Juno closing in on Jupiter

Jupiter from Juno

On Friday the Juno science team released a new image of Jupiter taken by the spacecraft from about 6.8 million miles away.

The reduced resolution image on the right is cropped but with the colors enhanced to bring out the four Galilean moons, Ganymede, Callisto, Europa, and Io. The website notes that “Juno is approaching over Jupiter’s north pole, affording the spacecraft a unique perspective on the Jovian system. Previous missions that imaged Jupiter on approach saw the system from much lower latitudes, closer to the planet’s equator.”

Rendezvous and orbital insertion happens on July 4.

0 comments

Virgin Galactic gets another launch contract

The competition heats up: Virgin Galactic has signed a launch contract with new communications satellite company Sky and Space Global to use LauncherOne to put 200 nanosats into orbit in 2018.

This contract suggests that Virgin Galactic might be making good progress on LauncherOne. Or it might mean that Sky and Space has some commitments that forced it to pick Virgin Galactic over other smallsat launch companies that appear to be farther along in development. Either way, the stock market looked at this deal and, as noted in the article above, sold off enough Sky and Space stock for its value to drop.

1 comment

China launches first Long March 7 rocket, recovers test capsule

The competition heats up: China successfully launched its first Long March 7 rocket on Saturday, the first launch also from its new Wencheng Spaceport.

According to this official Chinese report, the test capsule on the rocket also landed successfully and has been recovered.

Previously I had mistakenly reported that this launch would put into orbit China’s next test space station module. That launch is not until the fall.

0 comments

Getting and Installing Linux

After seeing the response to a number of my posts on the advantages of Linux (or anything) over Windows, one of my readers, James Stephens, offered to write a series of posts for Behind the Black, describing step-by-step the process by which one gets and installs Linux on a desktop or laptop computer. James is like almost every other user of Linux, self-taught and unafraid to play with the software. As he emailed me, “Over my long career I’ve had my hands in everything from vacuum tube televisions to sophisticated aerospace systems some of which are orbit today. I have designed and built recording studios, radio and television studios and serviced the equipment as well as the transmitters. But I must say I really enjoyed repairing televisions the most. I loved every aspect of the business and really enjoyed doing business with my customers.” At the present time James makes his living maintaining what he calls “a fleet of computers, Windows, Mac, and Linux.”

So, today we begin this series. If all goes as planned, James will be sending these to me on a weekly basis, whereby I will post them each Saturday. So, get one of your old unused computers out of the garage now and get ready to make it useful again, while simultaneously freeing yourself from Microsoft!

An Introduction

By James Stephens

Your phone your TV, most of the devices you use everyday use Linux. So too most of the world’s web sites including this one. So why not your PC? The purpose of this series, which we hope to post on a weekly basis every Saturday, is to at least in a general way acquaint you with desktop Linux and some of its advantages. More importantly, we hope to assist you with representative instructions for the installation and use of this most excellent computer operating system.

But first a few words of explanation.
» Read more

12 comments

Russia looks to reduce Proton launch costs

The competition heats up: Russian officials are considering developing a new variant of the Proton rocket that would cost less to launch and thus make the rocket more desirable in the increasingly competitive launch market.

They have not made a decision yet. As the article notes,

[G]iven the extended length of time required for even less radical upgrades of Proton and the official Russian strategy to phase out the vehicle in favor of Angara-5, it is unclear whether it would be possible to justify the Proton-Light development effort. A number of previous proposals to change the shape and size of the Proton-M rocket were deemed too expensive more than a decade earlier in the rocket’s operational career.

2 comments

Hubble lives on!

NASA has extended the contract with the Space Telescope Science Institute in Baltimore, Maryland to operate the Hubble Space Telescope for another five years, through 2021.

Launched in 1990 and repaired for the first time in 1993, Hubble appears likely to operate for more than three decades, a stunning record for any spacecraft.

4 comments

Saturn from Cassini

Saturn's rings

Cool image time! The image on the right, reduced in resolution to post here, shows how, because of the seasonal tilt of Saturn, the shadow of its rings is now cover much of the gas giant’s southern hemisphere.

When NASA’s Cassini spacecraft arrived at Saturn 12 years ago, the shadows of the rings lay far to the north on the planet. As the mission progressed and seasons turned on the slow-orbiting giant, equinox arrived and the shadows of the rings became a thin line at the equator. This view looks toward the sunlit side of the rings from about 16 degrees above the ring plane. The image was taken in red light with the Cassini spacecraft wide-angle camera on March 19, 2016.

We will continue to get from Cassini increasingly beautiful images of Saturn and its rings as the spacecraft positions itself better for its final flight down into the planet’s atmosphere.

0 comments

SpaceX’s first stage teaches them how to land on Mars

The competition heats up: This update on the status of SpaceX’s manned Dragon capsule also provides this interesting detail about the engineering knowledge gained from the company’s effort to vertically land its Falcon 9 first stages:

The company is also using the propulsive landings as a way to practically and physically test landing systems in a near-Mars atmospheric environment. β€œEarth’s upper atmosphere is also a really good analogue for Mars’ atmosphere,” noted [Garrett Reisman, Director of Space Operations]. β€œWhen you get up high enough, the density and consistency of the atmosphere is very similar to what you face during Entry, Descent, and Landing (EDL) on Mars. So every time we land, we take one of these rockets and we perform hypersonic retrograde propulsion, the data from which we’re sharing with JPL because it’s the first time this has ever been demonstrated on a major scale.”

To this end, Reisman pointed out that the Falcon 9 first stage landings are really serving as test beds for the EDL systems of eventual Mars missions. β€œEvery time you see one of those rockets coming back, not only is it enabling a whole new paradigm for launching things into space, but it’s also bringing us one step closer to Mars.

As for Dragon, it now appears the company wants to do a full unmanned demo flight to and from ISS before it performs its launch abort test. They will then follow this with a manned demo mission to ISS. All three flights are planned for 2017.

5 comments

Sierra Nevada prepares for Dream Chaser glide tests

The competition heats up: Sierra Nevada now expects to deliver its refurbished engineering test prototype of Dream Chaser to NASA for new glide tests in August.

β€œOur version of the shuttle Enterprise is about to be finished for its next phase of flight tests,” [said Mark Sirangelo, corporate vice president.] β€œSomewhere in the August time frame, it’s going to be shipped off to California, to the Armstrong [Flight Research] Center and to Edwards to be in Phase 2 of flight testing, which is going to be really fun and exciting.”

Sirangelo said lessons learned from the atmospheric flight tests will be applied to the development of the orbital test vehicle, which is now being outfitted in Colorado. That test vehicle, in turn, will blaze the trail for the spacecraft that will carry cargo for NASA under the CRS-2 contract. β€œWe are looking to be launching on time, which is about three years from now, in the second half of 2019,” Sirangelo said.

They get this cargo version flying successfully, and they will certainly get a contract to build a manned version.

1 comment

Damaged Falcon 9 first stage returns to port

The remains of the damaged Falcon 9 first stage that tipped over during its barge landing last week returned to port this past weekend.

Video and images of it can be seen at the link, all of which suggest that there is a slight chance the engines might be salvageable. Regardless, SpaceX once again has valuable used space hardware that no one else has ever had which it can study to improve its future rocket designs.

5 comments

Florida demands $15K port fee from SpaceX

Nice first stage you got there, be a shame if something happened to it: The Florida port where SpaceX has been offloading its recovered first stages from its barge has announced that it wants to charge the company $15,000 each time.

“We view their cargo passing over our dock just like any other cargo passing our dock,” Port Canaveral Chief Executive Officer John Murray said. “We’re not looking at this as an adversarial relationship. It’s no different than anything else coming across the dock. You have to pay for use of port facilities. That’s how a port makes its money.”

β€œThe proposed wharfage fee is 14 times higher than what any other business is being charged for using port facilities,” SpaceX spokesman John Taylor said in an emailΒ to FLORIDA TODAY. “Port Canaveral is an important partner in our recovery operations. But we expect fees to be fair and reflect our actual use of the port. We’re looking forward to participating in the meeting later this week.”

The port notes that the size and the weight of the first stages cause significant wear and tear to the port, and thus should pay more. They have a point, but this still looks like they have noticed they have a customer with deep pockets that they now are trying to pick.

Posted from Linthicum, Maryland.

5 comments

Stratolaunch three quarters complete

The competition heats up: Vulcan Aerospace now says that construction of its Stratolaunch airplane, the largest ever to fly, will be completed by the end of this year.

Assembly of the plane is 76 percent complete, with the engines, landing gear and one tail section still to be installed. The plane is expected to be finished before the end of the year. Commercial services are expected to begin before 2020.

They still have not determined the second stage rocket they will use with this mother ship to launch satellites, which leaves me increasingly skeptical about their future. It is very late in the game to still not know this detail.

0 comments

New Shepard successfully completes fourth flight

The competition heats up: Blue Origin today completed the fourth test flight of its New Shepard suborbital spacecraft, successfully landing intact its capsule with only two parachutes.

That’s four flights in about seven months, which for a test program seems a reasonable pace. I would expect them to soon begin testing faster turnaround times for the spacecraft, just to see if they can launch and repeat more quickly.

1 comment
1 586 587 588 589 590 821