launch failure last year.

Though this is the most important news contained by the article, its focus is instead on the various preparations that SpaceX is doing at its Texas test facility to prepare for this launch as well as the increased launch rate required for the company to catch up on its schedule.

Note that the Dragon launch will also be significant in that it will be carrying Bigelow’s inflatable test module for ISS, built for only $17 million in less than 2 years. NASA, ESA, or JAXA would have required at least half a billion and several years to have accomplished the same.

0 comments
1 … 122 123 124 125 126 … 192