Still Waters Posted September 30, 2017 #1 Share Posted September 30, 2017 The Bloodhound supersonic car has been fired up for the first time - and worked a treat. Engineers turned over the vehicle's Eurofighter jet engine in a "tie-down" test at Cornwall's Newquay airfield on Friday. It worked flawlessly, sending a big orange flame out of the rear nozzle. The intention is for the car to begin some "slow-speed" running - about 200mph (320km/h) - at the end of next month. http://www.bbc.co.uk/news/science-environment-41446557 2 Link to comment Share on other sites More sharing options...
Black Monk Posted October 1, 2017 #2 Share Posted October 1, 2017 (edited) Let's hope it smashes the land speed record and becomes the first land vehicle to hit and exceed 1000mph. It will be a great British feat. Edited October 1, 2017 by Black Monk Link to comment Share on other sites More sharing options...
ROGER Posted October 2, 2017 #3 Share Posted October 2, 2017 After a while isn't the point of the fastest lose importance ? As a ground speed I mean . What practical lessons are learned for this ? Link to comment Share on other sites More sharing options...
Jon the frog Posted October 2, 2017 #4 Share Posted October 2, 2017 ''The actual record attempt is due to take place in October on a 1.7-mile strip of runway in Newquay'' How in the world they can achieve something on 1.7miles... probably a typo ! 1 Link to comment Share on other sites More sharing options...
Jon the frog Posted October 2, 2017 #5 Share Posted October 2, 2017 ''The actual record attempt is due to take place in October on a 1.7-mile strip of runway in Newquay'' How in the world they can achieve something on 1.7miles... probably a typo, ehum no an error, it was just to test the jet engine... Link to comment Share on other sites More sharing options...
Lobotomy Posted October 2, 2017 #6 Share Posted October 2, 2017 (edited) 4 hours ago, ROGER said: After a while isn't the point of the fastest lose importance ? As a ground speed I mean . What practical lessons are learned for this ? Indeed, the Hyperloop is pointless. Actually a lot can be garnered from this with regards to things such as friction, frameworks and structures, suitable materials, rigidity, hardness of materials, expansion and contraction of air, aerodynamics (including the Navier–Stokes equations), centres of gravity, motions, implementation of computer-aided applications, rocket designs etc etc need I go on? Edited October 2, 2017 by Lobotomy 1 Link to comment Share on other sites More sharing options...
Noxasa Posted October 2, 2017 #7 Share Posted October 2, 2017 (edited) I had the same question about setting the record on a 1.7 mile strip but after reading other articles (https://www.motor1.com/news/58673/133151-bhp-bloodhound-ssc-revealed-in-final-guise-will-attempt-to-hit-1000-mph/) on the subject it turns out the 1.7 mile strip will only be used to do an initial 200mph test run before going to Africa to do a record breaking 763+ (but sub 1000) mph run before tweaking the system for a 1000mph attempt in the future. According to the article the acceleration portion of the 1000mph run will be 55 seconds long with a deceleration phase making the entire run just over two minutes. According to my calculations that's less than a G of acceleration forces (8.13m/s2) which surprised me, I first thought it would be more than that. That means the acceleration phase would take just over 7.6 miles and probably a bit longer distance to decelerate. I wish them luck, not sure I'd want to be driving it. Edited October 2, 2017 by Noxasa Link to comment Share on other sites More sharing options...
Tom the Photon Posted October 2, 2017 #8 Share Posted October 2, 2017 This experiment will determine the limits of current technology. Preliminary tests are proving positive and, having met Andy Green and Ron Ayers, I'm sure they will not attempt this until they're reasonably certain of success. The limiting factor is no longer the thrust or the g-forces created in the wheels: the biggest problem is finding a flat straight they can safely accelerate and decelerate on. There is no artificial surface long enough. if they boosted the thrust to achieve top speed in the distances available the pilot would suffer unbearable g-forces and probably die. I'm sure Andy doesn't plan that. Link to comment Share on other sites More sharing options...
paperdyer Posted October 2, 2017 #9 Share Posted October 2, 2017 (edited) While I hope nothing bad happens, this is another example of a "barrier" that someone deems has to be broken. What are the practical applications of this feat? Am I missing something? Or is it the thrill of victory or the agony of defeat? Edited October 2, 2017 by paperdyer Link to comment Share on other sites More sharing options...
toast Posted October 2, 2017 #10 Share Posted October 2, 2017 11 hours ago, Lobotomy said: Actually a lot can be garnered from this with regards to things such as friction, frameworks and structures, suitable materials, rigidity, hardness of materials, expansion and contraction of air, aerodynamics (including the Navier–Stokes equations), centres of gravity, motions, implementation of computer-aided applications, rocket designs etc etc need I go on? All known already. 1 Link to comment Share on other sites More sharing options...
Ozymandias Posted October 2, 2017 #11 Share Posted October 2, 2017 This is just a piece of hype, probably to encourage investment in the project. Statically testing a jet engine, whether it is in the original aircraft, on a testbed or rigged into a prototype land vehicle, is no great acievement. The true challenge comes when it undergoes dynamic testing when powering a wheeled vehicle at speed. Even then the real problems lie with the vehicle dynamics rather than with the engines operational performance. But good luck to them. Link to comment Share on other sites More sharing options...
Haroldbattschits Posted October 3, 2017 #12 Share Posted October 3, 2017 To all those that question "why"- if you have to ask then you won't get it. And you will probably live a completely mundane life. Why should we go to the moon? Why should we send rockets to Mars? Why not? Human nature usually inspires such undertakings, but only the great thinkers and adventurers will succeed at moving humanity forward. 1 Link to comment Share on other sites More sharing options...
Lobotomy Posted October 4, 2017 #13 Share Posted October 4, 2017 On 02/10/2017 at 4:56 PM, toast said: All known already. And how, might I add is the Navier–Stokes equations 'known' already when according to the Clay Mathematics Institute, it's one of the seven most important open problems in mathematics and have offered a US$1,000,000 prize for a solution or a counterexample? 1 Link to comment Share on other sites More sharing options...
Black Monk Posted October 7, 2017 #14 Share Posted October 7, 2017 On 02/10/2017 at 1:12 AM, ROGER said: After a while isn't the point of the fastest lose importance ? As a ground speed I mean . What practical lessons are learned for this ? What practical lessons are learned from the longest time spent in a bathtub of baked beans or the most stinging nettles eaten in five minutes? Link to comment Share on other sites More sharing options...
godnodog Posted October 9, 2017 #15 Share Posted October 9, 2017 "1,000mph car successfully fires up jet engine" Impressive, I too succeeded in turning on my toaster this morning Link to comment Share on other sites More sharing options...
Mark56 Posted October 14, 2017 #16 Share Posted October 14, 2017 This is exactly what I need to get to work on time. Link to comment Share on other sites More sharing options...
internetperson Posted October 14, 2017 #17 Share Posted October 14, 2017 That's definitely not a car, it's a rocket on 4 wheels. Regardless very cool. Whoever actually has the balls to drive that thing 1kmph has my respect. Link to comment Share on other sites More sharing options...
Black Monk Posted October 15, 2017 #18 Share Posted October 15, 2017 Link to comment Share on other sites More sharing options...
Still Waters Posted October 27, 2017 Author #19 Share Posted October 27, 2017 Quote The Bloodhound supersonic car is aiming to break the world land speed record - and be the first to reach 1,000mph. In development since 2008, it is being tested at Newquay airport at speeds of up to 200mph. Experience the car in 360, and take a seat where fighter pilot Andy Green sits. http://www.bbc.co.uk/news/uk-england-cornwall-41749466 1 Link to comment Share on other sites More sharing options...
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