Category Archives: Spaceflight & Parabolic Flight

Virgin Galactic SpaceShipTwo test flight – Feb.22.2019

[ Updates:

12:14 pm EST: Max altitude is reportedly 294,000 feet, or 89.6 km, or 55.7 miles. [Update: 295,007 feet, or 89.9 km, or 55.87 miles.]

12:08 pm EST: The SpaceShipTwo VSS Unity is back safely on the ground after a second successful powered flight to the edge of space. Official apogee not yet announced. Unity definitely achieved 50+ miles, which crosses the USAF/NASA definition for the boundary altitude to space.

11:56 am EST: The motor has finished firing and the vehicle reached Mach 3.

11:55 am EST: Unity has been released and its motor is firing.

11:28 am EST: The WK2/SS2 combo should reach the launch altitude in about half an hour and release the SS2 for its powered test flight. There are three crew persons on the SS2 today:

VG also says Moses is “She’s an expert micro-gravity researcher who’s completed over 400 zero g parabolic flights in 4 different aircrafts.”

11:08 am EST: The WK2/SS2 combo has taken off:

WhiteKnightTwo VMS Eve and SpaceShipTwo VSS Unity take off from Mojave space port.

]

Virgin Galactic plans to fly SpaceShipTwo VSS Unity to the edge of space today. This will be the fifth rocket powered flight and the second to to go to 80+ kilometers in altitude. Currently, the schedule has the WhiteKnightTwo with the SS2 hung beneath it taking off from Mojave Air & Space Port at 8:00 am PST local time (11:00 noon EST).

Here is a diagram of the test:

Find live updates at Virgin Galactic (@virgingalactic) | Twitter.

Unity will be carrying several NASA sponsored research payloads that will take advantage of the several minutes of microgravity conditions.

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The Cosma Hypothesis: Implications of the Overview Effect

 

Video: Piloting the Virgin Galactic SpaceShipTwo

[ Update Feb.20: The test flight has been postponed due to weather issues:

Friday is likely the next target.

]

Virgin Galactic plans to send the SpaceShipTwo “VSS Unity” once again to the border of space on Wednesday morning in Mojave, California (see earlier posting). No target time posted yet for takeoff of the WhiteKnightTwo with the SS2 hung beneath. Winds could always lead to delays. Once the duo takes off, it takes about 45 minutes to reach the altitude for the drop of the SS2. Check updates at Virgin Galactic (@virgingalactic) | Twitter.

This new video released on Tuesday focuses on the pilots:

Here are tweets about the two pilots, Dave Mackay and Mike ‘Sooch’ Masucci:

Here’s a photo of the mating of the SS2  to the WhiteKnightTwo on Sunday:

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Brief Answers to the Big Questions – Stephen Hawking

Space access roundup – Feb.10.2019

A sampling of items related to traveling to and through space:

** Virgin Galactic pilots Mark ‘Forger’ Stucky and CJ Sturckow received Commercial Astronaut Wings from the FAA for flying to space on SpaceShipTwo:

The SpaceShipTwo motor from the flight was also given some special recognition:

Richard Branson never ceases to be optimistic on flight schedules: Richard Branson says he’ll fly to space by July – AFP/phys.org.

** Orbex Space in the UK shows a

completed engineering prototype of the Stage 2 rocket (the stage that will transit into orbital flight after launch) [that] is made from a specially-formulated lightweight carbon fibre and aluminium composite and includes the world’s largest 3-D printed rocket engine.

Orbex upperstage engineering prototype “#Prime, the completed stage 2 rocket and the world’s most efficient #smallsat launcher. It includes the world’s largest 3D printed rocket engine and designed to run on bio-propane, a #clean, #renewable energy source”.

More about the roll out:

The first stage booster will be reusable. Orbex has not shown a prototype of the booster or given details about its design.

Orbex is aiming for the first orbital launch in 2021.

Orbex has also obtained launch contracts with two companies:

** PLD Space of Spain also makes progress in development of a smallsat launcher with a reusable first stage booster:

PLD Space reusable first stage prototype.

Plus:

** Intro to NASA’s Launch Services Program, which hires commercial rockets to launch the agency’s unmanned payloads:

** Space elevator proponents continue to pursue this replacement for rockets:

From the magazine article:

While most engineered structures operate at a fraction of their material’s tensile strength—how far they can be pulled without breaking—most biological structures, such as tendons, operate near their max.  That’s because biological structures are constantly breaking themselves down and rebuilding, which allows for continual repair.

Space elevators won’t require such a strong cable if the cable also continually renews itself, Sun and Popescu reason. This feat could be achieved, they suggest, by developing a cable that’s constantly serviced by autonomous robots. Rather than waiting for breaks in the cable, these robots can dynamically break down and rebuild the cable to make sure it’s always in good working order. This cable would be segmented so that if a break occurred, it wouldn’t extend beyond a small site, note the researchers, who recently reported their solution on the pre-print website arXiv.

** SpaceX:

*** Latest pictures of StarHopper work underway in Texas:

*** More about Raptor engine tests:

*** More on Crew Dragon demo mission scedule -test flight with no one onboard is now set for no earlier than March 2: First unpiloted test flight of SpaceX Crew Dragon capsule reset for March 2 – Spaceflight Now

*** Other SpaceX related items:

** Rocket news included in the latest TMRO.tv space news report: SpaceX Engine Tests, ISRO Spaceflight, Lunar Craters and SpaceIL

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Space access roundup – Feb.6.2019

A sampling of space transportation related news and resource items:

** Ariane 5 launches two comm-sats on first mission of 2019:

Looks like a launch a month for Arianespace in 2019: Arianespace preps for first of up to 13 launches in French Guiana this year – Spaceflight Now

** Prometheus reusable engine – While Arianespace remains committed to single-use throwaway rockets, technology research into reusable hardware is happening. For example, here is the latest on the reusable Prometheus methane-fueled engine: Prometheus: Demonstrator of Future Engine passed its Definition Review – Ariane Group

The goal of the Prometheus demonstrator is to be able to build future liquid propellant engines in the 100 tons thrust class, for a cost ten times less than that involved in building an existing engine such as the Vulcain®2.

Rendering of a design for the reusable methane fueled Promethus engine.

The success of a technological challenge of this nature depends on a completely new design: over and above the change in the traditional Ariane propellant (switching from the liquid oxygen and hydrogen combination to liquid oxygen and methane), the demonstrator will entail major changes, including digitization of engine control and diagnostics. It also depends on the use of innovative design and production methods and tools, including construction using 3D printing in a connected factory environment.

** Speaking of reusable Ariane rockets: French auditor says Ariane 6 rocket too conventional to compete with SpaceX | Ars Technica

“This new launcher does not constitute a sustainable response in order to be competitive in a commercial market in stagnation,” the auditor’s report states. The Ariane 6 rocket design is too “cautious,” according to the report, relying on mostly traditional technologies.

** New Blue Origin video highlights the activities and future plans of the company:

** Momentus Water-Plasma propulsion for smallsat – While small satellites are growing into major sector of the space industry, cost-effective and technically practical in-space propulsion for small spacecraft remains a challenge, especially for those sized in the CubeSat scale of a few kilograms. The startup company Momentus offers propulsion modules that will attach to smallsats and and send them to the exact orbits after they are released from a rocket that takes them into space.

Momentus propulsion system uses water heated into a plasma state by microwaves. Water is obviously a safe fuel and this means that a spacecraft using it for propulsion will encounter fewer hurdles to integrating the craft into a launch system compared to using more energetic fuels.

Momentus Water-Plasma engine diagram.

Momentus just got its first contract with a $6M order from the German company Exolaunch to provide in-space propulsion for satellites that will be launched in 2020 and 2021:

There are longer term advantages to water propulsion as well. Water has been found to be abundant throughout the solar system. Water-based propulsion clearly offers significant advantages for in-space transportation with the Moon and asteroids providing filling-station services for spacecraft of all sizes.

** Commercial crew flight tests schedule: NASA, Partners Update Commercial Crew Launch Dates – Commercial Crew Program

The agency now is targeting March 2 for launch of SpaceX’s Crew Dragon on its uncrewed Demo-1 test flight. Boeing’s uncrewed Orbital Flight Test is targeted for launch no earlier than April.

These adjustments allow for completion of necessary hardware testing, data verification, remaining NASA and provider reviews, as well as training of flight controllers and mission managers.

** SpaceX

*** The first operational full-scale Raptor LOX/Methane engine was tested at the company’s McGregor, Texas facility last weekend:

From SpaceX Instagram and Elon Musk tweet:

Completed a two-second test fire of the Starship Raptor engine that hit 170 bar and ~116 metric tons of force – the highest thrust ever from a SpaceX engine and Raptor was at ~60% power.

Check out the rocket cycles diagrams illustrating the flow of propellants through rocket engines, including the stage combustion cycles used on the Raptor.

*** Latest on the design of the SpaceX next-gen space transport systems: In new Starship details, Musk reveals a more practical approach | Ars Technica

*** Work continues on the StarHopper and construction of the Boca Chica Beach launch facility near Brownsville, Texas: SpaceX’s Starship prototype is looking increasingly rocket-like as hop test pad expands – Teslarati.com

Some views of the activities there:

*** Spadre.com South Padre Island Information – Feb.5.2019 (opens with Raptor engine test video):

*** Spadre.com South Padre Island Information – Jan.30.2019

*** South Padre Island Info also offers a free webcam that includes views of the SpaceX site:

SPadre.com Starship Cam views the Spacex Starship, the Launch Pad, Isla Blanca Beach Park which is the closest possible launch viewing area, and the beach at South Padre Island Texas. Enjoy free continuous live streams and recordings of all upcoming launches, and Starship launch schedules and the latest SpaceX Boca Chica news. Launches will begin soon, watch all launches live on SPadre.com Starship Cam. For launch schedule and South Padre Island information visit: https://www.spadre.com Starship Cam hosted by South Padre Surf Company: https://www.southpadresurfcompany.com

Update: Latest on the SpaceX launch schedule: As Falcon Heavy celebrates anniversary, SpaceX manifest aligns – NASASpaceFlight.com.

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Space access roundup – Jan.29.2019

A sampling of items regarding rockets, spaceships, etc:

** China’s Long March 5, the country’s largest heavy lift rocket, is set to launch again this year : China Plans Return-to-Flight of Long March-5 Booster – LeonardDavid.com

An essential launcher for China’s future space station and Moon exploration plans is being readied for a July flight.

The third Long March-5 takeoff follows a mishap of this booster-class on July 2, 2017. An intensive investigation was carried out to identify why the rocket failed less than six minutes after liftoff.

China’s Xinhua news agency reports that Yang Baohua, vice president of the China Aerospace Science and Technology Corporation (CASC), that the cause of the failure had been found.

2019 will be another busy launch year for China: China will attempt 30-plus launches in 2019, including crucial Long March 5 missions – SpaceNews.com.

And Chinese commercial launch companies are ramping up as well: Chinese companies OneSpace and iSpace are preparing for first orbital launches – SpaceNews.com.

** The USAF’s X-37 reusable spaceplane is still in orbit after nearly a year and a half: U.S. Air Force Space Plane Wings Past 500 days of Earth Orbiting – LeonardDavid.com

The secretive mission of a U.S. Air Force X-37B mini-space plane has winged past 500 days of flight. This robotic drone is performing classified duties during the program’s fifth flight.

This mission – tagged as Orbital Test Vehicle (OTV-5) — was rocketed into Earth orbit on September 7, 2017 atop a SpaceX Falcon 9 booster from Launch Complex 39A at NASA’s Kennedy Space Center in Florida.

** Feb 19: An Arianespace Soyuz rocket will launch the first ten satellites of the OneWeb global broadband Internet constellation, which will eventually total over 900 satellites.

** Firefly Aerospace shows off an engine test:

** Vector Launch is testing as well:

** SpaceX:

*** A local TV news station reports on activity at the SpaceX launch facility near Brownsville, Texas:

*** The first Falcon Heavy commercial mission, and the second flight of the launch system, looks to happen in March and a third flight with mostly military payloads could happen in April: After government re-opened, SpaceX sought two Falcon Heavy permits | Ars Technica

Of potentially more interest are applications for two permits related to the launch of the next Falcon Heavy mission, Arabsat 6A, and the landing of two side boosters and the central core. These applications indicate that the launch of the Arabsat 6A mission will occur no earlier than March 7 from Kennedy Space Center’s Launch Complex 39A. This is consistent with existing estimates for the current launch date.

The landing permit also confirms that SpaceX will seek to land the two side boosters at its landing zone along the Florida coast—setting up for a repeat of the dramatic side-by-side landings during the inaugural Falcon Heavy test flight last February. The company will also attempt to land the center core on an ocean-based drone ship in the Atlantic Ocean about 1,000km offshore. During the first test flight of the Falcon Heavy rocket, SpaceX narrowly missed landing the center core.

There is a lot riding on these landings, as SpaceX intends to reuse both the side boosters and the center core for its third Falcon Heavy mission, Space Test Program-2. This flight could occur as early as April, although some slippage to the right seems likely, as a one-month turnaround of three boosters is ambitious. The payloads for this ride-share mission, bought by the US Air Force, include six weather research satellites, several demonstration missions, and academic projects.

See also:

*** Two Falcon 9 missions are set for February:

*** The Falcon 9 fairing catcher ship is traveling from the West Coast to Florida, where it will have more opportunities to use its net to snag nose-cone fairings ejected from the rockets during satellite launches: SpaceX fairing catcher Mr. Steven heads for Panama Canal after one last drop test – Teslarati.com

Iconic fairing recovery vessel Mr. Steven appears to have quietly departed for SpaceX’s Florida launch facilities a few days after completing (successfully or not) one final controlled fairing catch test in the Pacific Ocean.

While bittersweet for those that have closely followed the vessel’s development and many attempted Falcon fairing recoveries, this move should ultimately give Mr. Steven around three times as many opportunities to attempt fairing recoveries thanks to SpaceX’s significantly higher East Coast launch cadence.

For updates on Mr. Steven, check out: SpaceXFleet Updates (@SpaceXFleet) | Twitter.

** Other items:

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