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A video of the return of Bresnik and Nespoli (see attachment)
credit: ISS Twitter
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ISS Section / Re: Expedition 53 Thread
« Last post by Lewis007 on Today at 07:47 AM »
A video of the change-of-command ceremony was posted on ISS's twitter page (see attachment).

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Commercial Space Flight General / Re: Rocket Lab launch schedule
« Last post by Salo on Today at 07:41 AM »
https://twitter.com/RocketLab/status/941925746838159361

Rocket Lab
@RocketLab
#StillTesting launch attempt is now targeted for early 2018. Yesterday's power fault has been resolved, but with only one day remaining in the launch window we've decided to preserve crew rest and come back for an attempt in the new year.

--------------------------

Well see you all in 2018 then and I hope it will be a better year for Rocket Lab....
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ESA Launchers - Ariane, Soyuz at CSG, Vega / Re: ESA Bulletins
« Last post by bolun on Today at 07:23 AM »
ESA Bulletin 171 (3rd quarter)

1 November 2017

http://www.esa.int/About_Us/ESA_Publications/ESA_Bulletin_171_3rd_quarter

Image credit: ESA
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External cargo: Space Debris Sensor, MISSE-FF, TSIS
As we have learned, MISSE-FF was planned, but wasn´t ready in time.
Now it has to wait for the next flight opprtunity.
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Roscosmos reported as recently as December 12 that this launch is not affected by the Fregat failure last month.

BTW, does anyone have the launch time for this one on December 26? Also, does S7's Space Transportation subsidiary have a dedicated website (since it looks like the Sea Launch one is already dead)?
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Quote
Dec. 15, 2017

Orion Parachute Tests Prove Out Complex System for Human Deep Space Missions

When NASA’s Orion spacecraft hurtles toward Earth’s surface during its return from deep-space missions, the capsule’s system of 11 parachutes will assemble itself in the air and slow the spacecraft from 300 mph to a relatively gentle 20 mph for splashdown in the Pacific Ocean in the span of about 10 minutes. As the astronauts inside descend toward the water on future missions, their lives will be hanging by a series of threads that have been thoroughly ruggedized, tested and validated to ensure the parachute-assisted end of Orion missions are a success.

Through a series of tests in the Arizona desert, the engineers refining Orion’s parachutes have made the road to certifying them for flights with astronauts look easy, including a successful qualification test Dec. 13 that evaluated a failure case in which only two of the systems three orange and white main parachutes deploy after several other parachutes in the system used to slow and stabilize Orion endure high aerodynamic stresses. But behind the scenes, engineers are working hard to understand and perfect the system that must be able to work across a broad range of potential environmental conditions and bring the crew home.

While Orion’s parachutes may look similar to those used during the Apollo-era to the untrained eye, engineers can’t simply take that parachute system and scale it up to accommodate Orion’s much larger size. Through testing and analysis, technicians have developed Orion’s parachutes to be lighter, better understood and more capable than Apollo’s. NASA has also been able to adjust the system as elements of the spacecraft, such as attachment points, have matured.

“Through our testing, we’ve addressed some known failures that can happen in complex parachute systems to make the system more reliable,” said Koki Machin, chief engineer for the system. “We built upon the strong foundation laid by Apollo engineers and figured out how to manage the stresses on the system during deployment more efficiently, decrease the mass of the parachutes by using high tech fabric materials rather than metal cables for the risers that attach the parachute to the spacecraft, and improve how we pack the parachute into Orion so they deploy more reliably.”

Orion’s parachute system is also incredibly complex. About 10 miles of Kevlar lines attach the spacecraft to the outer rim of nearly 12,000 square feet of parachute canopy material – over four times the average square footage of a house – and must not get tangled during deployment. In addition to the fabric parachutes themselves, there are cannon-like mortars that fire to release different parachutes. Embedded in several parachutes are fuses set to burn at specific times that ignite charges to push blades through bullet proof materials at precise moments, slowly unfurling the parachutes to continue the sequential phases of the deployment sequence. All of these elements must be developed to be reliable for the various angles, wind conditions and speeds in which Orion could land.

With the analysis capabilities that exist today and the historical data available, engineers have determined that approximately 20-25 tests, rather than the more than 100 performed during the Apollo era, will give them enough opportunities to find areas of weakness in Orion’s parachute system and fix them. After the three remaining final tests next year, the system will be qualified for missions with astronauts.

“There are things we can model with computers and those we can’t. We have to verify the latter through repeated system tests by dropping a test article out of a military aircraft from miles in altitude and pushing the parachutes to their various limits,” said CJ Johnson, project manager for the parachute system. “Lots of subtle changes can affect parachute performance and the testing we do helps us account for the broad range of possible environments the parachutes will have to operate in.”

Orion parachute engineers have also provided data and insight from the tests to NASA’s Commercial Crew Program partners. NASA has matured computer modeling of how the system works in various scenarios and helped partner companies understand certain elements of parachute systems, such as seams and joints, for example. In some cases, NASA’s work has provided enough information for the partners to reduce the need for some developmental parachute tests.

“Orion’s parachute system is an extremely lightweight, delicate collection of pieces that absolutely must act together simultaneously or it will fail,” said Machin. “It alone, among all the equipment on the crew module, must assemble itself in mid-air at a variety of possible velocities and orientations.”

Parachute testing is just one part of the vast expanse of work being performed across the country that enable humans to venture farther into space than ever before.

Last Updated: Dec. 15, 2017
Editor: Mark Garcia
Tags:  Commercial Crew, Orion Spacecraft

https://www.nasa.gov/feature/orion-parachute-tests-prove-out-complex-system-for-human-deep-space-missions

Photo 1 caption:

Quote
Two pilot parachutes pull out two main parachutes of the Orion spacecraft during a test Dec. 15, 2017.
Credits: U.S. Army

Photo 2 caption:

Quote
NASA is testing Orion’s parachutes to qualify the system for missions with astronauts.
Credits: U.S. Army
8
I have a question on pad size. Will the available safe area support a much bigger vehicle like New Armstrong?

Impossible to answer since we know almost nothing about New Armstrong.
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https://twitter.com/RocketLab/status/941925746838159361

Rocket Lab
@RocketLab
#StillTesting launch attempt is now targeted for early 2018. Yesterday's power fault has been resolved, but with only one day remaining in the launch window we've decided to preserve crew rest and come back for an attempt in the new year.

--------------------------

Well see you all in 2018 then and I hope it will be a better year for Rocket Lab....
10
I have a question on pad size. Will the available safe area support a much bigger vehicle like New Armstrong?
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