Questions tagged [reuse]

Questions regarding the reuse of parts or equipment.

Filter by
Sorted by
Tagged with
8
votes
1answer
755 views

Is it a problem that Falcon 9R landing legs are getting sizzling hot and catching flames during booster landing?

The videos of the test and live landings appear to show smoke and a few times flames coming from the landing legs. Will this be engineered out in later development or is it something else? Would it ...
10
votes
2answers
1k views

Why did the returning F9 first stage generate a triple sonic boom?

If you watch the landing footage of the Orbcomm OG2 mission, where the first stage of the F9 1.1 Full Thrust lands, just after it touches down, shuts down the engine, a triple boom is heard. Most ...
9
votes
3answers
1k views

Is it possible the Falcon Heavy Demo flight could be done with three previously flown boosters?

Thanks to their now recently official reusability capability, and after looking at the SpaceX flight manifest that showcases at least five new v1.1 FT before the Demo, it made me ponder: By the time ...
7
votes
1answer
1k views

How far from launchpad did Falcon 9's first stage go?

On December 21st, 2015 on the Orbcomm OG2 mission, Falcon 9's first stage landed 6 miles from its launchpad. What was the highest altitude reached by the first stage, and how far did it go from the ...
10
votes
1answer
2k views

Why the strange bands of soot of the landed F9 first stage?

If you look at the daylight photos of the landed first stage of the Orbcomm G2 Falcon 9 mission, there is all sorts of soot covering stuff in interesting patterns. What elements of the soot pattern ...
27
votes
4answers
3k views

Now that they can land a Falcon 9, what will they do with it?

As most of you, I am super stoked by the amazing success of SpaceX with their Falcon 9 first stage landing back on land! We also know that they have a huge backlog (over 50 flights) and are building ...
21
votes
2answers
9k views

How did the Falcon 9's 1st stage return back to Cape Canaveral?

SpaceX's original plan was landing the 1st stage to a landing ship, that waits far away from the launch site, and it was like this: But tonight, the rocket's first stage landed at Cape Canaveral. ...
7
votes
4answers
2k views

What is the hardest part of making spacecraft (mostly) reusable?

Why aren't more parts of spacecraft commonly reusable? As I'm looking at the Soyuz plans, the three parts don't seem all that different in terms of survivalibility. The orbital module resembles ...
5
votes
0answers
335 views

Are there any benefits on Venus compared to Earth with respect to reusing launch vehicles?

My assumptions around building up infrastructure for dealing with space launches from Venus assumes colonization based on the principles outlined by Geoffrey A. Landis of NASA in paper Colonization of ...
15
votes
4answers
3k views

What objects have been sent to space twice?

Just out of curiosity, and because we hopefully are at the dawn of reusable launchers, what items have been sent to orbit from Earth, then landed on Earth and sent back to orbit? The space shuttles ...
21
votes
3answers
4k views

How does SpaceX plan to achieve reusability of the Falcon 9 *second* stage?

Update 08 April 2017: Elon Musk tweeted an indication that they're revisiting the possibility of second stage recovery, so this question is again relevant, and the details of the new solution may be ...
8
votes
2answers
539 views

On which flights could SpaceX test Crew Dragon powered landing with complete flight profile?

For the booster stage of Falcon 9, test landings after a full flight profile are relatively frequent. SpaceX can try those on each CRS mission to the ISS, and in theory, any other launch that wouldn't ...
4
votes
1answer
328 views

What are the actual economics for the ULA reusability plan?

From this article, I gather that ULA is trying to build reusability into their next generation of launch vehicles. Their plan is summed up nicely in the picture: In the article, they seem to do some ...
4
votes
1answer
857 views

Could a rocket first stage be rapidly reusable after landing in freshwater?

Landing a first stage rocket (F9R) in the ocean has been stated that it is corrosive and will damage rocket components, thus making rapid reusability impossible or too expensive to repair each ...
21
votes
8answers
6k views

Why isn’t the “JRTI” barge larger?

The barge that SpaceX's Falcon 9 was trying to land on is creatively called "Just Read The Instructions"(hereafter known as JRTI). I've been told that SpaceX is using the barge to avoid a land based ...
9
votes
3answers
1k views

Did CRS-6 landing fail because the steering fins are ineffective at low speed?

Images of the second attempt to land the first stage of the Falcon 9 on a barge, following its successful launch of CRS-6, show how it suddenly swung more than its cold gas engines could compensate ...
14
votes
3answers
2k views

Could Falcon 9 splash down IN water?

Why don't they let the Falcon 9 splash down IN water, and then recover it? Wouldn't this reduce both fuel use & potential damage?
10
votes
3answers
2k views

Could SpaceX start testing to return the Falcon 9 first stage to land instead of water?

My thinking is that: The primary reason to try to land on a barge instead of land appears to be safety (Answers to this question). Ultimately, it looks like they want to return it to land. SpaceX ...
20
votes
7answers
17k views

How stable would a Falcon 9 first stage be after it has landed on a drone ship?

Presumably, the booster would be a very light, very tall tube (Most of the fuel spent) standing on 4 fairly small legs on a ship in the middle of the ocean. It would also still contain some LOX and ...
6
votes
3answers
404 views

Would it have taken much to steady SpaceX's CRS-6 returning stage so it landed alright?

Looking at this pretty awesome video of the CRS-6 first stage almost making it back to the barge, it sort of seems that if something could have steadied it just a bit, it would have been okay. ...
2
votes
1answer
1k views

How low can the single Merlin engine on the Falcon 9 first stage throttle?

As I understand it, the Merlin 1D engine on the Falcon 9 that is used to land the first stage, is fairly limited in how low it can throttle. This makes landing on the barge more difficult -- a ...
11
votes
2answers
1k views

Falcon 9R as SSTO

Seeing as the Falcon 9R first stage is close to being reusable, could it be the basis for an SSTO rocket? In other words, does it have enough performance to make it into orbit, and then boost back and ...
14
votes
2answers
3k views

Dragon V2: How many times can the spacecraft be reused? Is the spacecraft's heat shield reusable?

I read that the Boeing CST-100 could be reused up to 10 times, but the heat shield should be changed each time. Here are my questions: How many times can the Dragon V2 be reused? Will it be reused ...
8
votes
1answer
1k views

Could a rocket booster be refueled in space?

The F9R is planning to safely land on platforms, using propulsive landing, which requires that the rocket has extra fuel leftover from the primary launch mission, to be able to have a propulsive ...
3
votes
1answer
135 views

Which Falcon 9 (1.0 or 1.1) core has fuel cycled the most?

This question is related to reuse possibilities. One of the things that affects reuse is thermal cycling of the fuel tanks. (Consider how microfractures in the X-33 composite tank killed that project. ...
25
votes
3answers
5k views

How can the reusable Falcon 9 succeed when the reusable Space Shuttle failed?

Space Shuttle was designed to be partially reusable but was later shut down because it turned out to be very expensive to run compared to disposable spacecraft. Now Falcon 9 is suddenly reusable to a ...
15
votes
6answers
10k views

Why can the Falcon 9 be reused while the SLS cannot?

In reading about SLS, I learned that the reason they won't reuse their rocket is that the weight of the parachutes to enable recovery is too much of a sacrifice. How is the weight of the hardware and ...
2
votes
1answer
354 views

SpaceX: Recovery/reuse of upper stages - where would they land?

I know all about the plans for reusing the 1st stage, ocean landing vs. fly back, etc. But, Musk wants to make stages 2 and 3 reusable as well. Surely they would have far too much velocity and height ...
5
votes
1answer
320 views

Are the SpaceX boosters slated to return to their launch site or somewhere downrange?

The new SpaceX Heavy animation shows it being launched from LC-39A at Cape Canaveral, FL then all F9 cores returning to the Cape. Does SpaceX plan on doing a full ...
10
votes
5answers
5k views

Mathematics used for SpaceX first stage re-entry burn guidance?

I thought it would be fun to make a basic simulation of a first-stage fly-back of SpaceX's Falcon 9, but was wondering what mathematics is used to perform something like this. Looking at this page: ...
11
votes
1answer
445 views

Falcon 9 second stage impact on first stage trajectory

In this video, you can see the Falcon 9 first stage flying through the second stage's plume post-separation. I would assume that this would alter the first stage's trajectory -- potentially causing a ...
10
votes
2answers
2k views

Why have no reusable launch technologies been developed?

So we had the shuttle, and they obviously reused it many times, but it always needed new rockets to get it out of Earth's atmosphere. Why is it so difficult to create a spacecraft that is entirely ...
33
votes
6answers
20k views

Why did SpaceX attempt to land the booster on a barge instead of somewhere on land?

I understand the benefits of reusability for the rocket booster. But I don't understand why they're landing it on a barge. I've read tons of articles about this but not one has even hinted at an ...
8
votes
2answers
2k views

Would it not be easier for SpaceX to make their first stage only partly reusable?

Very excited about the upcoming test to land the first stage of the next Falcon 9 on an ocean platform. Elon Musk & Co. make it sound incredibly difficult though. I'm assuming that the first ...
66
votes
9answers
38k views

Why would SpaceX not use parachutes for the final descent of the first stage?

According to what I've read, SpaceX tried to use parachutes to recover the first stage of the Falcon 9, but it did not survive reentry. Now they plan to use 2 separate rocket burns to land: Reentry ...
18
votes
2answers
6k views

How will SpaceX achieve landing of the Falcon 9 first stage?

What mechanisms and technologies will be used to control the descent and movement of the falcon 9 rocket's booster stage on its way to the landing pad?
-2
votes
1answer
341 views

How can spacecraft be reusable for new missions? [closed]

When a spacecraft enters earth's atmosphere, it is totally destroyed and comes down as a single probe, so how can a spacecraft be reusable for new missions? The Soyuz spacecraft is launched on a ...
16
votes
4answers
2k views

Why aren't there any space tugs in use?

Ion thrusters are capable of providing the same amount of delta-V for far less fuel (e.g. Falcon 9 v1.1 second stage specific impulse is 340 seconds, while some ion-thrusters have a specific impulse ...
8
votes
1answer
587 views

Where will SpaceX take CRS-5 after it lands?

If SpaceX's plan to land the CRS-5 first stage on their Autonomous Spaceport Drone Ship goes perfectly, there will be a 50 (ish) meter rocket on a barge in the Atlantic. Leaving aside the interesting ...
2
votes
1answer
98 views

Can aerobrake maneuvers for entering orbit stress a ship over time?

Say you are in a happy future where mother ships travel between Earth and the Moon, or Mars, or Venus on regular runs, and are met by shuttles at each end of their voyages that transfer people, cargo, ...
10
votes
2answers
701 views

Through what mechanisms would SpaceX test and examine the returned CRS-5 first stage?

A significant minority of the users over at the /r/SpaceX Reddit community seem to be of the opinion that SpaceX will attempt to reuse the Falcon 9 CRS-5 first stage provided it lands on the downrange ...
4
votes
1answer
307 views

What survives the actual launch of a rocket

How much of the actual launch pad survives the heat and pressure of launch and is capable of being reusd?
7
votes
2answers
880 views

Has SpaceX considered using its abort system for cargo flights too?

If SpaceX starts reusing boosters, it has to be assumed there is an increased risk of catastrophic failure until proved otherwise. If my payload was going to be on top of one of those boosters, some ...
17
votes
1answer
928 views

What are the challenges of turning a rocket stage around and firing its engines into a supersonic wind?

So I went to the link in a recent question and discovered SpaceX turns its first stage around while it is going, what, several km/s in the upper atmosphere, restarts 3 of the engines and fires ...
15
votes
1answer
994 views

What is the value of the cross-track angle between the two designated CRS-4 first stage recovery zones?

For the SpaceX Falcon 9 launch on its Dragon/CRS-4 cargo delivery mission to the International Space Station, according to Spaceflight 101, two downrange safety zones have been identified: The SpX-...
23
votes
3answers
2k views

Were decommissioned Cold War missiles repurposed for peaceful spaceflight?

Those formerly on either side of the Iron Curtain can now admit that the Cold War had its plusses and minuses. The key minus, of course, is that the United States and the Soviet Union constructed ...
10
votes
1answer
1k views

Software to simulate / optimize ascent trajectory

I read the previous question on this site about astrodynamics software and I have tried STK (free version) and GMAT, but I could not find software to simulate and optimize a launch trajectory. Is ...
6
votes
1answer
352 views

Can the Orion be reused in space?

Orion is designed to land in the ocean and is therefor not reusable after landing (only some internal systems will be reused). But can Orion be reused while in space? What would the main issues be? ...
11
votes
3answers
3k views

How far downrange would a reusable Falcon 9 first stage land (without fly-back)?

Let's imagine a rocket like the Falcon 9 recovers its first stage via a soft landing, but doesn't attempt a return to the launchpad. For the sake of argument, let's imagine that there are no ...
10
votes
1answer
603 views

Numbers for Falcon 9 booster MECO scenarios?

I hoping to look at learn more about Main Engine Cut Off (MECO) for various scenarios. 5 quantities I want are: 1) Booster mass at lift off. 2) Booster mass at MECO 3) Booster velocity at MECO (...