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Questions tagged [risk-management]

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What is a safe speed in space for spacecraft?

Does traveling fast as possible shortening the duration of the mission lessen chances of collision or mechanical failure, or does traveling slower in space in some way safer?
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0answers
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SGP4: the accumulation of error in radial, in-track and cross-track

I'm propagating the trajectories of 2 LEO satellites (altitude 700 km) in 7 days and calculating the radial, in-track and cross-track distances to determine the risk of collision. JSPoC states that ...
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1answer
935 views

Is Starman/Roadster in any danger in the asteroid belt?

Elon tweeted that Starman's trajectory is going to overshoot Mar's orbit and bring it close to the asteroid belt. Does this mean that Starman is in danger of being crushed by an asteroid??
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3answers
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Why is the Falcon Heavy first launch being given such a risk of failure? [closed]

Why is there is so much fuss about Falcon Heavy exploding on the way? I don't understand why would they purposely design a rocket having a good chance of explosion during launch. If they are not ...
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0answers
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What are the risks of using cheap industrial components for commercial space appliances esp. solution platforms for them?

This might be a stupid newbie question, but I really wonder reading that folks use cheap "commodity" hardware for satellites like mentioned here, like boards MSP430F5529 or STM32F407 but for sure ...
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0answers
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What is the probability that a deep space crew is hit by a Solar proton storm?

The Sun's magnetic field now and then accelerates a gigantic amount of high velocity protons in different directions. Regardless of the types and causes, let's call it "proton storm" when it is ...
15
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1answer
754 views

Does having only 3 people on the ISS create workload problems?

There are a couple of quick ways to check the number of people in space, right now there are 3. Usually the ISS has a crew of 6. The launch planned for the other 3 crew was delayed indefinitely due to ...
3
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1answer
789 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 ...
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7answers
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What are the most serious injuries that astronauts have suffered while in orbit?

Among astronauts in orbit, what is the worst real injury recorded? Has anyone hit himself on the thumb with a hammer or something? Squeezed a finger in a closing door? Gotten poisoned by some leaking ...
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2answers
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Cassini flyby through Enceladus plume - How risky is that for the spacecraft and its instruments?

This Wednesday, October 28 2015 at 11:22 a.m. EDT (15:22 UTC), Cassini spacecraft will flyby through the Enceladus plume at only 30 miles (49 km) altitude to analyze plume chemistry with its ion and ...
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1answer
212 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 ...
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2answers
264 views

Couldn't precursor missions increase the risk of losing a crew?

Let's say that the big goal for HSF is decided to be to land humans on the surface of Mars. Is it certain that the total mission/campaign risk decreases if one does crewed precursor missions? For ...
10
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1answer
489 views

How risky is launching a rocket during a geomagnetic and solar radiation storm?

Today's launch of Arianespace Vega rocket deploying Sentinel 2A Earth observation satellite for ESA & European Commission went ahead as planned, lifting off on June 23, 2015 at exactly 01:51:58 ...
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1answer
279 views

What were emergency procedures for failure of launch vehicles with nuclear upper stages?

There were many studies in the 1960s, and a lesser number of later ones, for launch vehicles with nuclear-thermal upper stages. I have rarely seen mention of what emergency procedures were considered ...
17
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1answer
2k views

How much of a commercial space launch can be insured?

When Orbital Sciences' Antares rocket exploded at Wallops Island just six seconds after launch, the loss of the rocket and spacecraft was estimated at more than $200 million, not including damage to ...
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2answers
5k views

Success-fail probabilities for Apollo XI?

Is it known whether probabilities of success vs failure (and specifically fatal failures) were estimated at the time for the Apollo XI mission? Or perhaps some current estimates?
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1answer
159 views

Did the tail of Siding Spring distort communication between Mars, and Earth?

This article writes to say There was an hour’s communication blackout during the comet’s fly-by ... What happened here? Did the tail of Siding Spring serve to block/distort communication between ...
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2answers
1k views

Dangers of launching a nuclear thermal rocket

Nuclear thermal rockets may have great benefits for Solar system exploration. But one consideration is that the launch of a nuclear engine from Earth's surface, as the payload on a chemical rocket, ...
4
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1answer
803 views

Do meteor showers from 209P/LINEAR cometary debris pose a threat to the ISS and other Earth-orbiting satellites?

This is a somewhat similar question to What risk management options are available for Mars orbiters and rovers to mitigate threat of impacting with Siding Spring cometary debris?, only this time much ...
11
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2answers
702 views

What risk management options are available for Mars orbiters and rovers to mitigate threat of impacting with Siding Spring cometary debris?

I was reading this article on New Scientist titled Fiercest meteor shower on record to hit Mars via comet. Long story short, the Oort cloud comet C/2013 A1 Siding Spring is predicted to near-miss Mars ...