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Porsche shatters Nurburgring record

CrushBug says...

Can anyone explain the Boost bar there to me? That didn't look like turbo boost, as it was almost never up, but seemed to fire coming out of a corner.

Rockwell Retro Encabulator

Rockwell Retro Encabulator

Rockwell Retro Encabulator

Rockwell Retro Encabulator

Why Planes Don't Fly Faster

jimnms says...

There is so much wrong with this video I don't even know where to start. First, there are only two types of aircraft engines, piston and turbine. When a turbine is used to drive a propeller, it's called a turbo prop. When he is talking about turbo props, he shows pictures of a piston driven propeller aircraft (Cessna 41x), and piston engines are the most common type of engine used on propeller driven aircraft, not turbo props.

He mostly gets it right about turbo jets, except again, every aircraft he shows when talking about turbo jets uses a turbo fan (the F-15 and F-16 both use afterburning turbofan engines). They get their thrust from the hot expansion of exhaust gasses, but he gets it wrong with turbo fans, which get most of their thrust from the bypass air from the fan.

The Bose Suspension In Action

Payback says...

The first thing you need to understand is the suspension doesn't use springs or shock absorbers. The whole thing is linear electric motors on each control arm. (Great huge solenoids) The suspension moves up and down independent of weight or inertia. It works fast enough that it starts to compensate for bumps BEFORE the tires hit the bump.

This system has more in common with a 1965 Impala with hydraulic rams bouncing in a parking lot than a conventional car suspension.

For the most part, it scans the road ahead.
See a dip down? Extend the wheel.
See a bump up? Retract the wheel.

I'm fairly certain the ollie was manually instigated by the driver.
Much like hitting the turbo boost on K.I.T.T. it's just a button and the computer does the jump.

Press button:
Retract the wheels, starting with the front. (to maximize suspension travel)
Push down hard on front, then rear wheels. (Launch car up)
Retract front then rear wheels. (tuck the wheels up)
*car passes over 2x4*
Push down on front, then rear wheels.(ready for touchdown)
*tires hit pavement*
Retract front, then rear, wheels slowly to absorb impact.

MilkmanDan said:

I'm very confused by that bit. Was that bunny hop activated by the driver (how?) or autonomous (and again, how)?

SpaceX Lands Stage 1 on Land!

Ashenkase says...

As was mentioned above, the cost of the fuel is a non-starter. Currently SpaceX uses a Kerosene / Liquid Oxygen fuel mix.

After the anomaly (the space industries way of saying accident) in June SpaceX did a complete vehicle review. They are now using a more advanced technique to cool the LOX which means for a denser LOX liquid in their tanks, which ultimately means they have more oxidizer on board for their flights now.

Coupled with the LOX improvements they have made upgrades to the engines which means 30% greater efficiency. Basically the horsepower per engine has increased.

This means they can get their payloads to orbit plus have more then enough fuel left over in stage 1 to return it to land.

The greatest efficiency comes from returning the stage(s) and then reusing them in future launches (not proven yet). ALL launchers (u.s, soviet, indian, ESA, Japan, etc) ditch ALL of their hardware into the ocean when getting payload to orbit. Bye, bye multi million dollars worth of engines and hardware.

If SpaceX can turn that scenario on its head and reuse those stages and MORE importantly the engines they will cut their costs per launch by a substantial amount. Ultimately that means cheaper per pound cost to get material into orbit.

All of the media uses the word "explosion" when describing the June anomaly which is funny because there was never an ignition of onboard fuels.

The LOX tanks have smaller Helium tanks inside them. The helium is released during launch. The helium rises in the LOX quickly, expands and pressurizes the tank to ensure the LOX is "squeezed" into the pipes in order to keep up with the turbo pumps.

One of the struts holding a helium tank inside the LOX tank failed. The helium tank shot up and blew threw the top of the LOX tank and took a good part of the top of the stack off. The engines actually fired for a few seconds after the anomaly and then sputtered out. The rest of the vehicle at this point is still fairly intact.

Without proper structural integrity the vehicle started to veer off course, dynamic pressures built up and the vehicle was essentially ripped apart by those forces.

At 3:20 the Helium tank rips off its struts. At 3:27 the remainder of the vehicle disintegrates:

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

SpaceX mentioned that in June, the dragon capsule continued to relay telemetry until it smacked into the ocean. If the Dragon had better software onboard it would have detected the anomaly and recovered with chutes. Elon said that software would be active on Dragons from now on.

VoodooV said:

Thanks for the responses, gang. I guess I'm just surprised that we're going this route since it seems so inefficient. Kinda like the skycrane for the curiosity rover seems so convoluted and so much could go wrong. Which reminds me, it amuses me that they refer to the earlier explosion as an "anomaly"

Typical Evo wunderkid...

Payback says...

Don't have to. I have white privilege.

Not really seeing any disagreement in your statement though...

You own an EVO or WRX. Do much rallying? Driven in Pike's Peak? Do you, as the "Bellend" in the video does, just bomb around town acting like you're the shit because you're going fast and getting decent gas mileage?
If you don't do any of that... you're a hipster. You completely wasted your money for "prestige". An EVO or WRX deserves to be driven. It's what they're designed for. At least the douchebag is getting close to using the tool properly.

It's like people who buy 1000cc twin turbo crotch rockets. Either they drive like retarded psychopaths, or they just like that people THINK they drive like retarded psychopaths.

Putting anything "race day" on the street without racing it is sad. Racing it on the street is stupid.

If -and I doubt it- you've actually purchased your vehicle, and you use it properly, congratulations, you're an exception. Nothing is black and white, but if you see one of those cars driving around town, it's a hipster or a douchebag behind the wheel, and you, as the exception, KNOW I'm right.

CrushBug said:

Apparently, just for owning one, I have been called a hipster and a douchebag. You don't even know me.

eric3579 (Member Profile)

BoneRemake (Member Profile)

Cellphone Has Incredible Effect on Magnetic Ore

Sniper007 says...

Hard to get even slightly emotionally invested in something so turbo fake. It would have been a good video if he would have had a reveal at the end.

VideoSift Sarzy's Top Ten Movies of 2014

siftbot says...

Sarzy's review of "Hearthstone: Heroes of Warcraft" has been added as a related post - related requested by eric3579.

Sarzys review of "The Stanley Parable" has been added as a related post - related requested by eric3579.

Sarzy's Short Film: M is for Marriage has been added as a related post - related requested by eric3579.

Sarzy's Nyan Fresh Prince of Bel-Air has been added as a related post - related requested by eric3579.

Fired! has been added as a related post - related requested by eric3579.

Small SiftBot Glitch: Wrong error message (Sift Talk Post)

Arrows A22 F1 car vs other track day cars at Circuit Zolder



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