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SpaceX BFR [video]

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Re: SpaceX BFR [video]

#11

Post by jacquesm »

wayanon wrote: post #7

The security protections on the launch pads alone would have to be incredibly high. Looks vulnerable at sea like that.

Like the security precautions at airports? Any airport that I'm familiar with has access roads and roads around it that are accessible to the public from where any idiot with an RPG or possibly even a rifle could attempt to bring down a passenger jet. And yet it does not happen.

Re: SpaceX BFR [video]

#13

Post by FatalLogic »

jacquesm wrote: post #2

Interesting. Two little issues: safety and ticket costs. Also, your average overweight tourist isn't going to be very happy at several G's.

Extrapolating very naively from SpaceX prices[1] for Falcon Heavy to low earth orbit suggests a ticket price of about $150,000, at $1500 per kg

That is ignoring safety, and other pros and cons such as Falcon Heavy didn't fly yet, Space-X doesn't have a passenger module, frequency and economic scale of passenger operation, different flight profile from LEO, lack of regulatory framework, and so on

[1]http://www.spacex.com/about/capabilities

Re: SpaceX BFR [video]

#14

Post by puranjay »

jacquesm wrote: post #2

Interesting. Two little issues: safety and ticket costs. Also, your average overweight tourist isn't going to be very happy at several G's.

I trust SpaceX to figure this out.

They've already solved the hardest problem: landing a rocket upright

Re: SpaceX BFR [video]

#16

Post by jacquesm »

puranjay wrote: post #14
jacquesm wrote: post #2

Interesting. Two little issues: safety and ticket costs. Also, your average overweight tourist isn't going to be very happy at several G's.

I trust SpaceX to figure this out. They've already solved the hardest problem: landing a rocket upright

Fuel cost is a constant for rocketry, there is nothing to figure out there, and people tend to go through a whole bunch of checks before they are allowed to be flown on a rocket to stop them from developing some critical issue in a place where there is no way to get help or be helped. You can't do emergency medical stuff while accelerating and decelerating in a rocket and this one is doing either one almost all the time.

Re: SpaceX BFR [video]

#19

Post by vincnetas »

FatalLogic wrote: post #13
jacquesm wrote: post #2

Interesting. Two little issues: safety and ticket costs. Also, your average overweight tourist isn't going to be very happy at several G's.

Extrapolating very naively from SpaceX prices[1] for Falcon Heavy to low earth orbit suggests a ticket price of about $150,000, at $1500 per kg That is ignoring safety, and other pros and cons such as Falcon Heavy didn't fly yet, Space-X doesn't have a passenger module, frequency and economic scale of passenger operation, different flight profile from LEO, lack of regulatory framework, and so on [1] http://www.spacex…

You don't need to reach orbital speed, only ballistic trajectory. So i guess fuel consumption is less than low earth orbit trips.

Re: SpaceX BFR [video]

#20

Post by greglindahl »

jacquesm wrote: post #12
greglindahl wrote: post #5

Earlier quoted context omitted.

Falcon 9 is already that, with the bonus that it's got a big enough payload that you don't need to miniaturize the bomb.

You don't even need a bomb.

That would require additional software development and might not be nearly as accurate.
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