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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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13 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 ...
13 votes
0 answers
340 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 ...
0 votes
1 answer
135 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 ...
2 votes
2 answers
249 views

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.
3 votes
0 answers
120 views

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 ...
7 votes
1 answer
194 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 ...
2 votes
0 answers
89 views

How did the recovery of the first crewed Crew Dragon water recover differ from previous recoveries of Crew and Cargo flavors?

The NASA video Expedition 63 Inflight with New York Times, Fox News, and USA Today - July 7, 2020 includes an interview with Fox News reporter Bill Hemmer, who asks: I am most interested in your ...
9 votes
1 answer
408 views

What is the speed of crew Dragon upon splashdown?

After reentry, what is the speed of the Dragon 2 capsule right before splashdown? What g-force is received upon splashdown? At the time of writing, this answer gives such information for many other ...
7 votes
2 answers
732 views

Why do the SpaceX suits require "drying" during the mission?

In the period when the Crew Dragon Demo-2 mission was initially docking with the ISS, before the hatches were open, one of the tasks was to "dry the suits". They reported on the status later, ...
14 votes
2 answers
514 views

Can Crew Dragon land with more people than it was launched with?

For example, Crew Dragon recently delivered two astronauts to ISS and there are at the moment 5 astronauts on board ISS. Assuming [pick your own disaster scenario] happens and all 5 astronauts had to ...
6 votes
1 answer
407 views

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 ...
12 votes
0 answers
244 views

Does Crew Dragon have a quick-release hatch?

After today's Crew Dragon launch was scrubbed, it took the pad ninjas at least ten minutes to open the hatch. One of the major criticisms of the Apollo Block 1 hatch design after the Apollo 1 fire ...
10 votes
1 answer
2k views

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?
3 votes
1 answer
309 views

What is the maximum apogee a Dragon spacecraft can reach?

What is the maximum apogee a Crew Dragon can reach in a highly elliptical orbit (by both the Falcon 9 and the Falcon Heavy)? There is a planned touristic mission in which the current apogee record of ...
3 votes
0 answers
157 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 ...
35 votes
3 answers
8k views

What is the primary reason for SpaceX motion to have astronauts board Dragon before fueling up the rocket?

News piece: NASA supports SpaceX plan to fuel rockets with astronauts on board. The move is criticized by many as unnecessarily dangerous. From what I understand though, it shouldn't be necessary - ...
1 vote
0 answers
53 views

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 ...
2 votes
0 answers
134 views

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,...
14 votes
1 answer
700 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
4 votes
0 answers
102 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 ...
5 votes
1 answer
162 views

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 ...
4 votes
2 answers
190 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 ...
4 votes
0 answers
833 views

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 ...
2 votes
1 answer
412 views

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 ...
5 votes
1 answer
1k views

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/...
7 votes
2 answers
713 views

Effects On ISS Orbital Mechanics Resulting From Added Mass Of Dragon Capsule Visit

Does the ISS require any type of orbital mechanics management once the Dragon capsule was confirmed with a positive airlock seal, and the mass of the spacecraft, 2 additional astronauts, and supplies ...
6 votes
1 answer
74 views

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/...
6 votes
0 answers
170 views

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 ...
2 votes
0 answers
81 views

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 ...
2 votes
2 answers
395 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?
6 votes
0 answers
123 views

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?
3 votes
0 answers
433 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 ...
1 vote
1 answer
478 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?
1 vote
1 answer
214 views

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 ...
2 votes
0 answers
197 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 ...
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 ...
2 votes
1 answer
118 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 ...
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 ...
6 votes
1 answer
279 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 ...
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 ...
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?
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 ...
14 votes
1 answer
668 views

Why do they make the astronauts sit in Crew Demo-2 for so long before launch?

I just tuned in to the live "broadcast" for the Crew Demo-2 and it looks like the astronauts sat down over an hour and a half ago, and there's still more than an hour to go. Why do (did) they have to ...
36 votes
1 answer
5k views

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
5 votes
0 answers
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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 ...
6 votes
0 answers
201 views

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/...
3 votes
0 answers
203 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" ...
3 votes
0 answers
105 views

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 ...
5 votes
1 answer
585 views

How do Crew Dragon's main parachutes deploy?

As far as I can tell, there are two distinct "doors" on Crew Dragon that house parachute-related equipment. In the below picture, I've outlined the upper door in yellow and the lower one in ...
7 votes
2 answers
598 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 ...