Questions tagged [failure]

Questions regarding missions or parts of missions which were not successful.

Filter by
Sorted by
Tagged with
7
votes
1answer
310 views

What does a company do after a failed satellite launch?

What does a company (or government organization) do when a launch fails and the satellite they purchased to be put into orbit is lost? For the sake of the discussion, assume they have launch insurance....
4
votes
1answer
391 views

Failure modes of segmented solid rocket boosters

The Rogers Commission Report (PDF, page 73) describes the Space Shuttle Solid Rocket Boosters as [...] a faulty design unacceptably sensitive to a number of factors. These factors were the ...
4
votes
1answer
346 views

Which engine failed during CRS-1?

During SpaceX's CRS-1 mission, "engine 1" failed, but the booster still completed its primary mission due to a plentiful thrust and fuel margin. Clearly, an outboard engine failure is more critical ...
19
votes
2answers
4k views

Will the James Webb Space Telescope be insured against launch failure?

Most commercial satellites are insured in case something happens on launch. Although the Ariane 5 is a fairly reliable rocket, a launch failure is not out of the question. While other questions have ...
15
votes
1answer
674 views

Historically, how risky are first launches of new rockets?

Apropos of the Falcon Heavy test flight scheduled for February 6, 2018, what is the failure rate of first launches of new orbital rocket designs? How has this rate changed over time since the 1950s? ...
32
votes
3answers
6k views

Will the Falcon Heavy be far enough in 12 seconds to not cause damage?

Elon Musk has stated that he will consider it a success if the Falcon Heavy gets far enough away from the launch pad to not cause damage if it blows up. The Falcon Heavy underwent a 12 second static ...
8
votes
0answers
351 views

For a launch, how is safe viewing distance determined?

In determining safe viewing distance, seems to me there are discrete threats to consider: First is the rocket blowing up on the pad, or just above it. That would have no warning. There would be a ...
4
votes
1answer
519 views

Why couldn't the Falcon 1 flight 3 launch make it to orbit?

I've looked for better explanation, and all I can get is: Stage separation occurred as planned, but because residual fuel in the new Merlin 1C engine evaporated and provided transient thrust, the ...
2
votes
0answers
98 views

How does SpaceX determine mission success [closed]

In a tweet https://twitter.com/elonmusk/status/678679083782377472 Mr Musk states that they are using Monte Carlo analysis to determine mission success. My Question(s): how does that work exactly? ...
2
votes
0answers
208 views

Databases of “scrubbed” launch attempts?

I'm curious if there is a statistically demonstrable tendency not to schedule launches on certain days, such as those that contain leap seconds (see answers below this question), year changes, or ...
2
votes
1answer
157 views

Are there any procedures against biohazard containment failure on ISS?

This question might be more of a sci-fi question, so forgive me. It was inspired on behalf of the movie Life (2017) where the crew aboard the ISS catch a soil sample from Mars, and discover that it ...
5
votes
2answers
2k views

Problems compressing the helium tanks inside the F9 2nd stage LOX tank at the last minute?

A recent "Anomaly Update" dated September 23, 1:00pm EDT by SpaceX, includes the sentence: "At this stage of the investigation, preliminary review ...
3
votes
0answers
171 views

Does a safety team get fined if a rocket launch fails due to the safety of the rocket?

I was writing a story and I wanted to write about this topic but I could not find a straight answer from any website. Please help
6
votes
1answer
310 views

Insight on EDM Schiaparelli's IMU error and subsequent failed landing

Read this SpaceNews article which states,'1 second of Inertial Measurement error' caused the devastation in the Schiaparelli's landing sequence, causing it to free fall for 3.7 kms. What is exactly ...
10
votes
2answers
1k views

What was the death toll of the Nedelin catastrophe?

There are some conflicting accounts on the Nedelin catastrophe. "A significant number", "Hundreds", "Scores of engineers". The closest to a concrete number I found is 74 deaths on site, but the number ...
14
votes
2answers
2k views

Is there a “procedural shift” meaning to the statement “we have cleared the tower”

I am very new to space exploration by humans (was always much more interested in astronomy) and have just begun looking at rocket launches in the 1960s because my little four year old is interested in ...
11
votes
2answers
467 views

What happens next if the root cause of one rocket failure won't be identified?

Supposing that in a rocket failure engineers don't find what the root cause was, what will happen next? In general if the root cause will never be fully understood is there a law, rule, or standard ...
11
votes
2answers
519 views

How can just making the ground broadcast stronger neutralize a zombie(sat)?

In April of 2010 the Geo-not-so-stationary satellite Galaxy-15 stopped responding to ground commands. It operates as a "bent-pipe" or Transponder system, which means - roughly speaking - it will ...
19
votes
1answer
1k views

Why is the F9-029 Amos 6 case more complex than the F9-020 CRS-7 explosion?

In the F9-029 Amos 6 mission failure at the launch pad, a "fast fire" happened near the 2nd stage of Falcon 9 FT. In F9-020 CRS-7 mission, an explosion happened in flight (again in the 2nd stage) a ...
8
votes
2answers
762 views

Why was OSIRIS-REx almost destroyed because of a loss of pressure following the SpaceX “fast fire”?

In the news item on the website of ABC's affiliate station WFTV in Florida Official: SpaceX explosion nearly destroyed asteroid-seeking OSIRIS-REx spacecraft, there is discussion of a loss of pressure ...
35
votes
3answers
4k views

Why was AMOS-6 mounted on the rocket for a test fire?

I understand that the static test is a general test of pre-launch procedures, but risking a multi-million dollar payload for a test seems remarkable. Couldn't they use a mass simulator or something? ...
4
votes
1answer
1k views

What is the advantage of doing a static test fire before launch?

Continuing the series of questions (part 1, part 2) inspired by the recent loss of the AMOS-6 satellite during a static test fire, here's one thing that puzzles me a bit: What kinds of problems is a ...
28
votes
1answer
34k views

What does 'Switch SCE to AUX' mean?

During the launch of Apollo 12 a major malfunction was caused by 2 lightning strikes. See http://www.realclearscience.com/blog/2013/02/apollo-12-struck-by-lightning.html for more info. The solution ...
13
votes
2answers
29k views

What is the success/failure ratio of space bound rockets?

There are thousands of satellites orbitting our planet and everyone of them got there from a rocket launch. I know that when a launch fails it is practically always a catastrophic failure, otherwise ...
7
votes
1answer
627 views

What rocket launch protocols (if any) are in place to prevent premature or late intentional self-destruct?

There's a few related questions about rocket self-destruct mechanisms here already, e.g.: How are self-destructs implemented in rocketry? (covers how they work) Do all launches include self-destruct ...
15
votes
2answers
831 views

How does one build software for a Satellite such that a new build doesn't break it?

Sometimes, despite all ground testing, a new build of software can break a satellite. How does one put in protections to keep this failure from being a permanent failure? For example, what do you do ...
3
votes
1answer
170 views

Summary of events and issues leading to the loss of Hitomi?

Hitomi was an Astrophysics science satellite in LEO with four X-ray telescopes, for imaging and spectroscopy of soft and hard X-rays. A paper based on some of the data collected during it's short ...
12
votes
1answer
1k views

What went wrong with the CRS-7 launch?

Today's CRS-7 launch from Cape Canaveral (unfortunately) ended rather spectacularly, with an explosion about a minute after reaching Max-Q (maximum dynamic pressure), and with the rocket apparently ...
0
votes
0answers
122 views

Which communications satellite “fell down?” [duplicate]

I remember reading about an accident where a big, expensive communications satellite actually fell off it's mount and landed on the floor of the room where it was undergoing final assembly and ...
12
votes
1answer
2k views

Could the Shuttle boosters crash into each other?

I watched a few videos "from the boosters" of their suborbital flight with the Shuttle, and what I noticed is that after the boosters were jettisoned there was a phase of flight that was quite chaotic ...
20
votes
3answers
1k views

What exactly causes stranded upper stages to explode?

Usually if an upper stage experiences a failure before it can "passivate" itself (empty tanks, drain batteries, etc.), it's only a matter of time before it explodes. For recent examples, see any of ...
2
votes
1answer
174 views

Could a micrometeorite bombardment in an IMIS craft result in reactor rupture leading to the crew becoming stranded?

Apparently, I am a bit indecisive regarding an event that could possibly occur within the context of reality regarding nuclear thermal rockets, and I was thinking: is this space disaster scenario ...
19
votes
4answers
4k views

Is SpaceX the only launch service provider who can attempt another launch the next day after a scrub?

Is SpaceX really the only launch service provider, who can attempt another launch the very next day after a scrub? While other providers may need weeks of preparations before another try. If that is ...
3
votes
1answer
79 views

How will Philae's power failure affect Rosetta's mission?

With Philae dead on the comet, how will Rosetta's mission change? Obviously there isn't anything more that the lander can do, so Rosetta doesn't have to use its time and resources trying to wake it up....
1
vote
1answer
477 views

What are the causes of Reaction Wheel Failures/Anomalies? [duplicate]

What are the mechanisms of reaction wheel anomalies? Are there any fish bone or fault tree analyses on these issues?
14
votes
3answers
1k views

Has any spacecraft had a way for the crew to escape during reentry?

All manned spacecraft to date have come back to Earth eventually, and when they do it's through a flaming ball of plasma. It seems too probable that this plasma would have a way of breaking things ...
10
votes
2answers
401 views

When did Kepler roll over and how does it match the anomalies of KIC 8462852?

The Kepler space telescope, during its first mission, rolled over four times per year in order to keep its heat shield facing the Sun. At what dates (in that BJD time format) was this done during the ...
-2
votes
1answer
282 views

Can Zachman framework be used to find out reason of Columbia space shuttle disaster?

It is somewhat hard to fill in the table without knowing the exact details beside what I can gather up from wiki that the incident was mainly attributed to damage to lift wing of shuttle going ...
15
votes
3answers
2k views

How much of Dragon might have survived the explosion of CRS-7 and for how long?

At June 28th 2015, the SpaceX flight CRS-7 failed when the Falcon 9 v1.1 rocket exploded minutes after liftoff. Shotwell said twice during the press conference that Dragon capsule was transmitting ...
7
votes
3answers
798 views

Could a communication satellite that fails to reach GEO be repurposed?

When a launcher's upper stage fails to put a commercial communication satellite in geostationary orbit, it cannot be used as intended. But could it be used in satellite-to-satellite communication ...
24
votes
2answers
2k views

Did the designers of Voyager neglect the angular momentum of the tape recorders?

I have heard many times that the designers of the Voyager spacecraft neglected to account for the angular momentum of the tape recorders (on which data was stored). To compensate for it after launch, ...
4
votes
1answer
416 views

Why aren't there more guidance computers on cargo rated launch vehicles?

According to this video human-rated launch vehicles can have six guidance computers while cargo-rated launch vehicles seldom have more than two. If these computers function independently for greater ...
7
votes
2answers
963 views

What will the next ISS resupply launch be named?

Commercial Resupply Services (CRS) are contracts awarded by NASA for delivery of cargo and supplies to the International Space Station (ISS) on commercially operated spacecraft. SpaceX signed a ...
5
votes
1answer
797 views

What happened during ILS Proton M / Mexsat 1 launch?

It seems that some "abnormal situation" (нештатная ситуация) happened about a minute before Briz-M upper stage ignition, possibly during third stage separation of the International Launch Services' ...
5
votes
1answer
1k views

Most common causes of 21st century launch failures and how often do launches fail?

In this document (Page 7, point 4.3), Garrett Reisman notes that an analysis by Aerospace Corporation showed the most common causes for launch failures between 1980 and 1999. This document shows the ...
5
votes
3answers
1k views

By how much may the maximum payload mass vary without causing a launch failure?

Most launch vehicles define an upper limit on the payload they may carry. For instance - Falcon 9, prepped for launch, has a defined max. payload capability of 13,150 kg. I would like to know the ...
11
votes
1answer
903 views

Do space launch service providers have to refund the loss of payload if the rocket explodes?

For example, when the Antares rocket, built and launched by commercial Orbital Sciences Corp burst into flames on October 28, 2014, it carried a lot of expensive payload. Did the company have to ...
8
votes
2answers
281 views

How are accidents involving rockets and space vessels investigated?

There have been two accidents in the past week, the Antares launch of Orbital Science's CRS-3 mission, and the test flight of SpaceShip Two that went awry, resulting in the death of one of the two ...
25
votes
1answer
4k views

Do all launches include self-destruct mechanisms?

Do all launches involve self-destruct mechanisms? How do they usually work? Is it just the boosters that are required to self-destruct? In the case of the space shuttle, how about the external tank? ...
4
votes
2answers
868 views

Progress M-25M launched because of Antares?

Was Progress M-25M launched in response to Antares' catastrophic failure or were they 2 different launches, both planned to reach the ISS "separately"?