Dragon v2 (SpX-DM2) – Falcon 9 (B1058.1) – Kennedy LC-39A – 27.05.2020, 20:32 UTC

[Владимир]

Отстыковка Драгона 1 августа и приводнение 2 августа во сколько по UTC?

Отстыковка в 8pm ET 01.08, приводнение 3pm ET 02.08 (данные из твита), это соответственно 0 и 19 UTC 2 августа

[triage]

т.к. кое-где флеймят что рано, т.к. обещали в конце августа, хотя о начале августа говорили еще месяц назад.

https://spacenews.com/nasa-plans-early-august-return-of-crew-dragon-from-space-station/
NASA plans early August return of Crew Dragon from space station

by Jeff Foust — July 17, 2020
...
Those date are tentative, he said, and dependent on weather conditions at the splashdown sites. "Weather will drive the actual date. Stay tuned," he wrote.
...
At a June 24 briefing, Steve Stich, manager of NASA's commercial crew program, said the Crew Dragon would likely undock in early August.
...
That battery replacement is now complete, but Behnken and Cassidy will perform one more spacewalk July 21 to perform other work outside the station.
...

[TAU]

Мало того что РД-0120 оказались вялыми на фоне RS25 (а центральный водородный бак по сухой массе слишком тяжелый) что понадобился четвёртый и переносить на РН с челнока на который 4 не повесить... И терять 4 дорогих движка каждый раз (в нагрузку к четырем РД-170).

Терять 8!!!! движков против одного пустого бака и 0!!! движков у Шаттла (ТТУ посчитаем многоразовыми))))))

Так ещё и вектор тяги из-за этого сильно менять ещё теряя в эффективности тяги , при чем по мере выработки топлива (и все большему смещению центра масс к челноку ) все больше и больше.

Буран вышел сильно позже и очень сильно ущербней Шаттла даже если бы его довели до ума а до этого было ещё не близко

Злой какой.

А можно выставить и преимуществом: можно было на РН "Энергия" без "Бурана" пускать до 100 тонн произвольного груза.

[cross-track]

А можно выставить и преимуществом: можно было на РН "Энергия" без "Бурана" пускать до 100 тонн произвольного груза.

так один раз уже попытались пустить

[Veganin]

Где еще обсуждать Энергию, МТКК сверхдержав и водородные движки? Только здесь - в ветке пилотируемого Дракона.

[sas]

А можно выставить и преимуществом: можно было на РН "Энергия" без "Бурана" пускать до 100 тонн произвольного груза.

И кто видел этот груз, кроме Полюса, который предназначался для Энергии? Там вон 6 спутников глонасс хотели пускать, ахнуть пол-Воронежа вместо двух Протонов. Это значит, что не было НИЧЕГО!!! Построили автозавод, а ни дорог, ни сервисных центров, ни бензоколонок в стране нет. Плановая экономика, что хотите...

[cross-track]

Где еще обсуждать Энергию, МТКК сверхдержав и водородные движки? Только здесь - в ветке пилотируемого Дракона.

Да, это верно. Ждем августа)

[tnt22]

SpaceX Crew Dragon Flies Through Habitability Testing

 NASA Johnson

21 июл. 2020 г.

It is a "demonstration" mission, so the crew of the SpaceX Crew Dragon are demonstrating that the systems on this new commercial spaceship all work as designed while it's docked to the International Space Station.  Take a look inside while the Expedition 63 crew members verify that astronauts and cosmonauts can live, work, and sleep as planned when the vehicle is executing its mission in space.

Additional footage from the Habitability tests on July 8, 2020:
https://archive.org/details/jsc2020m000200-SpaceX_Crew_Dragon_Flies_Through_Habitability_Testing_b-roll

youtu.be/kw64FUpCNCA

(1:00)

[tnt22]

https://blogs.nasa.gov/spacestation/2020/07/22/crew-awaits-cargo-works-science-and-departure-following-spacewalk/

Crew Awaits Cargo, Works Science and Departure Following Spacewalk
Mark Garcia
Posted Jul 22, 2020 at 12:48 pm

... Behnken joined his fellow SpaceX Crew Dragon crewmate Doug Hurley and began packing for their return to Earth and splashdown in the Gulf of Mexico on Aug. 2.
...

Похоже, прогноз на Атлантику у Мыса не очень радует, раз решили сажать в залив...

[tnt22]

 Gavin - SpaceXFleet.com @SpaceXFleet 1 ч. назад

Here's a map of all the potential Dragon splashdown locations for the Demo-2 mission.

Scrollable map: http://bit.ly/2ZUVd9u




1 ч. назад

NASA/SpaceX have not yet officially announced which location will be used - highly dependant on the weather. Pensacola is looking most likely it seems.

[Старый]

Где еще обсуждать Энергию, МТКК сверхдержав и водородные движки? Только здесь - в ветке пилотируемого Дракона.

В ветке про китайский запуск к Марсу обсуждают была ли победа США в холодной войне...

[tnt22]

https://blogs.nasa.gov/spacestation/2020/07/24/two-astronauts-prep-for-homecoming-after-spacewalk-and-cargo-mission/

Two Astronauts Prep for Homecoming After Spacewalk and Cargo Mission
Mark Garcia
Posted Jul 24, 2020 at 12:05 pm

... Two NASA astronauts are also getting ready to return to Earth after a two-month stay in space.

...Flight Engineer Bob Behnken ... is now turning his attention to readying the SpaceX Crew Dragon vehicle that will return he and fellow NASA astronaut Doug Hurley to Earth at the beginning of August. They will undock from the Harmony module's international docking adapter on Aug. 1. The duo will splashdown on Aug. 2 ending NASA's first crewed mission aboard a commercial spacecraft.

Behnken and Hurley packed clothing, personal items and other gear today inside the Crew Dragon. The two astronauts also tried on a specialized suit to help their bodies adapt to the conditions of Earth's gravity upon their return.
...

[Старый]

Gavin - SpaceXFleet.com @SpaceXFleet 1 ч. назад

Here's a map of all the potential Dragon splashdown locations for the Demo-2 mission.

Scrollable map: http://bit.ly/2ZUVd9u




1 ч. назад

NASA/SpaceX have not yet officially announced which location will be used - highly dependant on the weather. Pensacola is looking most likely it seems.

Они не боятся делать районы посадки так близко к берегу? В случае промаха корабль может шмякнуться об сушу.

[tnt22]

 NASA @NASA 3 ч, назад

Mark your calendar!

We will provide live coverage the return of @AstroBehnken & @Astro_Doug to Earth in @SpaceX's Dragon "Endeavour" spacecraft. They're scheduled to leave the @Space_Station at 7:34pm ET Aug. 1 & splash down at 2:42pm ET Aug. 2: https://go.nasa.gov/2ZW8xKr

[tnt22]

 Gavin - SpaceXFleet.com @SpaceXFleet 8 мин. назад

It's happening! Crew Dragon recovery ship GO Navigator has departed from Port Canaveral and is heading to the Gulf of Mexico to support the Demo-2 splashdown.

GO Navigator will be positioned to support the 4 potential splashdown locations in the Gulf. (File photo: @Cygnusx112)





8 мин. назад

GO Searcher - the other Crew Dragon recovery ship - remains docked at Port Canaveral.

[tnt22]

https://www.nasa.gov/feature/top-10-things-to-know-for-nasa-s-spacex-demo-2-return

July 24, 2020

Top 10 Things to Know for NASA's SpaceX Demo-2 Return


NASA astronauts Doug Hurley, left, and Bob Behnken rehearse crew extraction from SpaceX's Crew Dragon, which will be used to carry humans to the International Space Station, on August 13, 2019 at the Trident Basin in Cape Canaveral, Florida.
Credits: NASA/Bill Ingalls


SpaceX's Crew Dragon is guided by four parachutes as it splashes down in the Atlantic on March 8, 2019, after the uncrewed spacecraft's return from the International Space Station on the Demo-1 mission.
Credits: NASA/Cory Huston

History was made May 30 when NASA astronauts Robert Behnken and Douglas Hurley launched from American soil in a commercially built and operated American crew spacecraft on its way to the International Space Station. The SpaceX Dragon Endeavour spacecraft lifted off on the company's Falcon 9 rocket from Launch Complex 39A at NASA's Kennedy Space Center in Florida and docked with the space station on May 31. Now, Behnken and Hurley are ready to return home in Endeavour for a splashdown off the coast of Florida, closing out a mission designed to test SpaceX's human spaceflight system, including launch, docking, splashdown, and recovery operations.

1. Where will Behnken and Hurley splash down?

NASA and SpaceX are capable of supporting seven splashdown sites off the coast of Florida for the return of Crew Dragon on its Demo-2 test flight with NASA astronauts Robert Behnken and Douglas Hurley from the International Space Station as part the agency's Commercial Crew Program. The seven potential splashdown sites for Crew Dragon are off the coasts of Pensacola, Tampa, Tallahassee, Panama City, Cape Canaveral, Daytona, and Jacksonville.

2. How will a splashdown location be chosen?

Splashdown locations are selected using defined priorities, starting with selecting a station departure date and time with the maximum number of return opportunities in geographically diverse locations to protect for weather changes. Teams also prioritize locations which require the shortest amount of time between undocking and splashdown based on orbital mechanics, and splashdown opportunities that occur in daylight hours.

Check out the Departure and Splashdown Criteria Fact Sheet for an in-depth look at selecting return locations, decision points during return, and detailed weather criteria.

3. How long will it take for Behnken and Hurley to return to Earth?

Return time for Behnken and Hurley will vary depending on the undock and splashdown opportunities chosen, with the primary opportunity taking between six and 30 hours.

4. What does the return look like? What are the major milestones?


SpaceX's Crew Dragon is loaded onto the company's recovery ship, Go Searcher, in the Atlantic Ocean, about 200 miles off Florida's east coast, on March 8, after returning from the International Space Station on the Demo-1 mission.
Credits: SpaceX

Crew Dragon's return home will start with undocking from the International Space Station. At the time of undock, Dragon Endeavour and its trunk weigh approximately 27,600 pounds. NASA will provide live coverage of the return from undocking all the way through splashdown.[/size]
There will be two very small engine burns immediately after hooks holding Crew Dragon in place retract to actually separate the spacecraft from the station. Once flying free, Dragon Endeavour will autonomously execute four departure burns to move the spaceship away from the space station and begin the flight home. Several hours later, one departure phasing burn, lasting about six minutes, puts Crew Dragon on the proper orbital path to line it up with the splashdown zone.[/size]
Shortly before the final deorbit burn, Crew Dragon will separates from its trunk, which will burn up in Earth's atmosphere. The spacecraft then executes the deorbit burn, which commits Crew Dragon to return and places it on an orbit with the proper trajectory for splashdown. After trunk separation and the deorbit burn are complete, the Crew Dragon capsule weighs approximately 21,200 pounds.

5. How fast will Dragon Endeavour be going when it re-enters the Earth's atmosphere? How hot will it get?

Crew Dragon will be traveling at orbital velocity prior to re-entry, moving at approximately 17,500 miles per hour. The maximum temperature it will experience on re-entry is approximately 3,500 degrees Fahrenheit. The re-entry creates a communications blackout between the spacecraft and Earth that is expected to last approximately six minutes.

6. When do the parachutes deploy?

Dragon Endeavour will has two sets of parachutes will that deploy once back inside Earth's atmosphere to slow down prior to splashdown. Two drogue parachutes will deploy at about 18,000 feet in altitude while Crew Dragon is moving approximately 350 miles per hour. Four main parachutes will deploy at about 6,000 feet in altitude while Crew Dragon is moving approximately 119 miles per hour.

7. Who recovers the crew and the Dragon Endeavour capsule from the water? What vehicles and personnel are involved?

For splashdown at any of the seven potential sites, SpaceX personnel will be on location to recover the capsule from the water. Two recovery ships, the Go Searcher and the Go Navigator, split locations between the Gulf of Mexico and the Atlantic Ocean off the coast of Florida. On either ship will be more than 40 personnel from SpaceX and NASA, made up of spacecraft engineers, trained water recovery experts, medical professionals, the ship's crew, NASA cargo experts, and others to assist in the recovery.


NASA astronaut Doug Hurley, along with teams from NASA and SpaceX, rehearse crew extraction from SpaceX's Crew Dragon, which will be used to carry humans to the International Space Station, on August 13, 2019 at the Trident Basin in Cape Canaveral, Florida.
Credits: NASA/Bill Ingalls

8. How long after splashdown until Behnken and Hurley are out of the capsule?

Immediately after splashdown has occurred, two fast boats with SpaceX personnel deploy from the main recovery ship. The first boat checks capsule integrity and tests the area around the Crew Dragon for the presence of any hypergolic propellant vapors. Once cleared, the personnel on the boats begin preparing the spaceship for recovery by the ship. The second fast boat is responsible for safing and recovering Crew Dragon's parachutes, which have at this point detached from the capsule and are in the water.

At this point the main recovery vessel can move in and begin to hoist the Crew Dragon capsule onto the main deck. Once the capsule is on the recovery vessel, it is moved to a stable location for the hatch to be opened for waiting medical professionals to conduct initial checks and assist Behnken and Hurley out of Dragon Endeavour.

This entire process is expected to take approximately 45 to 60 minutes, depending on spacecraft and sea state conditions.

9. Where do Behnken and Hurley go after they are out of the capsule?

Immediately after exiting the Crew Dragon capsule, Behnken and Hurley will be assisted into a medical area on the recovery ship for initial assessment. This is similar to procedures when welcoming long-duration crew members returning home on Soyuz in Kazakhstan.

After initial medical checks, Behnken and Hurley will be returned to shore either by traveling on the primary recovery ship or by helicopter. Helicopter returns from the recovery ship are the baseline for all splashdown zones except for the Cape Canaveral splashdown site, with travel times ranging from approximately 10 minutes to 80 minutes. The distance from shore will be variable depending on the splashdown location, ranging from approximately 22 nautical miles to 175 nautical miles.

Once returned to shore, both crew members will immediately board a waiting NASA plane to fly back to Ellington field in Houston.

10. What happens next?

Meanwhile, Dragon Endeavour will be returned back to the SpaceX Dragon Lair in Florida for inspection and processing. Teams will examine the data and performance of the spacecraft throughout the test flight to complete the certification of the system to fly operational missions for NASA's Commercial Crew and International Space Station Programs. The certification process is expected to take about six weeks. Following successful certification, the first operational mission will launch with Crew Dragon commander Michael Hopkins, pilot Victor Glover, and mission specialist Shannon Walker – all of NASA – along with Japan Aerospace Exploration Agency (JAXA) mission specialist Soichi Noguchi will launch on the Crew-1 mission from Launch Complex 39A at NASA's Kennedy Space Center in Florida. The four crew members will spend six months on the space station.

The launch is targeted for no earlier than late-September.

Last Updated: July 25, 2020
Editor: Anna Heiney

[tnt22]

https://www.nasa.gov/press-release/nasa-to-provide-coverage-of-astronauts-return-from-space-station-on-spacex-commercial

July 25, 2020
MEDIA ADVISORY M20-087

NASA to Provide Coverage of Astronauts' Return from Space Station on SpaceX Commercial Crew Test Flight


The International Space Station's two newest crew members, NASA astronauts Bob Behnken, left, and Doug Hurley, are pictured having just entered the orbiting lab shortly after arriving aboard the SpaceX Crew Dragon spacecraft.
Credits: NASA

NASA will provide live coverage of activities leading up to, during, and following the return of the agency's SpaceX Demo-2 test flight with the agency's astronauts Robert Behnken and Douglas Hurley from the International Space Station.

The duo arrived at the orbiting laboratory on May 31, following a successful launch on May 30 on a SpaceX Falcon 9 rocket from NASA's Kennedy Space Center in Florida.

NASA and SpaceX are targeting 7:34 p.m. EDT Saturday, Aug. 1, for undocking of the Dragon "Endeavour" spacecraft from the space station and 2:42 p.m. Sunday, Aug. 2, for splashdown, which will be the first return of a commercially built and operated American spacecraft carrying astronauts from the space station.

Coverage on NASA TV and the agency's website will begin at 9:10 a.m., Aug. 1, with a short farewell ceremony on station and resume at 5:15 p.m., with departure preparations through splashdown and recovery at one of seven targeted water landing zones in the Atlantic Ocean or Gulf of Mexico off the coast of Florida.

All media participation in news conferences and interviews will be remote; no media will be accommodated at any NASA site due to the ongoing COVID-19 pandemic. To participate in the briefings by phone or to request a remote interview with the crew members, reporters must contact the newsroom at NASA's Johnson Space Center in Houston at 281-483-5111 no later than two hours prior to each event.

NASA's SpaceX Demo-2 return coverage is as follows (all times Eastern):

Wednesday, July 29

• Approximately 6 p.m. (or one hour after Return Flight Readiness Review completion) – Return Flight Readiness Review briefing at Johnson, with the following participants:
  
  
  • NASA Administrator Jim Bridenstine
  • Steve Stich, manager, NASA's Commercial Crew Program
  • Joel Montalbano, manager, NASA's International Space Station Program
  • Benji Reed, director, crew mission management, SpaceX

A media phone bridge will be available for this event.

Friday, July 31

• 10:45 a.m. – Crew News Conference from the International Space Station, with the following participants:
  
  
  • NASA astronaut Bob Behnken
  • NASA astronaut Doug Hurley
  • NASA astronaut Chris Cassidy

A media phone bridge will be available for this event.

Saturday, Aug. 1

• 9:10 a.m. – SpaceX Dragon Demo-2 Farewell Ceremony aboard the International Space Station (ceremony begins about 9:15 a.m.)
• 5:15 p.m. – NASA TV undocking coverage begins for the 7:34 p.m. undocking (NASA Television will have continuous coverage from undocking to splashdown)

Sunday, Aug. 2

• 2:42 p.m. – Splashdown
• 5 p.m. – Administrator post-splashdown news conference at Johnson, with the following representatives:
  
  
  • NASA Administrator Jim Bridenstine
  • Commercial Crew Program representative
  • International Space Station representative
  • SpaceX representative
  • NASA Astronaut Office representative

A media phone bridge will be available for this event.

Tuesday, Aug. 4

• 4:30 p.m. – Demo-2 Crew News Conference from the Johnson Space Center, with the following participants
  
  
  • NASA astronaut Bob Behnken
  • NASA astronaut Doug Hurley

A media phone bridge will be available for this event.

These activities are a part of NASA's Commercial Crew Program, which has been working with the U.S. aerospace industry to launch astronauts on American rockets and spacecraft from American soil the International Space Station for the first time since 2011. This is SpaceX's final test flight and is providing data on the performance of the Falcon 9 rocket, Crew Dragon spacecraft and ground systems, as well as in-orbit, docking, splashdown and recovery operations.

The test flight also is helping NASA certify SpaceX's crew transportation system for regular flights carrying astronauts to and from the space station. SpaceX is readying the hardware for the first rotational mission, which would occur following NASA certification.

The goal of NASA's Commercial Crew Program is safe, reliable and cost-effective transportation to and from the International Space Station. This could allow for additional research time and increase the opportunity for discovery aboard humanity's testbed for exploration, including helping us prepare for human exploration of the Moon and Mars.

-end-

Last Updated: July 25, 2020
Editor: Sean Potter

[opinion]

Они не боятся делать районы посадки так близко к берегу? В случае промаха корабль может шмякнуться об сушу.

Так это же не смертельно. То же самое, что несрабатывание двигателей мягкой посадки на союзе.

[triage]

Они не боятся делать районы посадки так близко к берегу? В случае промаха корабль может шмякнуться об сушу.

Так это же не смертельно. То же самое, что несрабатывание двигателей мягкой посадки на союзе.

но кораблям по планам опять в космос лететь, в отличии от союза

[Старый]

Они не боятся делать районы посадки так близко к берегу? В случае промаха корабль может шмякнуться об сушу.

Так это же не смертельно. То же самое, что несрабатывание двигателей мягкой посадки на союзе.

Всётаки если можно перестраховаться то почему не перестраховаться? 
Опять же в случае посадки на сушу Дракон очевидно станет одноразовым. В смысле большениразовым.