RE: 'Desert spec' Bloodhound LSR revealed

RE: 'Desert spec' Bloodhound LSR revealed

Author
Discussion

wab172uk

2,005 posts

228 months

Tuesday 22nd October 2019
quotequote all
simon-tigjs said:
The design speed is 1050mph at the same location so if they're struggling to git 500mph runs in they've got a problem.

I was trying to work out how far down the run they would be at 500mph but then read your comment. 1050 mph ??? as in 17.5 miles per minute or 34 seconds at maximum velocity to clear the course. Add in terminal velocity to push through at circa 200mph even allowing for zero wind and the air doesn't get thinner like a rocket climbing, the sound barrier at circa 700mph, the fact the ground speed is not diluted like a jet fighter 200 feet off the ground, it might be a tad bumpy and a breath of wind is likely to be devastating to its stability, one does wonder if there has been a touch too much Michael Gove consumed on this project. It would be a staggering achievement. Go boys. Go !
So the current LSR is 760mph, set by Andy Green in a car that looks a lot wider and stable that this new car. Yet they want to increase the record by another 240mph?

As you say at that speed it's going to be a hell of a bumpy ride. I hope they do achieve it. Irrelevant as it is, but a great achievement for all those involved.

The car looks too narrow to me, and potentially unstable should it get bumpy at those speeds, that I fear it may be Andy Greens last drive.

joe1145

198 posts

122 months

Tuesday 22nd October 2019
quotequote all
wab172uk said:
So the current LSR is 760mph, set by Andy Green in a car that looks a lot wider and stable that this new car. Yet they want to increase the record by another 240mph?

As you say at that speed it's going to be a hell of a bumpy ride. I hope they do achieve it. Irrelevant as it is, but a great achievement for all those involved.

The car looks too narrow to me, and potentially unstable should it get bumpy at those speeds, that I fear it may be Andy Greens last drive.
You see that big fin on the back? That will provide plenty of stability at 500+MPH they are aiming for

RumbleOfThunder

3,566 posts

204 months

Tuesday 22nd October 2019
quotequote all
wab172uk said:
simon-tigjs said:
The design speed is 1050mph at the same location so if they're struggling to git 500mph runs in they've got a problem.

I was trying to work out how far down the run they would be at 500mph but then read your comment. 1050 mph ??? as in 17.5 miles per minute or 34 seconds at maximum velocity to clear the course. Add in terminal velocity to push through at circa 200mph even allowing for zero wind and the air doesn't get thinner like a rocket climbing, the sound barrier at circa 700mph, the fact the ground speed is not diluted like a jet fighter 200 feet off the ground, it might be a tad bumpy and a breath of wind is likely to be devastating to its stability, one does wonder if there has been a touch too much Michael Gove consumed on this project. It would be a staggering achievement. Go boys. Go !
So the current LSR is 760mph, set by Andy Green in a car that looks a lot wider and stable that this new car. Yet they want to increase the record by another 240mph?

As you say at that speed it's going to be a hell of a bumpy ride. I hope they do achieve it. Irrelevant as it is, but a great achievement for all those involved.

The car looks too narrow to me, and potentially unstable should it get bumpy at those speeds, that I fear it may be Andy Greens last drive.
I don't mean to be rude and it's a genuine question, do you have any credentials on the subject? I ask because there's quite a few people in this thread questioning if the team has enough space and stability to reach their goals, and I'd hope it's based on more that "ah well it doesn't look right to me" maths.

Galveston

716 posts

200 months

Tuesday 22nd October 2019
quotequote all
wab172uk said:
So the current LSR is 760mph, set by Andy Green in a car that looks a lot wider and stable that this new car. Yet they want to increase the record by another 240mph?

As you say at that speed it's going to be a hell of a bumpy ride. I hope they do achieve it. Irrelevant as it is, but a great achievement for all those involved.

The car looks too narrow to me, and potentially unstable should it get bumpy at those speeds, that I fear it may be Andy Greens last drive.
Have you watched the onboard videos from Thrust SSC? It was hugely unstable. Andy Green's ludicrous ability was all that kept it vaguely on track.

The new car has been designed using much more modern techniques to be stable within its performance envelope. It's the most strenuously designed LSR car ever, by a vast margin.

CallMeLegend

8,786 posts

211 months

Tuesday 22nd October 2019
quotequote all
My biggest concern at the moment is seeing how soft the pan appears to be. Hopefully it's just a case of it being a little churned up in the area of the technical camp, if it's that soft all over I think they will have real problems.

Sandpit Steve

10,247 posts

75 months

Tuesday 22nd October 2019
quotequote all
Onboard shot of the last time Green got the record - video gives the total distance travelled as fifteen miles. Amazing how calm he is, even when working the steering hard and giving a running commentary! Could watch this all day.

https://www.youtube.com/watch?v=zwh7Hlk6q1I

Wammer

394 posts

189 months

Tuesday 22nd October 2019
quotequote all
wab172uk said:
RumbleOfThunder said:
wab172uk said:
simon-tigjs said:
The design speed is 1050mph at the same location so if they're struggling to git 500mph runs in they've got a problem.

I was trying to work out how far down the run they would be at 500mph but then read your comment. 1050 mph ??? as in 17.5 miles per minute or 34 seconds at maximum velocity to clear the course. Add in terminal velocity to push through at circa 200mph even allowing for zero wind and the air doesn't get thinner like a rocket climbing, the sound barrier at circa 700mph, the fact the ground speed is not diluted like a jet fighter 200 feet off the ground, it might be a tad bumpy and a breath of wind is likely to be devastating to its stability, one does wonder if there has been a touch too much Michael Gove consumed on this project. It would be a staggering achievement. Go boys. Go !
So the current LSR is 760mph, set by Andy Green in a car that looks a lot wider and stable that this new car. Yet they want to increase the record by another 240mph?

As you say at that speed it's going to be a hell of a bumpy ride. I hope they do achieve it. Irrelevant as it is, but a great achievement for all those involved.

The car looks too narrow to me, and potentially unstable should it get bumpy at those speeds, that I fear it may be Andy Greens last drive.
I don't mean to be rude and it's a genuine question, do you have any credentials on the subject? I ask because there's quite a few people in this thread questioning if the team has enough space and stability to reach their goals, and I'd hope it's based on more that "ah well it doesn't look right to me" maths.
Did you read the "to me" bit in my post? That means it's my opinion. It's not based on having an engineering degree. It's not based on any engineering input at all. It's based on an observation. An observation that it looks quite narrow for a vehicle that is about to travel at near 1000mph.

I forget we live in 2019, where not only humour is frowned upon, in case it offends someone, but also having an opinion is deemed offensive unless backed up by engineering mathematics or an in-depth thesis.

RumbleofThunder. I'll make a note of your name, and from now on any comment or opinion you make on any car within this forum, I'll expect an in-depth engineering report to back up your opinion.


Edited by wab172uk on Tuesday 22 October 11:43
Wow you sound pathetic.

What people are forgetting is that Thrust SSC was run in black rock desert Nevada which was deemed to small an area for this attempt.

They took years scouting a location big enough and then drafted in volunteers to help clear the site.

At its peak Thrust SSC went at 341 metres per second.



CallMeLegend

8,786 posts

211 months

Tuesday 22nd October 2019
quotequote all
Wow, another PH thread degrades into a public slanging match, really tiresome, grow up both of you

thelostboy

4,586 posts

226 months

Tuesday 22nd October 2019
quotequote all
Galveston said:
Have you watched the onboard videos from Thrust SSC? It was hugely unstable. Andy Green's ludicrous ability was all that kept it vaguely on track.
Recognise that I may open a can of worms here, but you really think he has "ludicrous ability"?

It may be cynical, but surely he was initially drafted into speed records because it's great PR - he was a wing commander in the RAF.

And yes, he is used to high speed and you would like to think have better than average reaction time, but all the video footage shows of Thrust SSC is him gently sawing at the wheel. That's nothing compared to the control of snap oversteer that youngsters are reacting to in single seaters every race weekend.

Not knocking the guy, I just don't understand and happy to be enlightened. For me, the pat on the back is the willingness to be a guinea pig, and not really about ability.


CallMeLegend

8,786 posts

211 months

Tuesday 22nd October 2019
quotequote all
thelostboy said:
Galveston said:
Have you watched the onboard videos from Thrust SSC? It was hugely unstable. Andy Green's ludicrous ability was all that kept it vaguely on track.
Recognise that I may open a can of worms here, but you really think he has "ludicrous ability"?

It may be cynical, but surely he was initially drafted into speed records because it's great PR - he was a wing commander in the RAF.

And yes, he is used to high speed and you would like to think have better than average reaction time, but all the video footage shows of Thrust SSC is him gently sawing at the wheel. That's nothing compared to the control of snap oversteer that youngsters are reacting to in single seaters every race weekend.

Not knocking the guy, I just don't understand and happy to be enlightened. For me, the pat on the back is the willingness to be a guinea pig, and not really about ability.
Talking to Jeremy Bliss who was on the Bloodhound team for a while & Thrust SSC team during running, Thrust SSC was saved by the fin, Andy was kind of a passenger during the "dab of oppo" moments. So it was, according to him, largely aerodynamics that saved the car.


Edited by CallMeLegend on Tuesday 22 October 14:19

Mules

72 posts

148 months

Tuesday 22nd October 2019
quotequote all
RumbleOfThunder said:
wab172uk said:
simon-tigjs said:
The design speed is 1050mph at the same location so if they're struggling to git 500mph runs in they've got a problem.

I was trying to work out how far down the run they would be at 500mph but then read your comment. 1050 mph ??? as in 17.5 miles per minute or 34 seconds at maximum velocity to clear the course. Add in terminal velocity to push through at circa 200mph even allowing for zero wind and the air doesn't get thinner like a rocket climbing, the sound barrier at circa 700mph, the fact the ground speed is not diluted like a jet fighter 200 feet off the ground, it might be a tad bumpy and a breath of wind is likely to be devastating to its stability, one does wonder if there has been a touch too much Michael Gove consumed on this project. It would be a staggering achievement. Go boys. Go !
So the current LSR is 760mph, set by Andy Green in a car that looks a lot wider and stable that this new car. Yet they want to increase the record by another 240mph?

As you say at that speed it's going to be a hell of a bumpy ride. I hope they do achieve it. Irrelevant as it is, but a great achievement for all those involved.

The car looks too narrow to me, and potentially unstable should it get bumpy at those speeds, that I fear it may be Andy Greens last drive.
I don't mean to be rude and it's a genuine question, do you have any credentials on the subject? I ask because there's quite a few people in this thread questioning if the team has enough space and stability to reach their goals, and I'd hope it's based on more that "ah well it doesn't look right to me" maths.
Hi there, we've done a lot of work on the wheel design to find (what we believe) is the optimum shape for these runs. The V shape keel is designed to skid sideways way before they'd dig in and possibly case the car to roll. Watch this space for updates....



anonymous-user

55 months

Tuesday 22nd October 2019
quotequote all
If it was easy, anyone could do it!
My great uncle was chief engineer on the original thrust, driven by Richard Noble.
After the record run, I believe that calculations showed they were 15mph short of taking off.
These arrempts are on such tight computerised margins into unknown territory.
Good luck to a project that nearly came to a premature end.

anonymous-user

55 months

Tuesday 22nd October 2019
quotequote all
ChocolateFrog said:
No you're still accelerating but at a decreasing rate.
That's what I thought, but scarcely believed it - wow, that's power ...

anonymous-user

55 months

Tuesday 22nd October 2019
quotequote all
Sandpit Steve said:
Onboard shot of the last time Green got the record - video gives the total distance travelled as fifteen miles. Amazing how calm he is, even when working the steering hard and giving a running commentary! Could watch this all day.

https://www.youtube.com/watch?v=zwh7Hlk6q1I
Indeed - great temperament. Best of luck in the latest run

CallMeLegend

8,786 posts

211 months

Wednesday 23rd October 2019
quotequote all
Zygot said:
If it was easy, anyone could do it!
My great uncle was chief engineer on the original thrust, driven by Richard Noble.
After the record run, I believe that calculations showed they were 15mph short of taking off.
These arrempts are on such tight computerised margins into unknown territory.
Good luck to a project that nearly came to a premature end.
It was 7mh. You great uncle was Dan Ackroyd or Glynn Bowsher?

Tim bo

1,956 posts

141 months

Wednesday 23rd October 2019
quotequote all
Article is missing the usual:

Engine:
Transmission:
Power (hp):
Torque (lb ft):
0-60mph:
Top speed:
Weight:
MPG:
CO2:
Price:


Our readers want to know. What is the mpg? What is the CO2??

CallMeLegend

8,786 posts

211 months

Wednesday 23rd October 2019
quotequote all
Run profile 1 today.

RumbleOfThunder

3,566 posts

204 months

Wednesday 23rd October 2019
quotequote all
https://twitter.com/Bloodhound_LSR

Struggling to start the swine currently.

CallMeLegend

8,786 posts

211 months

Wednesday 23rd October 2019
quotequote all
RumbleOfThunder said:
https://twitter.com/Bloodhound_LSR

Struggling to start the swine currently.
Not a drama...yet. It did the same in Newquay when we tried to start it, but we hadn't shipped equipment quite as far. I was surprised they didn't try to start it over here before leaving.

MiniMan64

16,966 posts

191 months

Wednesday 23rd October 2019
quotequote all
They’ve the number for the AA right?