Electronics & Connectivity - March 1, 2012 - 7

as well as the certified EVS that offers the pilot operational landing credit in low-visibility conditions. A variety of weather conditions, including low visibility and strong crosswinds, were found on ILS (instrument landing system) approaches at six different airports. The research findings revealed pilot performance equivalency when the pilots flew with the IR imagery on the head-up EFVS and the head-down CVS display. On each approach, all pilots were able to strictly conform to the necessary flight criteria and maintained a stable approach through touchdown and rollout. The lateral and vertical tracking errors in both the CVS and HUD conditions met the established criteria for approach and landing in weather minima as established by the FAA. The subjective ratings mirrored the objective data indicating that both displays clearly supported the pi-

lots’ tasks of verification of the runway environment and their transition to the actual runway for landing. Workload ratings indicated that both display formats allowed the pilot to maintain low workload levels even in low-visibility conditions and on high-workload approaches with crosswinds. It is quite promising that the CVS display faired equally well as the certified HUD with such limited practice, especially since the pilots were highly practiced with the HUD, which is used on a regular basis on the G450. Clearly, the CVS adds performance benefits by priming the pilot with the picture of the environment prior to breakout and provides a means for a stable approach through the use of the path-centered display.
This article is based on SAE International tech paper 2011-01-2525 by Patricia May Ververs, Gang He, John Suddreth, Rob Odgers, Jary Engels, Ivan Wyatt, Keith Hughes, Christopher Hamblin, and Thea Feyereisen of Honeywell International Inc.

Driveline Modeling and Simulation: Challenges and Solutions for Hardware-in-the-Loop Simulation
Wednesday, March 21, 2012: 10 a.m. EDT / 7:00 a.m. PDT / 2 p.m. GMT FREE 60-Minute Live, Interactive Webcast! Complex driveline models present unique difficulties to engineers wishing to do control design and validation via HIL and SIL simulation. Often, there is a trade-off between model fidelity and simulation speed that may necessitate model approximations and result in reduced effectiveness of the designed controllers. Join us to learn about the role of Modelica and acausal modeling in achieving manageable physical models and how symbolic formulations can increase simulation speed without reducing model fidelity. Attendees will be invited to interact with the experts during the Q&A portion of the webcast.

Industry Expert Participants:
Dr. Derek Wright MapleSim Product Manager, Maplesoft

Dr. Orang Vahid Senior Modeling Engineer, Maplesoft

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SAE electronics+connectivity

March 1, 2012

http://www.sae.org/servlets/digitalmag?LINK=DMAG15569964A2M5462&cid=cidcode

Electronics & Connectivity - March 1, 2012

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