Using ANSYS CFD to Analyze High-Lift Wing Design

Agastya ParikhFour years ago, as a high school sophomore, I began work on an independent project that explored ways to improve the performance of high-lift systems used on the Airbus A330-300. One of the biggest challenges facing me was how to best conduct experiments to assess the performance of the different designs. In prior years, I had conducted simple research on aircraft wing design and aeroelasticity using unpowered balsa models of the aircraft being tested. To employ this same method would be unworkable for the relatively complex systems of flaps and slats required by the Airbus aircraft. I would have needed to build a larger scale model or perform wind-tunnel testing — neither of which was viable because I did not have access to equipment of the complexity required. Continue reading

Landing Gear: An Aircraft System We Take for Granted

Watching the news recently I saw a video of an aircraft landing without one of its landing gear fully deployed. Wonderful job by the pilots and crew.

As it turns out, it is not that difficult to find other on-camera examples.

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Icing Again? Did I Miss the Summer and the Fall?

Looking back at my blogs this year, in February I talked about the ANSYS’ acquisition of the assets of NTI, Inc, which now enables us to offer the most comprehensive solution for integrated aerodynamic and icing simulations. The picture I shared was of a typical winter scene at a New Hampshire airport — the view of the de-icing process from inside an aircraft. Then in April, with Spring very much upon us, I talked about the upcoming event in Italy in partnership with CIRA. I am very pleased to report that this event went very well with over one hundred delegates and speakers from leading companies such as GE, Safran and Airbus. Thanks to all our speakers and to all who attended. So why do I think I may have missed the summer and the fall? Continue reading

Accurate Spray-Wall Interaction Predictions with ANSYS Fluent 16.0

Computational Fluid Dynamics (CFD) has become an integral part of product design and development. Today, CFD is extensively used across industries like Aerospace, Automotive, Marine, Oil and Gas, Electronics, Health care, Process and Infrastructure. While CFD tools provide detailed engineering insights and shorter product development cycles at reduced cost, CFD community is constantly working hard to improve accuracy, speed and ease of use of these tools. Complex physical phenomenon such as detailed chemistry, primary atomization, electro-chemistry, icing formation are constantly investigated and newer, better and accurate numerical models are introduced in CFD tool. Continue reading

Springing into the Future of Aerospace Transport

The recent and very significant fall in oil prices has been very welcome as far as the cost of heating is concerned. Sure the days are becoming perceptibly warmer and there is a feeling that we have finally turned the corner from Winter to Spring. While I personally welcome the reduced expenditure, I am glad to see that this recent downward shift in oil prices has not caused the aerospace industry to lose focus on the long term, interconnected objectives of reducing fuel usage and environmental impact. Continue reading

DO-178C – Aeronautics Industry Moves To New International Software Safety Regulation

Embedded software in today’s aircraft is becoming continually larger and more complex. For example, the volume of embedded software in the A300 was a few thousand lines and it is in the order of 100 million in the A380. Moreover, a sizeable part of this software is safety critical. Hence, delivering certified code is one of the critical path design elements that is growing in significance. Continue reading

Don’t Call Them Blimps!

aeroscraft image

Courtesy Aeros

Many of us based in North America were glued to the screen recently to watch the annual Super Bowl event. Almost synonymous with this sporting extravaganza is the Goodyear Blimp. But this isn’t confined to the Super Bowl. You will find these lighter than air vehicles in the sky above almost any major sporting event around the globe. Not only do they add to the spectacle but their long loiter capability contributes significantly to the coverage we all enjoy. Continue reading

ANSYS Adds Aircraft Icing Simulation

aircraft icing simulationLast week, I was preparing for a visit to customers in the Washington DC area. This involves only a short flight from my office in New Hampshire. Then came winter storm Juno and with it myriad flight cancellations — and the end of my trip before it had even started. While these events can be frustrating at the time, the priority is obviously safety. It is because aircraft designers and airline operators follow strict aircraft certification guidance from the US Federal Aviation Administration (FAA) and other regulatory bodies that air travel is as safe and reliable as it is today. Continue reading