Scott Moore wrote:
john smith wrote On 12/03/05 11:52,:

LASER ring gyros are certainly small enough, I don't know how much they
cost. If the US military can put them in artillery shells, they should
be available for light GA inertial nav systems.


Try looking up the price of a 3 axis FOG (Fibre Optic Gyro, the cheapest type
of laser gyro). Hint: the US military has a lot of money.

Funny. I remember a lot of talk about fiber optic gyros back in the
mid-1960. They still haven't made in roads as predicted.