They're called selenitesOh, I was thinking anti-lock brakes on the moon rover. Wouldn't want to cause a political incident by rear-ending a moon citizen.
They're called selenitesOh, I was thinking anti-lock brakes on the moon rover. Wouldn't want to cause a political incident by rear-ending a moon citizen.
Anyone have any idea where to watch this online? I can't find it. Yes, I googled it.Yes, the theorem has been proven by Andrew Wiles. There is a PBS documentary about. It is quite a story in its own right.
They were developed for aircraft because of the desire to takeoff and land in shorter distances on questionable surfaces. They were first developed in 1929 and by the late sixties nearly all large or fast aircraft used them. On the F-15, for instance, if you lose utility hydraulics you still have the JFS bottles that can provide hydraulics to the brakes, but you do not have ABS capabilities. As a result, any pilot that loses the utility hydraulics (Utility-A, IIRC) is extremely hesitant to land where they will have to use the brakes because it is very difficult to keep the plane on the runway and a high-speed departure off the side of a runway seldom ends well. So the preferred method is to divert, if possible, to a field that has arresting gear or other barricade equipment.So they do what in the air now?
Having been developed for craft that work in near frictionless environments is that why they don't work so well on the ground with machines that actually need to stop in a specific distance before crashing into something?
1929!They were developed for aircraft because of the desire to takeoff and land in shorter distances on questionable surfaces. They were first developed in 1929 and by the late sixties nearly all large or fast aircraft used them. On the F-15, for instance, if you lose utility hydraulics you still have the JFS bottles that can provide hydraulics to the brakes, but you do not have ABS capabilities. As a result, any pilot that loses the utility hydraulics (Utility-A, IIRC) is extremely hesitant to land where they will have to use the brakes because it is very difficult to keep the plane on the runway and a high-speed departure off the side of a runway seldom ends well. So the preferred method is to divert, if possible, to a field that has arresting gear or other barricade equipment.
They used a drum and flywheel system in which the speed of the drum (mounted on the wheel) was compared to the speed of the flywheel (which, I'm assuming, was air driven) and if the drum was rotating more slowly than the flywheel a valve would open reducing the pressure to the brakes. As primitive as this system was, landing distances were reduced by about 1/3 and flat-spotted tires were virtually eliminated.1929!
That was waaaaayyyy before electronics got involved in aircraft control...
How where they able to sense and control it? Hydraulics, pneumatics?
That's part of what frustrates me about the Arduino Effect. Nobody tries to do clever or elegant designs, they just start on the logic diagram for a microprocessor program.It's actually quite amazing how many quite sophisticated things were done in the days before electronics.
Did you just sire a new term?That's part of what frustrates me about the Arduino Effect.
Prior art, but different context.Did you just sire a new term?
It was written four years ago, but it could have been written yesterday as well - all would still be true and feel current.
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