1. SAE AC&GS Committee Meeting South Lake Tahoe, NV March 2006
Hoh Aeronautics, Inc. Research Update David G. Mitchell Technical Director
SAE AC&GS Committee Meeting
South Lake Tahoe, NV
March 2006

2. MUAD Envelopes
Originally developed to define “Maximum Unnoticeable Added Dynamics” for airplane pitch response
Evaluated for application to helicopter roll response in hover
Advanced Rotorcraft Technology (ART) fixed-based simulator with FLIGHTLAB® model
Several baseline roll configurations
One pilot, one task
Contract for US Army Airworthiness Engineering Directorate to Develop Methods for Simulation Validation

3. Unnoticeable Added Dynamics Compared with MUAD Envelopes

4. Allowable Error Envelopes
Functions of response characteristics of aircraft before dynamics are added!
Envelopes have been normalized by roll damping derivative
A lot of work still to be done:
More pilots
Other tasks
Moving-base simulator

5. A New Product Line: HeliSAS
Developed for NASA under a Phase II SBIR
Prototype flying on company Robinson R44
New product: The Chelton HeliSASTM Autopilot
Announced at HeliExpo 2006 this week

6. Website: http://www.cheltonflightsystems.com/HeliSAS.html