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Speakers Corner


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Drive by wire


carver

Likes # 0

I don't know how any body else feels about this enter link description here but I would definitely not feel at ease driving one of these, think I would be waiting for the dashboard to tell me that "Windows has experienced an error and needs to close" while doing sixty on a windy road.

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onthelimit1

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Most times that you fly now, aircraft controls work the same way. No, I don't like it either!

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wiz-king

Likes # 0

"In addition it suggested that the development would "insulate" motorists from disturbances caused by unnecessary feedback."

I was taught that getting feedback from the road was a good thing!

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Strawballs

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Any body that say they would not drive a car with this best not fly anymore because it's been a long time since big airliners have had any but for their controls.

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WhiteTruckMan

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Mixed feelings. On the one hand the technology is well tried, tested and proven. On the other, it is currently used in a tightly regulated enviroment (aviation). I see no problems at all if such systems in cars are serviced and maintained to aircraft standards.

But we all know that isn't going to happen. Because the servicing costs will be too expensive, being tied in as they will be with specialist training and equipment. So people will put off scheduled servicing tasks on cost grounds. especially on a 3rd or 4th owner vehicle. Which is just what happens now when the engine management light comes on on older cars.

Of course it could be made mandatory, as it is with ABS fault lights at MoT time. But that will merely make these cars unaffordable to run in the long term, with a subsequent tanking of their used values.

Almost every day I drive modern trucks that are amazingly complex and sophisticated vehicles, far more so than most people realise. They are crammed full of electronics, especially german trucks, and there always seems to be something wrong. It's actually a noteworthy event for me to drive down the road without something bleeping, flashing or displaying some notification notice on the message display screens. And thats with vehicles less than 6 months old!

No, I'm afraid the increasing complexity is counter productive. It might be a bright idea, and look good on the drawing board and the showroom, but it shouldn't be used for usage sake.

WTM

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Mr Mistoffelees

Likes # 0

Fly-by-wire is, I am sure, the only practical solution for modern large aircraft.

As for cars, rack-and-pinion steering is a simple, efficient and reliable system that is very well proven and works very well. What is the point of replacing it with a complex electronic system?

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interzone55

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Any body that say they would not drive a car with this best not fly anymore because it's been a long time since big airliners have had any but for their controls.

Aeroplanes have three computers for everything, so even if two fail, there's a backup. This is because a) laws require it, b) the planes cost a lot of money, so they can afford to install all these safety features.

I doubt that cars will have back up computers for the back up computers because for most people cost is the primary concern - as is demonstrated in the thread on child labour.

Every car these days has a computer that manages the engine, this helps keep fuel consumption and emissions low. I've had a couple of these fail on cars, and normally when it happens the engine drops into safety mode and revs are limited to keep the engine safe. On one occasion I had to take the manufacturer & dealer to court because they wouldn't swap the computer out to make the car drivable again, because even this £500 component was too expensive to swap out, it would have wiped out the manufacturers profit on the car. I won and the car was scrapped.

I can't see them putting three computers to do one job in a car any time soon...

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carver

Likes # 0

fourm member hate to tell you this but flying a plane and driving a car are completely different, you may not have noticed but you normally do not have another aircraft closer than half a mile.

You certainly do not have aircraft passing within 6 foot of each other and if something does go wrong then I'm sorry you are so close to another car no backup system can take over that quick, with out feedback how can you tell if you have a puncture or some thing else is wrong.

But with the way some people drive maybe it would be better to take complete control away from then, I noticed one thing in Nissan's article about you can position the steering wheel where ever you want, including the back seat. Well my car is controlled from the passenger seat already if the wife had any thing to do with it.

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Forum Editor

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carver

"flying a plane and driving a car are completely different, you may not have noticed but you normally do not have another aircraft closer than half a mile."

On the other hand, you may not have noticed that you don't have 300 ton cars travelling at 500 miles an hour with a few hundred passengers on board. Commercial passenger jets must maintain a vertical separation of at least 1000 feet below 29,000, and a horizontal separation of 5 nautical miles (if flying at the same altitude). At altitudes above 29,000 feet the vertical separation must be no less than 2000 feet.

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Woolwell

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carver - The USAF Thunderbird display team uses the F16C which has fly-by-wire and they certainly fly close together.

There is nothing wrong with the technology but it does require a back-up system.

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Woolwell

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carver - "how can you tell if you have a puncture". You may not be aware of the tyre pressure monitoring systems. In the EU from this November all new cars must have a tyre pressure monitoring system with a display on the dashboard.

Pre-crash systems have also been introduced eg the Honda Collision Mitigation Brake System

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