Questions tagged [reuse]

Questions regarding the reuse of parts or equipment.

Filter by
Sorted by
Tagged with
2
votes
1answer
285 views

Will the Falcon Heavy make the first full fairing reuse ever?

The two side boosters will need some kind of aerodynamic protection, which could very much be recovered with the rocket in one piece. Will they be recovered and reused?
3
votes
1answer
317 views

Why are electrodynamic tethers not used to propel payloads beyond LEO?

Bringing spacecraft to higher orbits than LEO is quite expensive and as rocket reusability gains traction, it will probably get even more expensive when compared to a standard LEO deployment since the ...
14
votes
7answers
5k views

Would reusable rockets render the idea of space elevators useless? [closed]

With the expected advances in reusable rocket technology within the next decade, will constructing a space elevator become meaningless? Or will it still be way cheaper, safer and convenient to use ...
17
votes
2answers
2k views

Has SpaceX re-used a first stage twice yet?

SpaceX has re-used a first stage once, several times now. Has it re-used the same first stage twice yet? If not, has a particular mission been named that will be the first second re-use?
7
votes
1answer
363 views

Are there any viable hot structure orbital spacecraft designs capable of re-entry?

The current design of all orbital spacecraft capable of re-entry is cold-structure, using ablative materials, insulating tiles other approaches to keep the structure of the spacecraft relatively low ...
4
votes
0answers
145 views

Would the lunar rovers work (again) today? What would be needed? [duplicate]

3 Apollo missions brought their lunar rovers (Lunar Roving Vehicle) LRV with them, and they remained on the moon. Some of them have broken parts, and their batteries seem to be emtpy, according to ...
4
votes
2answers
381 views

Could refueled upper stages re-enter by retro-propulsion?

Let us suppose we manage to mine water on the Moon and return lots of it to LEO. Would it be hard to design an upper stage that could refuel at that depot, and uses that fuel to return to the surface ...
1
vote
1answer
211 views

Why can't spacecrafts create a complete heatshield cover around them during re-entry?

Like the Soyuz or Apollo spacecrafts, the crew module detaches itself from the service module during re-entry, is it possible to cover the total space-craft with a sleek-aerodynamic heat shield at the ...
5
votes
1answer
659 views

Were there problems with the Russian Buran space shuttle's reusability?

The Soviet space shuttle Buran launched and landed (unmanned, because it could) once very successfully. I would think it would be a very valuable industrial asset for the bankrupt Russian Republic ...
4
votes
1answer
258 views

What type of work goes into refurbishing a launch pad?

I read that launch pads need to be refurbished after every launch. What stuff on the pad takes damage? What is stopping them from covering the "stuff" in some sort of flame-retardant, explosion-proof ...
14
votes
3answers
4k views

Why didn't the space shuttle SRBs have wings and tires?

Why didn't the space shuttle solid rocket boosters have wings and tires to land the same way the orbiter lands? I don't think they haven't thought of that so there must be something that led them not ...
1
vote
0answers
497 views

How much fuel is necessary for 2nd stage of Falcon 9 rocket to land?

What is the fuel mass nedeed for the 2nd stage of Falcon 9 rocket to land, how much compared with its total fuel mass that it has? Or how much delta-v is necessary? Would it be able for Falcon 9 to ...
22
votes
3answers
3k views

Why did the grid fin of the CRS-8/SES 10 booster burn?

After a successful reentry burn of the stage, around 10 seconds after engine shutdown, one of the fins glows red, then begins to burn. My question is why would this burn after the stage already ...
8
votes
3answers
471 views

Are SpaceX competitors planning to create reusable vehicles

Although I know programs and visions of many space companies, I'd like to ask, does anybody knows if there is any competitor to SpaceX that wants to create a reusable rocket in the future? Let's ...
14
votes
1answer
1k views

What was the first time a “re-used booster” was used to put a payload into orbit?

In the excitement about SpaceX's Falcon recovery and relaunch development program, it's often forgotten in articles like this one that reusable spacecraft were in regular use far back in the 20th ...
6
votes
2answers
257 views

Will the SES-10 booster have a secondary mission goal of landing?

SpaceX is slated to launch the SES-10 this coming Thursday from LC-39A at KSC. This is widely seen a pretty major milestone, as this will be the first time a re-used booster will be used to put a ...
20
votes
2answers
2k views

What are the two bright objects separating from the Falcon 9?

On the recent Iridium 1 launch the separation of the first and second stages can be seen at T+3:50. In the following screenshot we see the second stage burning at the lower left of the frame and the ...
2
votes
1answer
584 views

While descending from orbit, can a blimp glider skip an atmosphere to shed speed?

While descending from orbit can the air be thin enough for a glider type blimp to slowly shed speed? Could a blimp skim the atmosphere around a planet, slowly decreasing air speed, without the need ...
7
votes
2answers
1k views

Why isn't someone building a fully reusable solid fuel rocket?

Solid rocket motors are so much simpler than liquid fueled. Why isn't e.g. SpaceX making a Falcon 9 equivalent with solid fuel only, and rescuing the segment cases with parachutes like the shuttle ...
1
vote
0answers
90 views

Was a satellite ever brought back to earth and then launched again? [duplicate]

Today I was reading a children's book (Ich hab einen Freund, der ist Astronaut ... my translation: "I have a friend who's an astronaut") to my son. On one page it claims that (translation by me): ...
9
votes
2answers
483 views

Does SpaceX recover and reuse tank pressurization helium?

Given that SpaceX have successfully landed several Falcon 9 boosters and that these vehicles use helium pressure-fed engines, when these vehicles land, their propellant tanks will presumably be mostly ...
-4
votes
3answers
663 views

Balloon Space Ladder [duplicate]

Using weather balloons pressurized to not to pop in a chain from the ground what is the highest altitude possible in a chain? You could up scale to use blimps but it is a balloon that can achieve ...
3
votes
0answers
68 views

Reusing Tanks and Rocket Engines from just beyond Geosynchronus Orbit [duplicate]

There are many Centaur upper stages and a few other objects in the junk yard orbit just beyond the geosynchronous orbit. Is there any reasons why this stuff could not be reused? There are cryogenic ...
1
vote
1answer
120 views

Impact shielding and damage control of a manned Interplanetary spacecraft [closed]

We've all seen pictures of micrometeorite and debris damage, and we've all heard the wisdom that at orbital speeds a paint chip is more lethal than a rifle round. We also know that having holes ...
29
votes
3answers
5k views

Did the Challenger SRBs fail due to design for reuse?

All that I know about the Challenger tragedy was that some o-rings failed in the reusable solid rocket boosters (SRBs) due to the low temperatures that day. I'm curious if such an accident would have ...
8
votes
3answers
812 views

What difficulties will be faced modifying the Falcon 9 FT, so to have better and easier landings of the 1st stage from a GTO mission?

What difficulties will be faced making modifications for the Falcon 9 FT rocket, so in this way to make smoother, better and easier landings of the first stage from a GTO mission? For example ...
29
votes
1answer
2k views

What work needs to be done before reusing Falcon 9?

In this article Elon Musk said that first stage of Falcon 9 which landed on the barge in April will be reused in June. Launching and landing wears material down, what parts need to be replaced and ...
5
votes
1answer
597 views

Did the Thaicomm-8 SpaceX landed first stage move after landing?

The SpaceX Falcon 9 mission that launched the Thaicomm-8 satellite to GTO orbit, landed hard on the OCISLY ASDS barge. One of the legs over extended into the aluminum crush core and did not retract. ...
5
votes
1answer
2k views

Why did the Thaicomm-8 SpaceX First stage come into port leaning to the side?

The SpaceX Falcon 9 (F9-0025) mission that launched the Thaicomm-8 satellite to GTO orbit recovered its first stage. Looking at pictures of it coming into Port Canaveral we see it listing to the ...
1
vote
2answers
559 views

Will F9H's middle core receive more than max damage?

After partaking in a GTO delivery, the successful re-entry and landing of a Falcon 9 booster was described by Elon Musk as follows: Most recent rocket took max damage, due to v high entry velocity. ...
4
votes
1answer
191 views

Does ISRO's RLV have a future manned spacecraft in mind?

The Indian Space Research Organization (ISRO) is currently testing a Reusable Launch Vehicle (RLV) in a technology demonstration program. Does this program have a future manned vehicle in mind? Or is ...
4
votes
4answers
834 views

Space Shuttle and SSME Servicing Procedures for Re-Launch

There's been a lot of discussion about SpaceX's ~30% price reduction from re-use of the first stage, which got me to wondering: why exactly was the Space Shuttle so expensive to service and prep for ...
2
votes
2answers
280 views

Sending the second stage into a parking orbit

Instead of deorbiting the second stage (particularly with Falcon Heavy) can they be sent into a common parking orbit, there must be a lot of useful materials, not to mention engines, that can be used ...
6
votes
2answers
416 views

Deluge system refresh rates

SpaceX has said they will take the recovered CRS-8 Falcon 9 first stage and test fire it 10 times at LC-39A. There is lots of discussion as to what that means. 10 full 2+ minute duration fires? 10 3 ...
7
votes
5answers
993 views

Would reusability affect the performance of a rocket engine compared to a single launch version of that rocket engine

Reusability of the rocket engines, which are the most expensive part of the rocket, is very important to keep low cost of the space rockets and in this way making reality the space programs considered ...
7
votes
2answers
746 views

Is there any possible way to reduce the cost of a manned mission to the Moon?

Say for instance if we were to build a base on the Moon, how could we possibly reduce the cost to send the parts and materials into space and off to the Moon.
9
votes
1answer
1k views

How many engine firings can a SpaceX Falcon handle?

For every Falcon 9 launch to date, the process has been: Each Merlin is test fired/acceptance fired at McGregor by themselves. The entire stage is test fired at McGregor. The entire stage is hot ...
18
votes
2answers
6k views

Falcon 9 fairings cost and reusability

I read that SpaceX is starting to work on fairings reusability. I couldn't find any information, so I would like to know more about them. In particular, I remember a quote from Musk saying that ...
2
votes
1answer
969 views

How was SpaceX able to keep the rocket from tipping over on the barge? [duplicate]

How was SpaceX able able to keep the rocket from tipping over on the barge once it landed? The barge looked like it was rocking quite a bit.
18
votes
4answers
4k views

SpaceX first stage landing: Why not use an elevated net above the landing platform to catch the rocket?

The rocket would keep same descent system as now (no parachute). But instead of landing on feet, it would have long grid fins on its top that would be catched by an elevated cable net. The previous ...
7
votes
3answers
1k views

What are the major challenges faced in designing a reusable heat shield?

With the overwhelming majority of heat shields being ablative and expendable in nature, it is fascinating to read about the Shuttle's TPS, its design and some of the problems that it faced. I believe ...
12
votes
1answer
1k views

How many 1st stage boosters will SpaceX settle for, for its LEO/GTO fleet?

It’s common knowledge that SpaceX goal is to create a fleet of spacecraft shuttling from Earth to Mars. One milestone they intend to achieve beforehand is having a fleet of 1st stage boosters ...
2
votes
1answer
368 views

How much fuel remains in a booster such as the one used for Jason-3

Building off of this question, I am curious as to how much (just a simple magnitude of order) propellant remains inside a booster to cause such an explosion? Considering cost, I would expect very ...
5
votes
1answer
397 views

When SpaceX hot fired the previously used ORBCOMM OG2 first stage, why did they suddenly switch from LC-39A to LC-40?

After the successful ORBCOMM OG2 mission on a Falcon 9 v1.1 Full Thrust (aka 1.2, aka 'just' Falcon 9) and the recovery of its first stage at LZ-1, SpaceX indicated it survived well, and trucked it to ...
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 (...
7
votes
2answers
473 views

Move landed rocket stage back to launch pad

How are SpaceX supposed to return the rocket's first stage to the launch pad/hangar for re-fitting after it has landed on a landing zone on land, or on a barge? Since they aren't landing on a launch ...
8
votes
2answers
485 views

Why did SpaceX use LC-13 as LZ-1?

SpaceX got access to LC-13, a former Atlas launch pad, to convert to LZ-1 (Landing Zone 1) for landing Falcon 9 first stages. What considerations went into the decision on using LC-13? Clearly the ...
9
votes
2answers
931 views

How close did the landed first stage of the Falcon 9 get to the X on the landing pad?

The pad at Landing Zone 1 (Former LC-13 at Cape Canaveral) has a big giant SpaceX logo consisting of a stylized X. SpaceNews reposted this picture of a guy on the X marks the spot, as distributed by ...
7
votes
2answers
614 views

How long does the F9 first stage remain hypersonic under control of its grid fins?

How long is the first stage of a landing Falcon 9 remain hypersonic, and under control of its grid fins? Specifically the hypersonic component is of interest. (Future second question will be, based ...
10
votes
0answers
367 views

Mathematics used for F9R flyback and landing [duplicate]

I was wondering if anyone may have useful links to the mathematics used by the F9R that allowed it to fly back to LZ-1 and land successfully. I'm hoping to find some papers that will give the broadest ...