An electronic lateral acceleration indicator is provided that gives improved
visual
performance over previous electronic indicators. In a first embodiment, the lateral
acceleration indicator includes a fine tuning element and a high level lateral
acceleration element. The fine tuning element provides a precise reading of low
level lateral acceleration. This allows a pilot to make small corrections to eliminate
small amounts of lateral acceleration. The high level lateral acceleration element
provides a strong visual indication when relatively high lateral acceleration is
present. The strong visual indication provided by the high level lateral acceleration
element increases the probability that the pilot will be made aware of the lateral
acceleration. Thus, the lateral acceleration indicator of the present invention
provides both fine tuning capability and a strong visual warning of large lateral
acceleration to the pilot. In a second embodiment, the lateral acceleration indicator
includes a lateral acceleration element that expands as lateral acceleration increases.
This allows the pilot to quickly determine if lateral acceleration is occurring.
Additionally, the rate of expansion in the lateral acceleration element relative
to the increase in lateral mistrim can be tailored to provide improved visual scaling
to the pilot.