How Can Inertial Simulators Improve Aircraft Dynamics?
The booming aviation sector requires tools that can help enhance aircraft dynamics. The industry now has a growing number of high-performance and low-cost aircraft. This growth entails the need for more realistic flight simulators compared to what was used in the past. With different flight dynamics involved, the need to provide accurate results through live sky tests arises.
An inertial simulator can serve as a platform for safe, accurate, and repeatable testing in controlled laboratory environments. This technology is not only cost-effective but also faster than live sky tests.
Here’s how inertial navigation simulators (INS) can help with aircraft dynamics:
Continuous Monitoring of Navigational Data
Normally, the inertial measurement unit (IMU) calculates particular forces in delta-vs (∆Vs) and gyroscopes; both provide angular velocity. An INS uses these metrics to determine the attitude, velocity, and position of the user. The simulator uses the same parameters in calculating the location and the speed.
GPS receivers use inertial system, but they do not usually obtain the IMU metrics. They receive INS outputs instead. In some cases, receivers integrated with an IMU directly use the ∆V and ∆θ measurements.
Through this, INS users get navigational data without the required communication with a base station. The inertial simulator continuously monitors the acceleration and position of a vehicle to provide the measurements by gyros and accelerometers. These track the location based on a known starting point.
Observable Flight Dynamics Errors
Inertial simulators can help recreate the conditions of a real flight. An artificial computational environment can help test some aeronautical areas like navigation, flight dynamics, and aeroelasticity behavior.
An INS can test the stability and control of an aircraft. With high-fidelity sensor error models, an inertial simulator can allow the adding of errors into the IMU measurements. Additional forces may provide more structural deformation, ending in greater aerodynamic forces.
Here are the most catastrophic phenomena:
1. Divergence – Divergence refers to the static instability of an aircraft in flight’s lifting surface at the divergence speed. The divergence speed occurs where the elasticity of the lifting surface plays a crucial role in instability.
2. Flutter – This refers to an aeroelastic self-excited unstable vibration. The flutter occurs when the lifting surface absorbs the airstream energy. This motion involves both torsional and bending components.
Practice the many variations of flight dynamics with an INS. The provision of continuous data plus the possibility of errors can be made possible with an efficient platform.
The Powerful Test Platform
As one of the leading innovators in INS simulation, we have the CAST-4000 as one of our best contributions to satellite navigation. The inertial simulator generates GPS RF signals to simulate tightly or loosely coupled navigation systems.
Simulations are better with our CAST-4000. It can produce raw IMU measurements to a receiver when directly equipped with an optional interface. Users can also customize the interface based on particular requirements.
Complete six degrees of freedom motion generation capability and post-processing capability with our simulator. This can ensure a system’s performance remains compliant with ICDGPS-215/150.
Contact us today or browse our portfolio for more information.