A Navigator for America's Deadliest Cold War ICBM

Re:A Navigator for America's Deadliest Cold War ICBM by baybal2 on Friday October 11, 2019 @05:15AM (#21222706)

Nowadays you can buy a toy quadcopter, and get a single chip gyro with on-package computer and performance of mid-cold war ICBM INS.

Microelectronics is a tough industry. Fear of communism can not match the fear of loosing to a commercial competitor in a half trillion dollar industry.

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Re:A Navigator for America's Deadliest Cold War ICBM by dekhn on Friday October 11, 2019 @08:16AM (#21223568)

chip gyros aren't as accurate as this in practical reality. they give up a lot of accuracy. you need good, hard mass and well-machined metal.

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Re:A Navigator for America's Deadliest Cold War ICBM by dreamcompiler on Friday October 11, 2019 @09:37AM (#21224205)

Not even close. Single chip gyros and accelerometers are many orders of magnitude less accurate. INAV with microelectronic gyros and accelerometers is pointless except for very short distances with frequent GPS corrections. Double integration is a cruel bitch.

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Re:A Navigator for America's Deadliest Cold War ICBM by baybal2 on Saturday October 12, 2019 @05:24AM (#21231711)

I may have stretched that, but proper mems INS can have less than 1 degree per hour drift easily. That is solidly in the MRBM level accuracy.

And what is in the lab now, can go below 0.1

It was long believed that gyroscope precision is limited by its size, but as what latest gyros show, it's not.

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