US Government As Represented by the Secretary of the Army

Jennifer Cordes

Shana Groeschler

Jyeching Lee

Michael S Hollis

Michael S L Hollis

An inertial measurement unit may include a housing having an internal volume. The internal volume may have a dimension along an axis. A sensing element may be disposed in the internal volume. The sensing element may have a dimension along the axis that is less than the dimension of the internal volume. At least one piezoelectric actuator may be disposed in the housing adjacent the sensing element. When the at least one piezoelectric actuator is activated, it may prevent movement of the sensing element along the axis. When it is not activated, it may not prevent movement of the sensing element along the axis.

Guided projectile with motion restricting piezoelectric actuator

This invention provides a shock mitigation means that attenuates the high frequency energy transmitted to the floating element of an inertial measurement unit (IMU) device in a cannon launched guided projectile or cannon launched munition improving the ability of the IMU to survive the extreme forces of such cannon launched environment. The invention utilizes a crushable foam mitigator located in the IMU device's housing to interfere and apply a compressive force to the floating element of the IMU device, plus a rubber pad attenuator element placed above the foam mitigator to further tailor the transmission of shock energy to the floating element in the IMU device.

Growing community of inventors

Rockaway, NJ, United States of America

Jennifer Cordes