Questions tagged [dragon]

SpaceX cargo capsule for lifting payloads to orbit. Launched on a Falcon 9 rocket. Use [dragon-v2] for the Crew Dragon version of this project.

Filter by
Sorted by
Tagged with
7
votes
1answer
94 views

What goes in the bottom of the Dragon structural dome?

The Dragon has a structural dome shaped like a truncated cone (A below) on a stubby cylinder (B). Q: Is the crew section entirely in the truncated cone, or is it split in two stories with the second ...
4
votes
1answer
168 views

What are these cartridges with holes on the Dragon trunk?

You can see them on the rim in a hexagonal pattern in the picture below. Also present in the latest version of the Dragon trunk, but less clearly than here. They alternate in color from nickel to ...
5
votes
1answer
176 views

How does the Dragon trunk separate from the Falcon second stage?

I've pored over the pictures and still I can't figure it out. I know the second stage separates from the first stage using positive force from pneumatic pushers. I also know that the payload ...
6
votes
1answer
101 views

Is the Falcon 9 second stage engine throttled down to limit maximum acceleration

Is the Falcon 9 second stage Merlin vacuum engine throttled down during its burn to limit the maximum acceleration experienced by the Dragon or Crew Dragon capsule? As the second stage consumes ...
7
votes
1answer
231 views

Do astronauts on the ISS ever secure unpressurized cargo with an EVA to then be brought inside through an airlock?

Spacex's Dragon and JAXA's HTV are currently the only vehicles that can bring unpressurized cargo in addition to the pressurized one inside the vehicle. In the odd event that the ISS urgently needs ...
6
votes
1answer
139 views

What is the specified procedure to follow if there is a fail to create an airtight seal during hard dock?

I was watching the docking process of Dragon to the ISS including both the "soft dock" process, which was then followed by the hard dock involving 2 sets of 6 locking mechanisms. I believe I'm ...
8
votes
1answer
271 views

What is this diagram shown during Dragon docking with the ISS?

While docking with the ISS, the live stream showed this diagram with a green line starting at the capsule and looping around the area of the ISS. It would sporadically change and loop around the ...
2
votes
0answers
24 views

How much do Dragon’s propellant tanks weigh?

I’m trying to figure out how much dragon xl might weigh, and I would like to approximate how much tank weight gets added per kilogram of extra propellant. I asked About how much do hydrazine/N2O4 ...
3
votes
2answers
66 views

About how much do hydrazine/N2O4 tanks weigh per kilogram of propellant

I am trying to do some back of the napkin math on the proposed SpaceX DragonXL to figure out how much extra fuel it needs versus the original dragon, but I don’t know how much parasitic weight from ...
12
votes
1answer
205 views

Why couldn't the (original) Dragon land in the Atlantic?

Some of the coverage of the last flight of an original Dragon freighter mentions that the coming Dragon 2 will be able to land in the Atlantic, with resulting advantages: Beginning with the CRS-21 ...
6
votes
1answer
233 views

Does Dragon have any timeframes during launch where there is not a planned survivable abort mode?

The space shuttle had many scenarios with combinations of SSMEs or SRB failures where there was no planned survivable abort available because of a variety of factors (aerodynamics, energy, g forces, ...
6
votes
0answers
113 views

How does the SpaceX Dragon nosecone separate?

SpaceX's Dragon uses a nosecone to protect the docking port during ascent. The nosecone seems very large. 1/3 of the capsule's height large. And yet, it separates while the second stage engine is ...
4
votes
1answer
129 views

Dragon capsule thrust requirements

SuperDraco engines installed inside Dragon capsules assume launch escape capability, propulsive landing, reaction control system and main propulsion. Launch escaping and propulsive landing seem to ...
1
vote
0answers
50 views

How do the chutes stay separate? [duplicate]

In the below picture the parachutes are spread out, but ordinarily drag would pull all the chutes to the same position directly behind the capsule. How is this spread achieved?
3
votes
0answers
44 views

Is there video from the Falcon second stage of the Dragon solar panels deploying?

We get video from the second stage of the Dragon leaving the second stage. And we get video from the Dragon of its solar panels deploying. But a cool view would be of the Dragon's solar panels ...
1
vote
0answers
78 views

SpaceX Avionics [closed]

Just wondering what are some avionics aboard the falcon 9 and heavy. also what are some avionics on the dragon? Just general avionics that play a pivotal role in space travel.
2
votes
0answers
61 views

Will a Cygnus and Dragon be on station at the same time in April 2019?

According to the launch schedule at the moment I looked (which is of course only a snapshot in time) there is a Cygnus mission (NG-11) scheduled for Apr 17, 2019. There is a SpaceX Dragon Cargo ...
6
votes
1answer
1k views

Crew Dragon SuperDraco Engine Covers

(Source: Nasa Spaceflight article) While looking at the new images of the upcoming crew dragon launch I noticed a distinct lack of holes in the part of the dragon the Engines are supposed to be in. ...
4
votes
1answer
186 views

How does SpaceX's Dragon get to the ISS?

How does SpaceX's Dragon capsule get to the ISS? Does Dragon use the onboard Draco thrusters in order to raise its orbit to the station or does the second stage of the Falcon 9 perform the majority of ...
7
votes
1answer
224 views

What is the circular item that fell off of the returning booster during the CRS-16 mission?

During reentry of the first stage booster on the Dragon Resupply Mission (CRS-16), there was a ring-looking item that floated away from the booster. I would imagine it is some sort of ice debris, but ...
-2
votes
1answer
435 views

Shape of Dragon Crew capsule affecting ballistic descent?

\ I I don't think anyone has the seen the actual dimensions of dragon version 2, but assuming it is what SpaceX will be using to take people to space, I think it will have issues regarding stability ...
1
vote
1answer
618 views

What if an ISS astronaut refused to leave the space station? [duplicate]

When a mission to the ISS ends and the astronauts/cosmonauts shall leave the ISS with the Soyuz/Dragon spacecraft, what if an astronaut refuses to enter the Soyuz? What if he/she wants to remain on ...
26
votes
1answer
5k views

Would this chair support astronaut during launch in Crew Dragon

Recently reporters were allowed to take pictures of Crew Dragon and the SpaceX flight suit. Among them is this picture: I was under the impression that: Chairs needed to be custom molded / adjusted ...
3
votes
0answers
88 views

What are the chances that the ISS transits the moon as seen from your house (or headquarters)?

In this answer I tried to do a simple probablistic estimate on the distribution of the ISS's ground track passes over Earth's equator. Recently there is a photo of the ISS passing over SpaceX ...
12
votes
1answer
306 views

How is Dragon-v2 prepared for being docked for months at ISS?

The Dragon spacecraft is being certified for manned spaceflight. If it's to replace Soyuz, though, it will have to serve as an escape pod for the crew. The current delivery missions are proving its ...
3
votes
1answer
446 views

Reuse statistics of SpaceX Dragon capsules?

The question about the rolled-up and deployable solar array How does ROSA unroll? (Roll Out Solar Array) begins: The upcoming SpaceX launch with the apparently first re-use of a dragon capsule will ...
7
votes
1answer
242 views

Why don't ISS supply missions use their full payload capacity?

I was reading a NASA study talking about the benefits of flying the Dragon spacecraft vs the Space Shuttle. The study mentions that both launch systems use only about 2/3 of their payload capacity ...
9
votes
1answer
369 views

Could Dragon 1.0 be used as an emergency Earth return vehicle

In a completely hypothetical scenario, say both of the Soyuz vehicles docked to the station were damaged/destroyed, but there was a Dragon 1.0 on the station left intact. Although i don't believe it ...
7
votes
1answer
455 views

When will they be landing Dragon retropropulsively?

I keep expecting SpaceX to start doing powered landings of the dragon, or at least tests. But to my knowledge they haven't even done a drop test yet. Does anyone know what their plans are in regards ...
8
votes
3answers
321 views

Where/how did the CRS-10 Dragon capsule “wait” before the 2nd, successful docking attempt?

After one halted attempt at docking with the ISS, the CRS-10 Dragon capsule successfully completed the maneuver. In the time between the two attempts, Dragon must have maintained some kind of orbit ...
4
votes
2answers
1k views

Have guidelines for red & green navigation light placement on spacecraft been established?

update: Cropped screen capture from SpaceX Demo-1 Crew Dragon Docking to ISS - Part 2 after about 00:25:00 in the video: I am curious if guidelines for the ...
2
votes
1answer
205 views

Can an ISS berthed vehicle remotely unberth?

The ISS has three (four?) types of docking ports. The Russian side has one standard with two types (active/passive?) and the US side has either a PMA (soon to be updated with the IDA to the NDS ...
5
votes
3answers
517 views

What prevents the current Dragon capsule being used for crew?

Hypothetically, why could the current Dragon not be used for carrying astronauts from space? Since there is always some research material in Dragon, I believe this vehicle has e.g. heat shields. Is ...
1
vote
1answer
113 views

What kind of maneuver Falcon9 & Dragon follows after separation

I was taking long-exposure shots of tonight's SpaceX launch and noticed these swirling like maneuvers when I zoomed-in: Are both stages making a roll or something? Separation Stage-1 Stage-2
2
votes
2answers
686 views

What is behind Dragon's Guidance, Navigation and Control bay door?

The timeline in the press kit for the upcoming CRS-9 SpaceX launch says at about 11 minutes after launch, "Dragon's solar arrays deploy", and at 2 hours 19 minutes, "Dragon's Guidance, Navigation and ...
3
votes
1answer
2k views

What is the structure of Falcon 9 and Dragon?

I mean detailed pics like this: If it's impossible to get this information please try to describe an approximate structure. Also provide additional info if you can. Which metal are used? What extra ...
7
votes
1answer
564 views

Will the 2018 Mars Dragon Lander be the largest lander on Mars to date?

Assuming the Dragon V2 will be the lander for SpaceX Mars mission launching in 2018, will it be the largest lander (either by weight or by size) that humans have put on Mars to date? Wikipedia has ...
12
votes
1answer
1k views

How does the landing accuracy of Dragon (under parachutes) compare to Soyuz?

The Dragon capsule landed yesterday, and I saw this picture of it: Historically, capsules had a rather large uncertainty when landing, especially with parachutes. This picture was obviously taken ...
3
votes
2answers
375 views

Can Red Dragon generate electrical power after a Mars landing, or will it rely only on battery power?

Red Dragon will presumably have to shed or re-stow solar arrays before any landing. What will be the source of electrical power after landing?
19
votes
4answers
1k views

What payload was expected for the 2018 Mars Dragon flight (“Red Dragon”)

SpaceX has long been planning to use Dragon capsules to carry objects anywhere in the Solar System. They have officially announced a 2018 launch to Mars. Specifically, the launch window is April-May ...
6
votes
1answer
258 views

Is the Dragon Mono-Stable?

Re-entry vehicles tend to be either mono-stable (eg soyuz) or bi-stable (apollo) which refers to the orientations in which they're aerodynamically stable. In at least one case, this has proved very ...
7
votes
1answer
431 views

Why is the Dragon small compared with the Falcon 9 LEO payload

According to wikipedia, the Falcon 9 1.0 had ca. 10t payload capacity to LEO. The Dragon has a 3.3t payload capacity to the ISS with a dry mass of 4.2t that leaves 2.5t unused lift capacity. Is this ...
6
votes
1answer
1k views

Is that Dragon's cargo exposed to space environment in this picture?

The lower section of Dragon, holding the solar panels, are ditched during descent. So, is Dragon carrying cargo in that section during ascent? Source of the image: Launch & Spacecraft Visit to ...
1
vote
1answer
301 views

Minimum spacecraft docking time

What's the absolute minimum time in which spacecraft docking can be achieved? EDIT: This question isn't so much about the time to match orbits as it is about the time it takes to maneuver into the ...
13
votes
3answers
1k views

Why hasn't Dragon been reused before CRS-11?

Given that SpaceX's Dragon has been designed to be reusable ("with minimal rework and fueling"), why hasn't it been, in fact, reused? We've had 6 CRS missions bringing Dragon to ISS and back home (...
10
votes
1answer
441 views

How much of SpaceX's Falcon 9 launch vehicle and Dragon capsule are 3D printed?

I know some of the components at SpaceX are manufactured using metal additive manufacturing (3D printing), but how much of the entire Falcon 9 launch vehicle or Dragon capsule is made up of printed ...
2
votes
1answer
871 views

How many Draco engines does Dragon 2/Crew Dragon possess?

I believe Dragon 2 has the same number of 400N Draco thrusters that Dragon 1 has, which is 18, but I have not seen any confirmation of this. Dragon 1 appears to have them arranged in 2 sets of 4, and ...
19
votes
4answers
3k views

Reason for different “cone angles” of different space capsules?

Here is the Cargo Dragon: And here is the Orion: The "cone" that orion makes has a large opening angle - perhaps about 70 degrees. Meanwhile, the Dragon is almost cylindrical - the opening angle is ...
12
votes
2answers
3k views

Why is Dragon the only spacecraft that is currently in use to not need a fairing for launch?

Dragon is the only spacecraft I know of currently in use that doesn't need a fairing for launch on top of a rocket. I know there are others in development or in testing like Dragon v2 and CST-100(not ...
8
votes
2answers
2k views

Who can now resupply the ISS?

There are 4 major spacecraft that can supply the ISS. Progress, Dragon, ATV, and Cygnus. Of these 4 spacecraft, only the ATV has not had an issue in the last 8 months. ATV has stated they will not ...