Tag: freedom

Tallest tunnel slide to open in London

9:43 am

A reason to go to London: The world’s tallest tunnel slide, almost 600 feet long and 250 feet high, is being built as part of a sculpture that was part of the 2012 Olympic games location.

Once complete, the slide will be 178-m (584-ft) long and 76-m (249-ft) high, making it, according to the ArcelorMittal Orbit, the “world’s tallest and longest tunnel slide.” Riders will experience 12 twists and turns, including a tight corkscrew section called the “bettfeder,” which is German for “bedspring.” The slide ends with a 50-m (164-ft) straight stretch to the ground.

It is estimated that it will take about 40 seconds for people to descend the slide, with riders expected to hit speeds of up to 15 mph (24 km/h). On the way down, there will be dark sections, as well as points where it will be possible for riders to see out of transparent polycarbonate windows, providing brief views out over the Olympic Park and surrounding areas.

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Dragon to go to Mars in 2018

9:33 am

The competition heats up: Though no details have yet been released, SpaceX has announced through its twitter feed that they plan to send a Dragon to Mars by 2018.

This is not really a surprise, as rumors have been circulating literally for years of Musk’s Martian goals. Nor am I doubtful they can do it. What is important about this announcement is that it suggests that they are now confident that the delays for the first Falcon Heavy launch are mostly over, and that it will happen in the fall as presently planned. With this rocket they will have the launch capability to do a test flight to Mars.

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April 25, 2016 Zimmerman Space Show appearance

10:43 am

My appearance on the Space Show yesterday is now available as a podcast. I strongly recommend people listen to it, especially the first hour. During that section I compared at length the cost and practicality of the Falcon Heavy with SLS/Orion, and noted how badly Congress and Presidents from both parties have served the American people these past twenty years in mismanaging our aerospace industry.

David Livingston called it a rant, and criticized me for it during the show, but I think the time has come for more Americans to rage in horror at the foolishness and possible corruption of our elected leaders in Washington.

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A close look at Falcon 9’s reusable cost savings

10:33 am

Link here.

The analysis is interesting and thoughtful, though some of the negative comments quoted from a former NASA engineer only illustrate why NASA was unable to do this very well. Moreover, these comments from Arianespace’s chief suggest that Arianespace doesn’t understand basic economics.

Arianespace Chief Executive Stephane Israel, in an April 23 briefing at Europe’s Guiana Space Center here on the northeast coast of South America, said Europe’s launch sector can only guess at how much SpaceX will need to spend to refurbish its Falcon 9 first stages. Israel said European assessments of reusability have concluded that, to reap the full cost benefits, a partially reusable rocket would need to launch 35-40 times per year to maintain a sizable production facility while introducing reused hardware into the manifest.

…Israel’s argument, which he has made before, is that even if first stages can be recovered and refurbished in a cost-effective way, the launch rate needed for maximum cost savings – and hence price reductions to customers – is beyond Europe’s reach. The only nations today whose governments are launching sufficiently often to reach those rates are the United States and China, and even these government markets may be insufficient, in and of themselves, to close the business case.

The customer base is not static. If you lower the price, the customer base grows, a fact that Elon Musk understands and which has been driving his effort from day one.

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New smallsat rocket company obtains financing

9:59 am

The competition heats up: A new rocket company, Vector Space Systems, has announced that it has obtained seed money to begin the development of a new rocket for launch very small satellites.

Vector is designed to provide dedicated launches of very small spacecraft. The vehicle is capable of placing satellites weighing up to 45 kilograms into a basic low Earth orbit, and 25 kilograms into a standard sun synchronous orbit. Those launches will cost $2–3 million each, with the higher price reserved for “first class” launches reserved as little as three months in advance.

This rocket would compete with Virgin Galactic’s LauncherOne and Rocket Lab’s Electron for the smallsat and cubesat business.

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Problems at Stratolaunch?

9:39 am

In the heat of competition: Vulcan Aerospace, the company building the giant Stratolaunch airplane designed launch orbital rockets from its underbelly, does not yet have a rocket for this purpose.

Originally that rocket was to be built by SpaceX, but that partnership ended in 2012.

Stratolaunch then contracted out its rocket work to Orbital Sciences Corp. (now Orbital ATK). The company also contracted with Aerojet Rocketdyne for six RL10C-1 rocket engines with an option for six more for use in the launch vehicle’s third stage.

The agreement with Orbital ended without the production of a launch vehicle, with Beames saying the rocket was not economical. Stratolaunch officials said they were reassessing the project in light of the shift in the market recently toward smaller satellites.

In 2015, Beames said that Stratolaunch was examining more than 70 launch vehicles for use with the Stratolaunch aircraft. He indicated that the company might use multiple launch vehicles to serve different payload classes. Beames said the company would announce its launch vehicle strategy in fall 2015, but that time came and went with no announcement. [emphasis mine]

It is very worrisome for them to be hunting for a rocket at this point of design. I am reminded of Virgin Galactic and SpaceShipTwo, which changed engine designs midstream, causing them enormous engineering problems and delays.

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Orbital ATK negotiating lease for part of VAB

9:36 pm

The competition heats up: Orbital ATK has begun negotiations with NASA for possibly leasing part of the Vehicle Assembly Building (VAB) for use in connection with a military rocket.

Virginia-based Orbital ATK is one of two rocket companies that launch resupply missions to the International Space Station, but this deal would not involve those missions or that rocket, the company’s Antares. The Antares launches from NASA’s space port at Wallops Island, Va., carrying the Orbital ATK Cygnus capsule.

The new rocket that Orbital ATK hopes to develop and one day assemble in the VAB would be a medium- to heavy-lift rocket.The planned rocket currently referred to by the name the Air Force set for it, the Evolved Expendable Launch Vehicle-class rocket.

It sounds like Orbital ATK is putting together a bid to compete for the Air Force rocket contract, and needs to get a handle on the costs for using the VAB at Kennedy in order to make the offer credible.

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Largest jet engine ever test fired

9:31 am

The competition heats up: General Electric has completed the first test firing of the largest airplane jet engine ever built.

With a front fan spreading a full 11 ft (3.35 m), the GE9X is a world record holder and generates thrust in the order of 100,000 lb. To accommodate the aeronautical behemoth, the Peebles facility was recently upgraded with a larger air intake, extra fuel tanks to feed the giant engine, and high temperature gear to deal with the hotter, more efficient design.

GE says that the GE9X is currently undergoing its first Full Engine To Test (FETT). This is the next level of the test series, which began in 2011 at the component level, and marks the first test of the complete system, which comes only six months after the engine design was finalized. GE says that this relatively early testing was to ensure that the test data was available as soon as possible for the certification engines, which are scheduled to be installed in GE Aviation’s flying test bed for certification of flight testing in 2018.

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OneWeb satellite factory coming to Florida

9:00 am

The competition heats up: OneWeb officially announces its plan to build its satellite factory in Florida.

OneWeb Satellites LLC prepares to break ground on its new estimated $85 million high volume satellite manufacturing factory in Exploration Park, Florida. Announced during a ceremony with Florida Governor Rick Scott and OneWeb founder Greg Wyler, the factory near NASA’s Kennedy Space Center is set to open in 2017, with delivery of initial satellites later that year or early the next. OneWeb Satellites is a joint venture between OneWeb, a satellite based internet provider, and Airbus Defence and Space, the world’s second largest space company.

I think this news report of the press conference notes the most important aspect of this satellite factory, its assembly-line approach:

Typically, communications satellites take four to five months to assemble, Brian Holz, chief executive of OneWeb Satellites, a joint venture of OneWeb and Europe’s Airbus Group’s Defense and Space said during an event near the future location of the factory. “We’re going to build one in an eight-hour shift,” he said. He did not give details but said the factory would be highly automated.

If all goes right, they should begin launch satellites in large numbers within two years, which will mean a lot of additional launch business for the smallsat rocket industry.

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