RE: PH blog: a sniff of Bloodhound
Discussion
R500POP, Thrust SSC encountered signficant drag rise at supersonic speed due to tyre/surface drag. My impression being that the bow shock pulverised the the surface into a friable state ahead of the tyres. Hence SSC was effectively 'running across a ploughed field' and despite using the most powerful engines available, it never quite achieved its target design speed, although Andy successfully exceeded M1.0 by a comfortable margin.
Has the cause of the massive drag rise been identified and countered for Bloodhound? I spoke with Dog a while ago and he didn't know whether this had been achieved.
Massive thrust from the EJ and the rocket won't be sufficient if the surface again turns into mush. Maybe the South African surface has a higher CBR than had the Black Rock surface?
Has the cause of the massive drag rise been identified and countered for Bloodhound? I spoke with Dog a while ago and he didn't know whether this had been achieved.
Massive thrust from the EJ and the rocket won't be sufficient if the surface again turns into mush. Maybe the South African surface has a higher CBR than had the Black Rock surface?
Haymarketnickwilcock said:
R500POP, Thrust SSC encountered signficant drag rise at supersonic speed due to tyre/surface drag. My impression being that the bow shock pulverised the the surface into a friable state ahead of the tyres. Hence SSC was effectively 'running across a ploughed field' and despite using the most powerful engines available, it never quite achieved its target design speed, although Andy successfully exceeded M1.0 by a comfortable margin.
Has the cause of the massive drag rise been identified and countered for Bloodhound? I spoke with Dog a while ago and he didn't know whether this had been achieved.
Massive thrust from the EJ and the rocket won't be sufficient if the surface again turns into mush. Maybe the South African surface has a higher CBR than had the Black Rock surface?
That's correct, Thrust never reached it's full design speed due to mant factors, the desrt floor being one, but we are hoping the African desert will offer a far more stable surface to run on.Has the cause of the massive drag rise been identified and countered for Bloodhound? I spoke with Dog a while ago and he didn't know whether this had been achieved.
Massive thrust from the EJ and the rocket won't be sufficient if the surface again turns into mush. Maybe the South African surface has a higher CBR than had the Black Rock surface?
wiggy001 said:
One of the most amazing things about this project is surely the tiny budget they are working to. That seems to be too small by a factor of 10 to a layman like me!
Think about the budgets F1 teams have. And these guys are using an F1 engine as a fuel pump. The cheap bit!
Was a pleasure to see some of this up close as Goodwood this year and last.
Absolutely incredible.
Give a British man a big enough shed and not quite enough money, and watch him perform miracles.Think about the budgets F1 teams have. And these guys are using an F1 engine as a fuel pump. The cheap bit!
Was a pleasure to see some of this up close as Goodwood this year and last.
Absolutely incredible.
I watched the live feed online with my Dad yesterday, we followed the previous SSC project by email (back in the day), we've donated again for this project and stood together with fingers crossed.
Brings a swelling to your heart, tear to the eye and lump to the throat as another British project roundly thumps all competition. Not enough for Richard and Andy to take the Sound barrier and record, now before anyone else has even come close they want to put the barrier basically out of reach of anyone- absolutely stonking daring IMO.
You have to wonder when the goverment and industry can drop billions on the Olympics this project hasn't already been funded to 100% They did it before, I believe they will do it again- or make a spectacular attempt.
Watching that rocket I have to hand it to Andy for carrying on the commentary- he's got some balls to be sitting a few feet infront on that, when he lights it up he'll already be doing 300+mph IIRC.
(Am I the only one who is reminded of a Thunderbirds vehicle whenever I see one of Ron's LSR cars :-)
Brings a swelling to your heart, tear to the eye and lump to the throat as another British project roundly thumps all competition. Not enough for Richard and Andy to take the Sound barrier and record, now before anyone else has even come close they want to put the barrier basically out of reach of anyone- absolutely stonking daring IMO.
You have to wonder when the goverment and industry can drop billions on the Olympics this project hasn't already been funded to 100% They did it before, I believe they will do it again- or make a spectacular attempt.
Watching that rocket I have to hand it to Andy for carrying on the commentary- he's got some balls to be sitting a few feet infront on that, when he lights it up he'll already be doing 300+mph IIRC.
(Am I the only one who is reminded of a Thunderbirds vehicle whenever I see one of Ron's LSR cars :-)
Epic, the fact it's manned makes it all the more incredible and much better to me.
on the same note Reaction Engines Ltd tested their SABRE air breathing rocket engine earlier this year. limited funding and British government apathy were overcome to allow the space race to hopefully continue.
on the same note Reaction Engines Ltd tested their SABRE air breathing rocket engine earlier this year. limited funding and British government apathy were overcome to allow the space race to hopefully continue.
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