Questions tagged [booster]

A booster is a type of rocket used to assist in putting larger payloads into orbit. Use with the [rocket] tag any any other relevant launch vehicle tags

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How heavy can a fuel tank get before making it heavier is a liability under any circumstances?

This Question may bend the boundaries of this community a little, since it's mostly about hypothetical rockets that would never be built. Considering a filled fuel tank has to withstand a lot of ...
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What refractory material is used to line booster rockets?

I assume the shell/structure of a solid rocket booster requires protection from the ~3000°C+ combustion temperature of its fuel. What does/did NASA, Roscosmos, SpaceX, Ariane 5, etc use to line their ...
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Features seen on the Space Shuttle's solid booster; what does “LOADED” mean exactly?

The question Please explain the time reference shown in Shuttle launch engineering video links to the very cool video Ascent - Commemorating Shuttle. After about ...
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Why did Orbex choose propane as its fuel?

As a follow up to Are there liquid fueled rocket boosters having coaxial fuel/oxidizer tanks? and thinking about JCRM's answer pointing the issue of having a huge contact surface between inner and ...
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Are there liquid fueled rocket boosters having coaxial fuel/oxidizer tanks?

Reading this question, instead of stacking two tanks, are there boosters where tanks are coaxial, (like a thermos bottle) having a trussed or tridimensional structure between inner and outer tank? ...
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Why “strap-on” boosters, and how do other people say it?

This came up for me in the context of translating something into German. Everybody throws around terms like "strap-on boosters", although they aren't actually held on by straps. It's not even meant ...
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Why did the nozzles on the SRB's igniter initiator point toward the grain of the main igniter while the main igniter's nozzle pointed straight down?

How did the shuttle designers make those decisions? What made it a better decision to point the exhaust of the igniter initiator toward the main igniter's grain at an angle? What made it a better ...
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SpaxeX employees on the droneship when the booster lands?

SpaceX is doing a great job in recovering the boosters from its rockets. The Falcon Heavy has 3 boosters. 2 of which land at Cape Canaveral and 1 on a drone ship somewhere in the ocean. Are there ...
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When was the first strap-on booster used in spaceflight?

The first use of the term "strap-on" in Google Ngram viewer is in 1930 and presumably that wasn't about a booster being attached to a rocket for additional thrust at lift-off. When was a strap-on ...
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When does reusable lower rocket stages become benificial?

Can lower stages of current rockets be replaced to reusable and more efficient boosters with parachutes? Would reusable rocket stages save money?
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Can a first stage be a booster?

Wikipedia defines booster as"A booster rocket (or engine) is either the first stage of a multistage launch vehicle, or else a shorter-burning rocket used in parallel with longer-burning sustainer ...
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How is thrust transmitted from strap on boosters to the central core?

Strap on boosters of a lot of heavy launch vehicles seems to be attached with just a few "flimsy" struts. Here are few images for reference : Some of the possibilities: These support structures ...
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SRB ejection methods [duplicate]

While an empty GEM-60 is just under 2 tons, it occurred to me that additional thrust could be generated by jettisoning the empty boosters (or a large portion of them) BEHIND the Delta IV rather than ...
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Are side boosters sometimes angled even if they are symmetrically arranged?

When more than one side booster is added to a first stage to increase thrust and they are distributed uniformly around the core (as opposed to this and this) thrust does not seem to need to be angled. ...
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Why aren't airbreathing SRBs a thing?

To the best of my knowledge, all solid rocket boosters so far use a propellant that is a solid mixture of both the fuel and the oxidiser parts of the reaction. However, given that SRBs are generally ...
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SpaceX May 11, 2018 Falcon 9 launch had no boostback burn

One of my questions regarding the May 11 launch is Why no boostback burn? I assume that without such a burn, Stage One would continue on at about 8,000 km/hr in an EASTWARD direction, away from the ...
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Are any “strap-on” boosters held in place by actual straps?

Have there been any strap-on boosters that are attached to the main body of a rocket with actual straps (like bands of metal or something similar), as the name implies? If not, what's the origin of ...
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Why GSLV is so strange rocket? [duplicate]

GSLV looks strange: 1. It has liquid fuel boosters and solid fuel core, while all other launchers with boosters have solid fuel boosters 2. Its boosters finish to work after core, so actually they are ...
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Is there a point where boosters don't make sense, or are boosters always desirable to increase payload?

Consider a rocket using nuclear fuel, where the energy density is far higher. Let's stipulate that in an SSTO configuration, it's got a payload capacity like the Falcon Heavy. So, at that point, you ...
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What is used to connect the side boosters to the first stage?

For example, on the Falcon Heavy, the two side cores detached from the first stage but how are they attached and what mechanism is used to detach them?
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Are Falcon Heavy's side boosters aerodynamically detached?

During SpaceX Falcon Heavy test launch live stream, it's been said, just after boosters engines cutoff, the pneumatic separation system on the centre core will unlock the two side boosters and ...
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Would a hex-cluster of SpaceX boosters around a central booster lift a large payload into space?

I'm sure it's possible, but would it be wise to place a hex-cluster of SpaceX boosters around a central booster to get a very large payload, or one going to a very high orbit, into space? Maybe even ...
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Efficiency of 3 in line boosters of a shuttle? [closed]

What is the most efficient scenario for a total of 700 Newtons of thrust on three lined up boosters? If the air pressure for the payload booster isn't the same, can they make an efficient air ...
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Rockets with n-engines, for n = 1, 2, 3… [closed]

The question Astronomical ABCD…! suggests a corollary for SXSE. I'm looking for one example of a rocket with $n$ first-stage engines, for each $n$ for which you can think of an example for. It should ...
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Why did Falcon 9 boosters numbers skip B1027? What happened with it?

Looking at the list of Falcon 9 launches I noticed the booster numbers jump from B1026 to B1028. Anyone know what happened to B1027? Was it scrapped during manufacturing for some reason?
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Is spin-separation of boosters ever used?

One of cooler techniques in Kerbal Space Program is safe, easy and cheap separation of side boosters by sending the rocket into a short spin; upon separation centrifugal force ejects the boosters to ...
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How much brighter-than-expected could a spent rocket body become?

In a comment below an answer to the question What could have made a satellite appear to move side to side while near the horizon? I've said: Actually a satellite with flat surfaces - especially ...
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Could the solid boosters of SLS be replaced by reusable Falcon 9 first stages?

Is it feasible to redesign the Space Launch System to use a pair of reusable Falcon 9 first stages instead of the five-segment solid boosters now being developed? The reason would be to lower launch ...
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First launch of Long March-5 using 4 RP-1/LOX boosters. First use of RP-1/LOX LRBs?

The Long March 5's first launch used a LH2/LOX main engine with four RP-1/LOX Liquid Rocket Boosters (LRBs). Is this the first time that RP-1/LOX LRBs have been used in a successful launch to orbit? ...
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How does Atlas V maintain stable flight with asymmetric solid rocket boosters?

While watching a launch of an Atlas V, I couldn't help but notice that the boosters were positioned asymmetrically. There was one booster on one side of the rocket, and two boosters on the other side. ...
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What is the maximum error to land on the barge?

In SpaceX's successful landing on the barge today, April 8th, we see there is almost no room for error, at least from the video: Note that it appears that the width of the drone ship is only about ...
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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 ...
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Solid rocket boosters and 3d printing [duplicate]

My question is similar to one concerning 3d printing for enhnaced performance with hybrid rockets, but concerns using it to improve performance of solid chemical rockets by 3d Printing the solid ...
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SpaceX Falcon 9 landing leg deployment time

In the landing and landing attempts I've seen from the Falcon 9 first stage boosters, the landing legs are always deployed just a split second before landing, right when they are about to touch down. ...
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Why do some rockets jettison their boosters much after they are burned out?

For example: Japanese H-IIA rocket only jettisons its boosters 10 seconds after burnout, which I image would waste fuel as the spent boosters are like "dead-weight" dragging the rocket down. So why ...
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Do the propellant tanks of actual (not planned) expendable vehicles' upper stages have relief valves?

This question was inspired by the answer to this question. The answer, in part, states that overpressurization of propellant tanks is a cause of upper stage explosions, leading to orbital debris. ...
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For a typical Shuttle mission, how much solid fuel is leftover at SRB separation?

If I understand correctly, solid booster rockets never expend literally all their fuel before jetissoning, because the burn rate slows way down in the end and it would take too long to spend it all, ...
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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 ...
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When launching from the west coast of the USA (VAFB) where do lower stages land?

When launching from the east cost, I imagine all lower stages just crash/land in the ocean. However when launching the same direction from VAFB, the ocean is in the other direction. Do lower stages ...
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Why is the Russian approach to the aerodynamics of their rockets different?

Russian rockets look like this: They flare them out at the bottom. With their newest rocket, the Proton, the flared shape is gone but the boosters still have caps that angle in towards the main ...
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What happens to the Soyuz boosters that land in the Kazakhstan desert?

The video below mentions that Soyuz boosters consistently land a certain distance away from the Baikonur Cosmodrome, in deserted areas. What happens to those boosters? I'd sure like to have an ...
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Theoretical: Could a heavily modified airship enter low Earth orbit? [duplicate]

A high-altitude airship hitched to solid rocket boosters As the helium-filled airship reaches its ceiling, the boosters would initiate a launch sequences, thus sending the airship into orbit. ...
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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 (...
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Why do rockets separate from both its strap-on booster cores simultaneously instead of one at a time? (Delta IV Heavy, Falcon Heavy, Angara)

The basic idea of staged rocketry is to get rid of the mass of empty tanks et cetera as soon as possible during launch, isn't it? So you would ideally want to drop them one at a time as soon as they ...
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Why is there a “coasting” phase in some space launches?

During the PSLV (India's Polar Satellite Launch Vehicle) C24 launch on 4 April 2014, once stage 3 (PS3) had burned out, it wasn't immediately jettisoned, but instead there was a coasting phase for ...
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How fair is the claim that Shuttle boosters diameter is dictated by the railroad gauge?

There's a kind of urban legend that Space Shuttle boosters diameter could be larger only if was not limited because of the limitations imposed by the railroads and those are imposed by the railroad ...
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Is there a good chart, comparing the various Russian engines proposed for Soyuz (Booster) upgrades?

There are so many proposed Soyuz booster upgrades, I cannot keep them straight. I was wondering if there is a good comparison chart between the various proposed upgrades, including engine information....
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For a 3 booster rocket, why do they start with igniting the starboard booster, followed by the center and port?

In today's launch of the Delta IV heavy, it was stated that the starboard booster rocket would be ignited first, followed by the port and centre boosters. I would have thought this would give some ...