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Questions tagged [dragon-v2]

SpaceX's second version of the Dragon spacecraft, also called "Crew Dragon". It is designed to carry humans.

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Eye Spy: Where are the other two (of six) vehicles docked to the ISS in this Maxar image (& what are they?)

I spy Crew Dragon, Starliner, & two Progress (?). Where are the rest? (Credit: https://www.maxar.com/maxar-intelligence/products/non-earth-imaging)
Anton Hengst's user avatar
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Does the SpaceX Crew Dragon need any modifications for circumlunar flight?

Does it need upgraded heat shields, communication gear, or anything else? Or can we just put it on a Falcon Heavy and do it now?
Abdullah is not an Amalekite's user avatar
14 votes
2 answers
2k views

If Crew Dragon can dock autonomously, why is there a crew aboard when they change from docking port to another?

I was watching the redocking the other night and they kept mentioning that it can redock autonomously. If so, why is the crew there? Is it there as a backup in case the autonomous system fails? Is ...
An Infamous Historian's user avatar
0 votes
1 answer
320 views

Why are the service modules on Crew Dragon and Starliner expended after every flight?

Why are the service modules on both Crew Dragon and Starliner expended after every flight? Clearly, shedding the mass of the service module reduces the amount of energy the heat shield needs to bleed ...
masospaghetti's user avatar
2 votes
2 answers
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Why didn't Crew 8 launch to an elliptical orbit with an apogee closer to the altitude of the space station?

Crew 8 launched to a 191x215km orbit (ref), but the ISS is orbiting at 425km (ref). I'm curious as to the reason why they didn't launch into, for example, a 191x425km orbit initially.
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3 votes
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What's the orbital inclination range Crew Dragons can reach if the Falcon 9 first stage is about to be recovered?

Inspiration4 was one of the very few orbital spaceflights in this century that didn't go to a space station. Yet, it reached an orbital inclination of 51.6°, same as the ISS. I believe this is due to ...
Old Man John's user avatar
7 votes
1 answer
204 views

Does SpaceX clean the outside of Dragon between flights?

We see that for the first stage, Falcon 9 boosters, SpaceX barely cleans the soot off. (Generally the soot comes from flying through the engine exhaust of boostback, reentry, and landing burns.) The ...
geoffc's user avatar
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Dragon as a Lifeboat for Soyuz

The only serious alternatives I have seen reported for the current Soyuz coolant problem are to either use the existing Soyuz, hopefully patching and testing it enough while attached to ISS to be able ...
manassehkatz-Moving 2 Codidact's user avatar
3 votes
0 answers
161 views

How does US crewed launch abort coverage "jump" the ocean in an instant?

As I understand things, the Commercial Crew Program stipulates full abort coverage from pad to orbit. An abort to the middle of the Atlantic ocean is understandably not acceptable. Watching the OFT-2 ...
BrendanLuke15's user avatar
1 vote
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How spontaneously can a spacecraft be deorbited [duplicate]

Currently the return of AX-1 has been rescheduled multiple days due to weather concerns in the landing area. How quickly could astronauts on the ISS evacuate to the ground if so required? Scenarios ...
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What is the most efficient method of landing for space capsules returning to earth? [closed]

I have read that the Russians don't land on water because they don't have access to a large warm-water coastline like the US. US has large swaths of land and water and most US capsules (Apollo, Dragon,...
user16734390's user avatar
4 votes
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103 views

With the new (Feb 2022) NASA SpaceX Crew Dragon contract extension, how much per flight?

NASA awarded flights 7, 8, and 9 for Crew Dragon in an extension of the existing contract, bringing the total value to \$3,490,872,904 . We know that in 2014 SpaceX was awarded about $2.6 billion to ...
PearsonArtPhoto's user avatar
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1 answer
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How does NASA count the order that people have entered space?

NASA has designated Matthias Maurer (crewmember of SpaceX CrewDragon 3) as the 600th person to fly in space. Leaving aside the question of whether those who flew with Branson and Bezos should be ...
GordonD's user avatar
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4 votes
2 answers
194 views

How long can astronauts wearing Dragon capsule suits walk around unconnected to water coolers?

At various moments in the NASA video NASA’s SpaceX Crew-3 Astronauts Launch to the Space Station astronauts are shown standing or walking or otherwise posing for the camera in their Dragon capsule ...
uhoh's user avatar
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What do "initiate dragon safe haven" and "close all centerline hatches" and "next two crossings" mean?

CNN's video Hear warning to ISS after Russia's dangerous missile test plays an audio clip of a voice communication from NASA Houston ground control to the ISS crew, with the message: ...we will need ...
uhoh's user avatar
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6 votes
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Why Dragon windows cannot be cleaned with hydrogen peroxide or acetone?

As you can see in the photo below, there is a small label which says: "Do not clean windows with hydrogen peroxide or acetone". Why is that and what can be used instead of those chemicals to ...
Bartosz Brożek's user avatar
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Modifying Starlink / Dragon for orbital communication

In this answer @uhoh notes: The Starlinks currently have three types of internet-related communication: downwards with customers fixed on the Earth's surface below the satellites (except an ...
Nathan's user avatar
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13 votes
0 answers
348 views

Which kinds of survival equipment does Crew Dragon have, in case of an emergency landing?

Soyuz spacecraft has various survival equipment for different cases of emergency landing. The cases include water landing, desert landing, snow winter landing (crews have special winter suits). They ...
Heopps's user avatar
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Dragon re-entry flight profile?

I was looking online for a profile depicting the Dragon re-entry similar to those showing the launch and first stage re-entry (e.g. https://www.elonx.net/wp-content/uploads/...
Peter - Reinstate Monica's user avatar
14 votes
1 answer
733 views

What is the heat shield refurbishment procedure for a crew Dragon capsule?

How, specifically, is the heat shield replaced or refurbished? More precisely... How do they know it will work for the next mission? :-P
Michael Stachowsky's user avatar
2 votes
2 answers
400 views

Why does the Crew Dragon seem to rely primarily on a low bandwidth downlink for voice communications?

What are the particular reasons that the Dragon Capsule is not communicating via Starlink, or that it seems that the audio and video downlinks from the Dragon Capsule are on separate streams?
Dagelf's user avatar
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10 votes
1 answer
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How does Spacex Crew Dragon capsule deorbit?

Soon the Inspiration 4 mission will launch and the crew will orbit the Earth for three days. How will the crew capsule then deorbit? Will it use the super/regular Draco thrusters?
moshevi's user avatar
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Other than safety qualifications, was there any technical/engineering reason why propulsive landing was cancelled for the DragonV2?

The Dragon V2 cannot perform a propulsive landing. But the Starship will be making propulsive landings. Why?
RNG's user avatar
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What are the G forces the Dragon 2 crew experience during splashdown? And what is the seat angle for the current configuration of 4 astronauts?

The Dragon 2 has a crew capacity of seven, but, NASA decided to change the specification for the angle of the ship’s seats due to concerns about the g-forces crew members might experience during ...
RNG's user avatar
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0 answers
438 views

Mass of New Shepard's Crew Capsule?

New Shepard's launch escape engine produces 310 kN (70,000 lbf for the metrically challenged). To accelerate away from a rocket booster moving at a max of 3 g, I'll assume the crew capsule should ...
user avatar
1 vote
1 answer
479 views

What are the quickdraws for around the torsos of the crew-1 crew?

From a NASA tweet we can see the crew exiting, with a pair of quickdraws around their chest: Oddly, everyone seems to get a different model: What are these used for?
Phil Frost's user avatar
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SpaceX Dragon: why no powered landing? [duplicate]

Can someone explain why SpaceX ditched their plans for powered landing on Dragon spacecraft? Was it fuel constraints? Or maybe the burden of testing and certifying the landing system for NASA? More ...
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2 votes
0 answers
214 views

SpaceX Dragon: How many fuel tanks?

I've read that Dragon carries 1380 kg of MMH + NTO propellant. This mass would be split among the various tanks, and I'm wondering---how many of them are there? Pictures from the manufacturing floor ...
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17 votes
3 answers
5k views

Evacuating the ISS but wait, there's only one Spacecraft?

I was doing some research regarding the Soyuz as I'm currently planning a summer project in which I would build a close replica of a Soyuz when the question popped into my mind, "What would ...
James Ervin's user avatar
2 votes
1 answer
119 views

Why might particulate matter be shaken loose during Crew Dragon Demo-1 launch?

Here is the picture of Expedition 58 crew members enter the Dragon 2 of Crew Dragon Demo-1 for the first time. They are wearing protective gear to avoid breathing particulate matter that may have ...
Brownie T's user avatar
1 vote
0 answers
83 views

Why does Falcon 9 launch with Crew Dragon solar panels facing down?

I noticed in video of the first crewed mission in August that Falcon 9 pitches down with the Dragon solar panels facing down. I'd been expecting the solar panels to be facing up, because sun. Does ...
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6 votes
1 answer
281 views

Why is the Orbital Velocity after SECO of Crew Dragon with 27K km/h lower than of ISS?

Crew Dragon after SECO: Orbital Vfelocity at 27,000km/h at 200km altitude (roughly 9-10min after liftoff). ISS Orbital Velocity at ca. 28,000 km/h at 400km altitude.iss_altitude,iss speed However from ...
Randy Welt's user avatar
5 votes
1 answer
106 views

Does the SpaceX Crew-1 commander have any command duties while docked at the station?

The SpaceX Crew-1 mission itself has a commander who is in charge, I suppose, during transit and landing. The ISS also has a commander. Does the commander of crew 1 have any command duties while ...
Michael Stachowsky's user avatar
21 votes
4 answers
3k views

Why is the SpaceX crew-1 mission more important than the previous one (demo-1)?

The previous one was also crewed (two crew) but it was called "demo" for some reason - despite taking astronauts to the ISS. How is the recent one different?
john1616's user avatar
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8 votes
1 answer
187 views

How many Crew Dragon spacecraft are SpaceX planning to operate?

NASA has bought six Crew Dragon flights and there is at least one private flight booked for next year. There are currently two flight-capable Crew Dragon spacecraft. Is SpaceX currently building ...
Dave Gremlin's user avatar
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What are these shiny wrist plates worn by astronauts in the SpaceX crew capsule

What are these shiny wrist plates worn by astronauts in the SpaceX crew capsule? screen shot from the NASA YouTube video Watch NASA's SpaceX Crew-1 Mission Arrive at the International Space Station
Bel Chavarria's user avatar
5 votes
0 answers
187 views

Why doesn't SpaceX know how long orbital maneuver burns will take?

While listening in on today's Crew Dragon 1 rendezvous, I noticed something interesting: the announced duration for the final coelliptic burn was "25 to 35 seconds". And this wasn't just a ...
Mark's user avatar
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What are the highlighted rectangular objects on the SpaceX's CRS 21 Dragon capsule?

What are the rectangular objects seemingly placed where otherwise Super Dracos would be - in this picture of the CRS 21 Dragon 2 capsule? Reference: https://twitter.com/SpaceX/status/...
PunchyRascal's user avatar
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206 views

In Crew Dragon do the astronauts feel like flying upside-down?

When looking at Crew Dragon flight paths diagrams I saw that for phasing burns and deorbit burns they don't use the side thrusters, as I would expect, but four thrusters mounted at the "top" ...
Florian F's user avatar
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Is there an official flight profile of the reentry of the Dragon spacecraft? [duplicate]

I wonder whether there's an official plan of the reentry and landing of either the former Dragon spacecraft or the Dragon V2/Crew Dragon, with details like altitudes, velocities, burn length and ...
Giovanni's user avatar
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0 answers
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Is Crew Dragon rated for any non-Spacex boosters?

The Spacex crew Dragon uses the Falcon 9 for its orbital launches, and is not set to ever use a different launcher. However, an uncrewed Dragon will probably launch on the Falcon Heavy, as is planned ...
Speedphoenix's user avatar
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4 votes
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Parachutes of Apollo and Crew Dragon capsules, what is different and what is the same?

The number of main chutes is different, Apollo three, Crew Dragon four. Both capsules used drogue and main chutes. Apollo had two drogue chutes with single stage reefing. Apollo used a two stage ...
Uwe's user avatar
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Camera cuts on live Dragon capsule recovery as astronauts put on stretcher

I noticed that, during the recovery of the astronauts of the first Dragon landing, the live streaming camera was placed beautifully on the ship and one viewpoint was used the entire time, except for a ...
Cort Ammon's user avatar
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1 answer
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Why Crew Dragon needs 18 hours between ISS separation and descent?

The Crew Dragon undocks from ISS but then it spend 18 hours in orbit before deorbit burn. From there, it takes less than one hour to come back to Earth. Why it needs 18 hours? Evven if they check all ...
Joe Jobs's user avatar
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Could the Crew Dragon be used to re-boost the ISS?

In an answer to a related question, Jörg W Mittag wrote the following: But more importantly, handling of the Superdracos is currently rather simple. They are safed after reaching orbit and then never ...
TooTea's user avatar
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7 votes
1 answer
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Can the SuperDraco engines aboard Crew Dragon be used to save the crew on splashdown if the chutes failed?

I've heard it several ways, so I should ask here. In the case of a main chute failure, are the SuperDracos able to attempt a contingency propulsive splashdown to save Dragon's crew? If this is in the ...
Anton Hengst's user avatar
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7 votes
2 answers
385 views

Does the Crew Dragon still have the launch abort fuel on board at landing?

The Crew dragon launches with a fairly large amount of fuel for its SuperDraco thrusters so that they can provide launch escape. If the launch goes OK is that fuel carried all the way to orbit and ...
Steve Linton's user avatar
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6 votes
1 answer
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What was the Crew Dragon reentry mass for the mission that landed August 2, 2020?

What was the Crew Dragon reentry and touchdown mass for the mission that landed August 2, 2020? (I found that Soyuz Descent Module has a reentry mass of 2850 kg.) See: http://www.braeunig.us/space/...
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4 votes
1 answer
254 views

What are the main stages of a Crew Dragon descent?

From answers to How much time it takes for the capsules to descend from ISS back down to Earth? I understand it takes 19 hours from the undocking from ISS until it touches the land. But what are the ...
Joe Jobs's user avatar
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7 votes
2 answers
606 views

Would Dragon reenter safely if the nose cone stayed open?

If its nose cone does not close before reentry, would the Dragon capsule be safe after reentry? The nose cone protects important components like the forward hatch and guidance systems. How damaged ...
Speedphoenix's user avatar
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