Author Topic: ESA - Vega Updates  (Read 161976 times)

Offline SciNews

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Re: ESA - Vega Updates
« Reply #240 on: 08/10/2018 10:08 AM »
But can it reach Mach 10 in 5 seconds after launch? The Sprint ABM had 3.0 MN of thrust and only massed 3.4 tonnes, a liftoff TWR of 88.
The article was about satellite-launch market, not weapons.

Offline envy887

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Re: ESA - Vega Updates
« Reply #241 on: 08/10/2018 11:43 AM »
But can it reach Mach 10 in 5 seconds after launch? The Sprint ABM had 3.0 MN of thrust and only massed 3.4 tonnes, a liftoff TWR of 88.
The article was about satellite-launch market, not weapons.
It's an inaccurate clickbait headline. The fastest rocket in the world is the 3-stage Delta IV that is launching PSP tomorrow morning.

Offline edkyle99

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Re: ESA - Vega Updates
« Reply #242 on: 08/10/2018 02:38 PM »
Yes, except that by the time Delta 4H/Star 48 is going that fast, it is no longer "in the world", is it?!

In terms of flat out "zero to 60" acceleration for an orbital launch vehicle, what about Japan's SS-520?  18 tonnes of liftoff thrust for a 2.6 tonne launch vehicle, but no future plans to launch perhaps.

I think a valid comparison of this type might be time to orbital velocity - "zero to orbit".

 - Ed Kyle
« Last Edit: 08/10/2018 02:43 PM by edkyle99 »

Offline SciNews

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Re: ESA - Vega Updates
« Reply #243 on: 08/10/2018 03:00 PM »
It's an inaccurate clickbait headline. The fastest rocket in the world is the 3-stage Delta IV that is launching PSP tomorrow morning.
Just move past the title, it's an interesting article.
The Solar Probe will be the fastest, not the rocket launching it
In terms of flat out "zero to 60" acceleration for an orbital launch vehicle, what about Japan's SS-520?  18 tonnes of liftoff thrust for a 2.6 tonne launch vehicle, but no future plans to launch perhaps.
Unfortunately, the SS-520 launch didn't have visual indication of altitude
For an accurate comparison, it must be taken into account that at the same altitude the distance traveled may differ.


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