alt Hacker NewsYes! It's in contrast to gimbaled systems. Putting the measuring instrument on a gimbal simplifies the math and often improves accuracy, but at the expense that you need this large moving object that needs more power.
Replies
sandworm101 • 01/21/2025
Except that a gimbaled system, if enclosed in a single box/pod, can also be described as a strapdown system. The term speaks more to separate modularity than how the system functions internally.
imglorp • 01/20/2025
Gyros on gimbals have other drawbacks, such as drifting and gimbal lock.
➕ show 1 reply
The ultimate example of this is the incredibly accurate and expensive and complicated floating Advanced Inertial Reference Sphere used on the Peacekeeper ICBM.
https://en.wikipedia.org/wiki/Advanced_Inertial_Reference_Sp...