Bloodhound LSR Thread As Requested...
Discussion
Mave said:
Yep.
The shock wave propagates from the nose and is straight at Mach 1 (ie if you were standing to the side of the car it would hit you at the same time the nose went past you) and then angles further back as the Mach number increases (to about 30degrees at Mach 2 for example) to form what looks like in arrow from above. So the further away you are from the path of the car, the later the shock wave reaches use; not because of the speed of the shock wave, but because of the geometry.
er, sorry to be pedantic but that's not quite right.The shock wave propagates from the nose and is straight at Mach 1 (ie if you were standing to the side of the car it would hit you at the same time the nose went past you) and then angles further back as the Mach number increases (to about 30degrees at Mach 2 for example) to form what looks like in arrow from above. So the further away you are from the path of the car, the later the shock wave reaches use; not because of the speed of the shock wave, but because of the geometry.
Above Mach 1, the include angle is less than 90 deg
At Mach 1.0 the included angle is 90 degrees
Below Mach 1, the included angle is greater than 90 deg, but there is no shockwave itself
In the transonic region interesting things happen as local streamlines reach M1.0 before the bulk streamline does
There is a good visualisation & explanation here:
https://physics.info/shock/
Edited by anonymous-user on Thursday 14th November 15:09
Max_Torque said:
er, sorry to be pedantic but that's not quite right.
Above Mach 1, the include angle is less than 90 deg
At Mach 1.0 the included angle is 90 degrees
Below Mach 1, the included angle is greater than 90 deg, but there is no shockwave itself
In the transonic region interesting things happen as local streamlines reach M1.0 before the bulk streamline does
There is a good visualisation & explanation here:
https://physics.info/shock/
Above Mach 1, the include angle is less than 90 deg
At Mach 1.0 the included angle is 90 degrees
Below Mach 1, the included angle is greater than 90 deg, but there is no shockwave itself
In the transonic region interesting things happen as local streamlines reach M1.0 before the bulk streamline does
There is a good visualisation & explanation here:
https://physics.info/shock/
Edited by Max_Torque on Thursday 14th November 15:09
The shock wave at Mach 1
Edited by GOATever on Thursday 14th November 16:11
Max_Torque said:
Mave said:
Yep.
The shock wave propagates from the nose and is straight at Mach 1 (ie if you were standing to the side of the car it would hit you at the same time the nose went past you) and then angles further back as the Mach number increases (to about 30degrees at Mach 2 for example) to form what looks like in arrow from above. So the further away you are from the path of the car, the later the shock wave reaches use; not because of the speed of the shock wave, but because of the geometry.
er, sorry to be pedantic but that's not quite right.The shock wave propagates from the nose and is straight at Mach 1 (ie if you were standing to the side of the car it would hit you at the same time the nose went past you) and then angles further back as the Mach number increases (to about 30degrees at Mach 2 for example) to form what looks like in arrow from above. So the further away you are from the path of the car, the later the shock wave reaches use; not because of the speed of the shock wave, but because of the geometry.
Above Mach 1, the include angle is less than 90 deg
At Mach 1.0 the included angle is 90 degrees
WJNB said:
Just a self-obsessed ego trip that will benefit few.
And so much better for it. Not pretending to be something it isn't. There is the laudable aim to bring STEM subjects to life for the younger generation but even without that there's nothing wrong with private individuals spending their money just to do something for no other reason than to see if it can be achieved. This thread may not be for you.
Mave said:
Max_Torque said:
Mave said:
Yep.
The shock wave propagates from the nose and is straight at Mach 1 (ie if you were standing to the side of the car it would hit you at the same time the nose went past you) and then angles further back as the Mach number increases (to about 30degrees at Mach 2 for example) to form what looks like in arrow from above. So the further away you are from the path of the car, the later the shock wave reaches use; not because of the speed of the shock wave, but because of the geometry.
er, sorry to be pedantic but that's not quite right.The shock wave propagates from the nose and is straight at Mach 1 (ie if you were standing to the side of the car it would hit you at the same time the nose went past you) and then angles further back as the Mach number increases (to about 30degrees at Mach 2 for example) to form what looks like in arrow from above. So the further away you are from the path of the car, the later the shock wave reaches use; not because of the speed of the shock wave, but because of the geometry.
Above Mach 1, the include angle is less than 90 deg
At Mach 1.0 the included angle is 90 degrees
Straight would imply 180 degrees would it not.
In fact the shock wave has an included angle of 90 degrees at M1.0 so assuming we have equal primary shocks on either side of the car, those shocks actually stream back off the nose of the vehicle at a 45 degree angle on either side.
Below M1.0 there is no shock wave, because the energy can propagate away in all directions including forwards.
To be frank this is extremely churlish and ill informed. I am not quite sure what you are expecting of a cash strapped project to do, brag about changing sponsor priorities? Jaguar sponsored for a year, got their engine in the car, got their photos and then decided that they had more important cash needs. No fall out, just change of commercial priority. Focus on the long term supportive sponsors such as Swansea Uni, Rolex, RR and latterly Geely. Unfortunately some sponsors took the project for a ride, promising the earth and delivering FA. I hope your professed support is more sincere than these comments.
[quote=Oberon]Over the years several sponsors have pulled out including some major ones such as Jaguar and Cosworth, but news of these events, whilst probably not actively suppressed is rarely reported with due candour. The same applies to the near-collapse of the project - which nobody knew about for months while we all sat begging our computer screens for information. I find this one of the most disappointing issues of this project which claims to be so transparent.
eg "Here's our blueprints, we're not being secretive about our technology"
[quote=Oberon]Over the years several sponsors have pulled out including some major ones such as Jaguar and Cosworth, but news of these events, whilst probably not actively suppressed is rarely reported with due candour. The same applies to the near-collapse of the project - which nobody knew about for months while we all sat begging our computer screens for information. I find this one of the most disappointing issues of this project which claims to be so transparent.
eg "Here's our blueprints, we're not being secretive about our technology"
Yeah. If it was my project I'd celebrate the successes, discuss and learn from the failures and frankly ignore anything else. Just like they have.
FWIW I really appreciate the general openness of it all - and I don't care whether Rolex or Jaguar or whoever aren't part of it - only that they do have a way forward. I honestly believe this thing is once in a lifetime - even though I've been around for the last 3 (noting 2 of them were thrust ssc).
FWIW I really appreciate the general openness of it all - and I don't care whether Rolex or Jaguar or whoever aren't part of it - only that they do have a way forward. I honestly believe this thing is once in a lifetime - even though I've been around for the last 3 (noting 2 of them were thrust ssc).
I suspect all sponsorship agreements that the project had were with the now defunct organisation.
The new team purchased the car without any of the "baggage" the old team had. Any sponsors now have joined to support the new team.
I would expect to see a bit more sponsorship next year, but probably not as much as before.
Names on the tail fin have kindly been left, but need not have been.
The new team purchased the car without any of the "baggage" the old team had. Any sponsors now have joined to support the new team.
I would expect to see a bit more sponsorship next year, but probably not as much as before.
Names on the tail fin have kindly been left, but need not have been.
Dodgeball wrote "To be frank this is extremely churlish and ill informed. I am not quite sure what you are expecting of a cash strapped project to do, brag about changing sponsor priorities?"
What I would have expected of an operation relying predominately on sponsorships is something along the lines of.
"The Bloodhound project notes with regret the announcement by Ajax Thermodynamics that it intends to discontinue it's sponsorship/partnership in the project and thanks Ajax for it's support to date."
A statement like that would demonstrate both gratitude and courtesy to the sponsor (and potential future sponsors!) and keep the likes of you and me in the loop.
What I would have expected of an operation relying predominately on sponsorships is something along the lines of.
"The Bloodhound project notes with regret the announcement by Ajax Thermodynamics that it intends to discontinue it's sponsorship/partnership in the project and thanks Ajax for it's support to date."
A statement like that would demonstrate both gratitude and courtesy to the sponsor (and potential future sponsors!) and keep the likes of you and me in the loop.
Oberon said:
Dodgeball wrote "To be frank this is extremely churlish and ill informed. I am not quite sure what you are expecting of a cash strapped project to do, brag about changing sponsor priorities?"
What I would have expected of an operation relying predominately on sponsorships is something along the lines of.
"The Bloodhound project notes with regret the announcement by Ajax Thermodynamics that it intends to discontinue it's sponsorship/partnership in the project and thanks Ajax for it's support to date."
A statement like that would demonstrate both gratitude and courtesy to the sponsor (and potential future sponsors!) and keep the likes of you and me in the loop.
Do we need to be kept in the loop with regards to who is sponsoring them?What I would have expected of an operation relying predominately on sponsorships is something along the lines of.
"The Bloodhound project notes with regret the announcement by Ajax Thermodynamics that it intends to discontinue it's sponsorship/partnership in the project and thanks Ajax for it's support to date."
A statement like that would demonstrate both gratitude and courtesy to the sponsor (and potential future sponsors!) and keep the likes of you and me in the loop.
I hadn't actually read that page. Cringeworthy photo of the mashed up screw alongside the High speed tests section - think I'd break out the posh screw for the photoshoot. They must have at least 1.
wst said:
Maybe the sponsor did not want their withdrawal announcing? Look at how many people still think the rocket pump is the Cosworth engine, or the Jaguar engine.
Thats good for the sponsors because it keeps them in peoples minds without them having any input, money or otherwise, in the project.
Thats good for the sponsors because it keeps them in peoples minds without them having any input, money or otherwise, in the project.
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