One subtle advantage that models created in OpenVSP inherit, as opposed to those generated using more conventional CAD packages, is that the geometric surfaces are comparatively clean and watertight representations suitable for analysis from the outset. Highlights included presentations covering rapid aircraft structural modeling, high-lift prediction, and meshing for CFD. mass properties and aero reference tools, a vortex lattice solver, an interactive wave drag prediction tool, etc.) as well as a number of presentations from users demonstrating how they have incorporated OpenVSP into their own work. The second and third days of the workshop provided an overview of physics-based analysis capabilities packaged with OpenVSP (e.g. In a testament to OpenVSP's modeling capabilities, the group managed to put together a representative model of the Predator B in about 45 minutes. While Fredericks was demonstrating his approach and explaining each step in the modeling process, those in the audience provided assistance by gathering publicly available information related to the aircraft's design. This was followed by an interactive session where attendees collaborated with presenter Bill Fredericks in a hands-on demonstration where OpenVSP was used to create a Predator B model based on a suggestion from one of General Atomics Aeronautical Systems' employees in attendance. They presented the design goals and motivation for continued development of OpenVSP, and then introduced the various 3-D parametric modeling operations and how they are invoked within the GUI. The first day of the workshop OpenVSP developers introduced the software. The workshop provided a venue for OpenVSP developers and users (about 65 to 70 attendees in total) to learn more about the software from a range of topics including introductory and advanced model building, recent developments in the software, and several use cases highlighting the diverse utilization of OpenVSP. NASA Langley hosted its third OpenVSP Workshop 2015 at the National Institute of Aerospace in Hampton, Virginia on 11-13 August. These models may then be analyzed using tools packaged with OpenVSP, exported for further manipulation in other geometry programs, or used in higher fidelity computer-aided engineering (CAE) applications such as finite element analysis (FEA) or computational fluid dynamics (CFD). OpenVSP is an easy-to-use, conceptual-design-centered, and parametric aircraft design tool that enables designers to quickly create 3-D aircraft models. When organizations' activities do not span all three phases of aircraft design, and they cannot expend the resources, expertise, or time typically required for modeling with traditional CAD packages, NASA Langley's team has created a more suitable alternative with Vehicle Sketch Pad (OpenVSP). However, the use of CAD software is particularly ill-suited during conceptual design, where design tends to be very open-ended and typically involves large changes to the geometry definition in order to explore a vast design space. In doing so, they are able to carry the design forward into each subsequent design phase - a distinct advantage that may not be realized by others whose activities may be more focused. This is especially true for geometry definition tools where aircraft manufacturers will typically use computer-aided design (CAD) software throughout the product's lifecycle. Organizations whose activities span all three phases are inclined to select tools that can be reused throughout each phase of product development. The varying levels of detail and resolution in each of these design phases drives adoption for a myriad of geometry creation and analysis tools. Integrating OpenVSP and Pointwise for High-Fidelity CAE in Conceptual DesignĪircraft design is typically segregated into three distinct phases: conceptual design, preliminary design, and detailed design.
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