Wednesday, April 24, 2024
Contact    |    RSS icon Twitter icon Facebook icon  
Unexplained Mysteries
You are viewing: Home > News > Space & Astronomy > News story
Welcome Guest ( Login or Register )  
All ▾
Search Submit

Space & Astronomy

SpaceX under fire over rocket fueling process

By T.K. Randall
November 2, 2016 · Comment icon 12 comments

Fueling a rocket with the astronauts on board could be disastrous. Image Credit: NASA/Jim Grossmann
Experts have warned that SpaceX's plan to fuel rockets while astronauts are on board could prove fatal.
The private space firm suffered a significant setback at the beginning of September when one of its Falcon 9 rockets exploded on the launchpad while it was being fueled.

Last week an official investigation in to the accident indicated that it may have been caused by a pressurized helium container bursting due to an issue with the fueling system.

One of the most significant differences in the way SpaceX fuels its rockets is that it uses extremely cold liquid propellants which have to be loaded immediately prior to launch to enable the vehicle to land again afterwards as part of the firm's reusable rockets program.
While this is acceptable for unmanned launches, when it comes to sending humans in to space it means that the astronauts will need to be on board while the fueling process is taking place.

"This is a hazardous operation," said former NASA astronaut and Space Station Advisory Committee Chairman Thomas Stafford who noted that all of NASA's previous rockets which carried humans in to space were fueled up before the astronauts ever set foot on the launchpad.

"Everybody there, and particularly the people who had experience over the years, said nobody is ever near the pad when they fuel a booster."

SpaceX has since stated that it will reassess its fueling and launch procedures depending on the results of its investigation in to September's rocket explosion.

Source: Reuters | Comments (12)




Other news and articles
Recent comments on this story
Comment icon #3 Posted by Merc14 8 years ago
They are going to have to accept the fact that they are not going to get manned boosters back and fuel before the crew is allowed to board. 
Comment icon #4 Posted by Waspie_Dwarf 8 years ago
Yes,and life jackets on an airliner are to save you if the plane ditches in the water, but only an idiot would want to fly on a plane where you are almost certainly going to need the life jackets.
Comment icon #5 Posted by ROGER 8 years ago
Humans are dare devils by nature . Would you or I sit in said capsule during fueling , NO . ( But some will . ) Either way my large backside will never have to worry about making that decision .  
Comment icon #6 Posted by Waspie_Dwarf 8 years ago
Astronauts are NOT dare devils. Whilst some are test pilots many are scientists, doctors, engineers. They have a dangerous job but, like all intelligent people with a dangerous job, they will do everything possible to reduce the risks. Quite frankly I find it disturbing that you would even consider it a reasonable course action to place astronauts in a life threatening position just because they have an abort system that might save their lives in the event of a catastrophic failure, particularly on a rocket that has suffered two such catastrophic failures in 15 months.
Comment icon #7 Posted by third_eye 8 years ago
"You Just Died - Load Previous Saved Game" Gamer Syndrome  
Comment icon #8 Posted by paperdyer 8 years ago
This is why private launchings are going to have to have more scrutiny.  I'm sure there is a cost savings somewhere or Space X wouldn't be doing it.  Maybe they used the same logic as fueling an airplane on the ground while it's occupied.
Comment icon #9 Posted by Waspie_Dwarf 8 years ago
This is not a cost saving measure, it is for increased performance. The latest version of the Falcon 9, known as the Falcon 9 Full Thrust, gains a performance advantage over the previous version, the Falcon 9 v1.2, by super cooling the fuel and liquid oxygen. This makes them denser so effectively more fuel can be carried in the same sized tanks. The down side is that this super chilled fuel and O2 begin to warm rather quickly,thus necessitating a rapid fueling of the rocket in the final stages of the count down, In the case of a crewed mission this means fueling after the astronauts are on  b... [More]
Comment icon #10 Posted by schizoid78 8 years ago
Wow, if it can make boom during refueling, what can it does when the engine is started! S
Comment icon #11 Posted by Peter B 8 years ago
Waspie_Dwarf, could you please explain something for me (or anyone else with the right knowledge)... Both the Saturn V and Space Shuttle carried liquid oxygen and liquid hydrogen as fuel. And while, as you say, the fueling happened before the astronauts stepped on board, wasn't it the case that the tanks were constantly being topped up due to boil-off from the time fueling finished until a few seconds before launch? On that basis, what's the difference with what SpaceX wants to do? Is it to do with the volume of fuel being loaded?
Comment icon #12 Posted by Merc14 8 years ago
Peter, i believe it is they temperatures they are using that is the difference.  The lower the temp the greater the density and hence the ability to lift payloads into orbit and return the first stage for reuse.  In order to keep the fuel that cold you must upload it at the last minute, so to say, and then launch.  I can never see NASA allowing this procedure with a manned capsule so none of those first stages will be recoverable, IMHO, for the foreseeable future.    Not a big deal, really but I believe some day we will have it figured out.  SpaceX is pushing the envelope, as we used to... [More]


Please Login or Register to post a comment.


Our new book is out now!
Book cover

The Unexplained Mysteries
Book of Weird News

 AVAILABLE NOW 

Take a walk on the weird side with this compilation of some of the weirdest stories ever to grace the pages of a newspaper.

Click here to learn more

We need your help!
Patreon logo

Support us on Patreon

 BONUS CONTENT 

For less than the cost of a cup of coffee, you can gain access to a wide range of exclusive perks including our popular 'Lost Ghost Stories' series.

Click here to learn more

Recent news and articles