Questions tagged [launch]

Questions regarding the takeoff or the liftoff phase of the flight of a rocket and the set of activities required for preparation of the launch vehicle leading to it.

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45 views

How much liquid oxygen is lost during a Space-X Crew Dragon launch abort?

The tanks of the Space-X rocket should be emptied after a launch abort. I assume the liquid oxygen is pumped back to the storage tanks at the launch pad. But how much oxygen is lost by evaporation? ...
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Real-Time Launch Statistics for the Demo-2 Mission

Is it possible to view the statistics such as pounds thrust and pressure of the Dragon Spacecraft's engines in real time. I'm not sure if Space-X or NASA has a part of their website dedicated to this, ...
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How Much Time Did We Have to “Duck and Cover” From an ICBM Launch Only 666 Miles Away? [closed]

During the Cuban Missile crisis I was stationed at Fort Wainwright, Alaska. As it had on many other occasions during the "cold war," our battle group began those infamous, "13 Days" by going on alert. ...
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Could any modern launch vehicle have put Ulysses in it's polar heliocentric without going to another planet first?

This answer to Why aren't satellites launched into a Polar LEO to get into Polar Heliocentric Orbit? leaves me wondering if it could be done today without the trip to Jupiter. Could a replica of the ...
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Was there a rocket launched to space with Japanese manga characters painted on it?

In How common is it to dedicate rocket launches to popular causes? I mentioned a launch for which I could not remember the details. I'd seen photos of a rocket, Japanese I believe, that would be ...
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How common is it to dedicate rocket launches to popular causes?

The BBC's Space Plane: Mysterious US military aircraft launches says: The launch was dedicated to front line workers and those affected by the pandemic. A message including the words "America ...
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Why were hot-stick downmoding to CSS, and the ability to use CSS for some control axes but not others, disabled during space-shuttle powered flight?

During ascent, if need be, a space shuttle’s flight controls could be switched from the normal, automatic control mode over to manual1 control (known as control-stick steering, or CSS), allowing the ...
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1answer
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Did any of the Space Shuttle RCS covers ever stay on?

This dashcam video of the STS-133 launch shows some sort of plastic bag looking objects that blow off the nose of the shuttle in the first few seconds after liftoff. This answer says they are the RCS ...
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Does any first-person video of a rocket launch exist?

I'm trying to find a good depiction of what it looks like to pass out of the atmosphere and watch blue skies transition to a starfield. What would be ideal is video looking out the window of a manned ...
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Have any satellites been lost or damaged on their way to the launch site (ground/sea transport)?

On our sister site Travel Stack Exchange, someone asked about carrying a cubesat on a plane in hand luggage and is worried about damage or loss (or not being allowed on the plane). Several answers ...
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Are rocket tanks being filled up until the last seconds before liftoff?

In rocket launch videos, we often observe liquid propellant rocket engines running at full thrust for several seconds before actual liftoff. We understand that liquid propellant rockets consume a ...
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Are core stages going to start falling unpredictably from orbit somewhat regularly now?

Spaceflight Now's U.S. military tracking unguided re-entry of large Chinese rocket includes the following: In the case of the Long March 5B, the core stage delivered its payload — a prototype ...
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Why isn't the Falcon 9 first stage severely damaged by the blast of the second stage following separation?

When the Falcon 9 experiences stage separation, why isn't the first stage severely damaged by the blast of the second stage? When separation occurs, there seems to be some mechanical force to push ...
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What is the farthest distance a failed rocket has landed from its launch site?

What is the greatest distance from its launch site that a failed rocket (or its debris) has landed? Failures only. This excludes surface-to-surface or surface-to-air missiles, which are intended to ...
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1answer
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If the Earth spun clockwise, would Florida have still satisfied the requirements for the US launch center in the 1960's?

In a comment under the question If the Earth spun clockwise, how would that affect Space Exploration? I wrote: Kennedy Space Center would be a lot closer to JPL; not sure what all happens with the ...
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Why do space rockets not start from an angle? Why go straight up? [duplicate]

I know that they used to have this idea, back in the day, of a "space gun" to fire somebody into space, and I understand why that was not safe or practical/feasible. However, once they had come up ...
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1answer
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Query on movement of space shuttle during lift off: Three examples

I have a small query here on the three different movements that I perceived after looking at videos during take off of Challenger (1986), Columbia (2003) and Atlantis (2010). Challenger (1986): ...
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How many stages were used to put Iran's satellite NOUR 01 (45529) into its orbit?

Fox News' Iran-launched military satellite entered Earth's orbit, US Space Command announces says: “Iran’s first military satellite, Noor, was launched this morning from central Iran in two stages. ...
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538 views

Which kind of launch vehicle has put the most total payload mass in space?

Examples of "kinds of launch vehicles" include Ariane 5, Electron, Pegasus, Falcon 9, Space Shuttle, Saturn V, etc.; small variations shouldn't be counted as separate. Question: Which kind of launch ...
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What makes SpaceX's Starship so cheap?

Elon Musk estimates that a Starship launch could drop to as low as $2 million. A Falcon 9 launch costs $50 million (when reused). What makes such a huge price difference? Will it use a different ...
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How and/or why did Elon Musk mistweet Roadster's C3 so badly?

In this answer to How close would the Tesla Roadster with Starman have to get to Earth in order to become attracted and fall on Earth? I just wrote: When Roadster was launched from Earth Elon Musk ...
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How much of the Apollo gantry, tower, and pad were destroyed on each launch? How much could be reused?

I have often seen various videos showing the huge fireball beneath a Saturn rocket launching. But I have not seen video or photos of the aftermath. Was the gantry, ...
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“Are we there yet?” (45th Space Wing's goal of being able to support 48 launches per year from Cape Canaveral)

This answer to What does “That's how we drive to 48!” mean? begins "drive to 48" refers to the 45th Space Wing's goal of being able to support 48 launches per year from Cape Canaveral. Has the ...
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1answer
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How are satellites, rocket launches and other space programs affecting the earth’s rotation? How will it be affecting living beings?

Want to know the effects of the active satellite, rocket launches and space programs that affect earth rotation? how? And their effects on living beings due to effect in earth rotation?
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During ascent, can SPACE-X ever be seen from Long Island, NY?

At night I have seen Space Shuttles' engine exhaust from Long Island NY, in the southeast sky 7 minutes after liftoff from the Cape. Does Space-X ever launch in a direction that it can be seen from ...
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Launch options for a hobbyist cubesat builder who's not rich? [closed]

For a while now I've been waning to launch a satellite into space, making the satellite should be simple enough, I have some experience with Arduino and coding in general. but what I don't have is any ...
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584 views

Rocket to launch 8 cubesat to LEO at an equidistant distance

I am working on a project, which consists of the launch of 8 cubesat 1U to LEO (Low Earth Orbit) and I started working on the launch part, the idea of ​​the project is to be as cheap as possible, the ...
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154 views

How is the water from a launchpad recovered? (If it is)

Knowing that the water on a launch is used for both noise suppression and surface cooling, do they recover the water that isn’t evaporated by the launch to use again? And if they do, how so?
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Does the low gravity on Moon eliminate the need for a launch pad/flame trench for a reusable rocket launch?

I'm new to rocket science and I learned how the rockets do not reach full thrust immediately and isn't really stable for the initial couple of seconds - hence the need for "launch clamps" and a ...
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1answer
194 views

How does Indonesia's development and test vehicle work? Could something like this reach space or even orbit when scaled up?

Phys.org's Blast off: space minnow Indonesia eyes celestial success says It's a very long way from a Mission Control in Houston, but the Southeast Asian archipelago's answer to NASA has big hopes ...
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189 views

Will SpaceX Starship have launch abort system? [duplicate]

Since future SpaceX Starship is planned as long duration passenger spacecraft for multiplanetary transport will it have launch abort system? Also how is crew evacuation planned during interplanetary ...
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Looking for ICS information at common launch facilities

I'm doing some research on cyber threats to launch facilities, such as those against industrial control systems leveraged by a typical launch service provider. Details of which types of systems are ...
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If the ISS had an emergency, how long would it take to get a rocket to it?

If there was an urgent need to launch a rocket to the ISS, how long would it take to have a rocket ready to launch? I am trying to understand what factors take up the time to prepare for a rocket ...
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Will SpaceX use a special launch maneuver for the SAOCOM 1B mission?

Teslarati's SpaceX sets date for first Florida launch of its kind in more than half a century explains that something different will happen. For those that want to read the article first, I've used ...
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1answer
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Would wind shear or other atmospheric conditions delay a rocket launch FROM the surface of Mars?

On earth we have launch windows because of this and constant weather monitoring is needed right up until launch. Would this be required on a return trip from Mars given that the speed of the wind on ...
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Why do panels fall off of Arianes 1-4 on launch? [duplicate]

I hope this isn't a duplicate. In earlier Ariane rockets, there's a lot of panels which seem to fall off of the interstage immediately upon liftoff, exposing a highly reflective surface. Source: ...
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1answer
133 views

Can I push the atmosphere out of the way?

The problem with virtually all methods of giving a launch vehicle velocity before launch is the atmosphere. The higher the velocity, the worse the drag. In the comments to a recent question, someone ...
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4k views

What are the biggest challenges for high altitude rail-gun launch systems?

Use a maglev railgun for initial acceleration - in a new, hyperbolic tunnel facing eastward - this exits from the burrowed -undergrade- track to Equadors' Mt. Chimborazo peak - (a mountaintop both 6 ...
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What would a human rocket be like to launch a human off Mimas?

In a comment on Is there a self-rounding celestial body from which an Olympian could jump into space? @jpa made a modest proposal. What if we stacked a bunch of athletes on top of each other and ...
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5answers
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Non-orbital takeoff and landing?

I know it is a naive question, but somehow I couldn't find where it is answered here earlier. There have been a number of questions and answers detailing how spacecraft need to achieve high orbital ...
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Cubesat/Nanosat dispensers/deployers costs

I’ m looking for informations about dispensers/deployers equipement costs and associated launch costs, espacially for 12U configurations and over. I’ve got price information on Tyvak 12U Deployer in a ...
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6k views

Advantages of launching very large rocket while submerged, buoyant, in a body of water

I vaguely remember reading about some supposed advantages of launching very large rockets (Saturn size and larger) from underwater in an ocean or similar large body of water. I was recently reminded ...
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Why does launching east result in an orbital inclination equal to the latitude of the launch site?

As mentioned briefly in this answer and this Everyday Astronaut video: And just as a reference, if you launched straight east out of Kennedy Space Center, you'd be on a 28.6° inclination which you ...
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How are rocket launches scheduled?

With all the satellites and other objects already in space; how exactly are launches scheduled and coordinated? Is there some kind of clearinghouse? How do the mega constellations affect the ...
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196 views

Cost of launch unrelated to cost of building rocket

ULA CEO Tory Bruno said long time ago that only 1/2 cost of orbital launch is cost of building of rocket. SpaceX never denied this. F9R block 5 total cost of launch can be about 60-80 million per ...
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How high will the Crew Dragon capsule get during the In-Flight Abort?

During the In-Flight Abort test (IFA), the Crew Dragon capsule will pull away from the Falcon 9 rocket when the rocket is undergoing maximum aerodynamic stress. At that time, it will still be going ...
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What does S represent in Chris Hadfield's D = ½ ρ v² S?

Retired test pilot, CSA astronaut and ISS Commander Chris Hadfield's new Master Class advertisement video Chris Hadfield Teaches Space Exploration - Official Trailer - MasterClass is heavily edited ...
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What is the white vapor seen immediately prior to and during the early part of the launch? [duplicate]

As most modern rockets rest on the pad much white vapor is seen. Is this propellant being vented or condensation from the surrounding air due to the extreme cold of the rocket body?
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Can we use a drone instead of rocket? [duplicate]

I would like to know if it is possible to use a drone instead of the rocket to launch a satellite into orbit. If no, then I would like to know why, and if yes, then in which countries would this be ...
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Self destruct mechanism on upper stages

In a follow up to this question: the upper stage of the launch vehicles are usually treated as orbiting debris after the launch mission completion. In that case, are there self-destruct ordinance ...

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