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Need to Know how AEFACT & MKAERO1 cards refer for Flutter analysis load steps?
Dear Team, I wants know how to create AEFACT & MKAERO1 card and how it referrence to the model to the load step (because loads like AEFACT & MKAERO1 card did n't mentioned in load steps) ? And need more explaination about AEFACT & MKAERO1 cards how it works? i try to review it , but it did n't work! OS-T: 8030 Flutter…
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TSTEP tab error in HyperMesh
Hi, Iam doing a transient heat transfer analysis in Hypermesh 2024.1. I have a question about the TSTEP definition. When I write the TSTEP card in 4–5 lines, I get the following error: *** ERROR #1031 *** in the input data: Too many continuation cards. When I reduce TSTEP to only two lines, this error disappears, but I get…
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Time Dependent PCONV definition for heat transfer analysis in HyperMesh
Hi, I'm doing a time-dependent heat transfer analysis in HyperMesh 2024.1. I need to define time-dependent convection. Instead of using CONVG, I'm defining CONVECTION. I entered the ambient temperatures using time-dependent SPC, SPCD, TABLED1 and TLOAD1. However, I'm not sure how to define the PCONV for a transient heat…
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Error when initializing HyperMesh CFD simulation
Hello everyone. I am currently trying to replicate the NACA0012 tutorial but with my own geometry file, since I would like then to use this method in other simulations. It seems that I am able to mesh the geometry correctly and apply the extrusion method in order to perform a 2D simulation. But when running the simulation…
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Is there an efficient way to simulate a 1.5m aluminum (200um rms) reflector at sub-THz frequencies?
Description: Hi there, the issue I'm having is that I've been using the LE-PO solver, but it doesn't work for lossy materials such as aluminum surfaces. I'm specifically trying to obtain a model that accounts for the surface material and surface roughness (200um for example) seen when using a horn-fed dish (single…
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Defining SPC temperature for transient heat transfer analysis in HyperMesh 2024.1
Hi, I am performing a transient heat transfer analysis in HyperMesh 2024.1. I have x, y, z, temperature data that I want to map using a Field. How can I define this in a time-dependent way? I am creating this thermal boundary condition with an SPC Card. However, when I try to define the SPC Card within the time step input…
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Problems in Pressure results in HyperMesh CFD
Hello all. I'm currently trying to simulate a NACA 0012 airfoil, yes, the same as the tutorial one. Instead, I'm simulating in 3D. I'm pretty sure my mesh is acceptable in order to have coherent results. I'm using the ''pressure farfield'' boundary condition for the simulation zone and the ''wall'' boundary condition for…
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Hypermesh CFD Forces calculation in Engineering Quantities
Hello everyone. I am currently performing CFD simulations on a reentry capsule. I am having problems in understanding how the Engineering Quantities - Forces work. What are the units of the force? Does the slice plane I use affect on the force´s value? I am working in milimetres in the sketch and mesh ribbons, and I am…
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Flutter Analysis with OptiStruct
Introduction Flutter is a dynamic aeroelastic phenomenon in which the aerodynamic loads on a flexible body couple with its natural modes of vibration to produce oscillatory motions with increasing amplitude. This may lead to catastrophic structural failure and hence structures exposed to aerodynamic loads must be carefully…
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Lunar Module Landing Simulation in MotionSolve and Twin Activate
INTRODUCTION Developing a lunar lander is a challenging task, as the Odysseus lander proved. Landers must be lightweight, while withstanding the stresses of the rocket launch and landing. Under ideal conditions, the lander would achieve zero velocity both vertically and laterally as the vehicle touches down. Practically,…
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How do I create design skeleton sheel under non-design shell?
Hello, community, I am working on an academic project about structural optimization in an aircraft fuselage. This project, inspired by the publication DOI 10.1007/s00158-015-1364-3, deals with structural optimization for shape maintenance. In the article, the author mentions that the model consists of a fuselage skin with…
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New cable modeling features in Feko - Part 2
Click here for Part 1 3. Shielded enclosure MoM/MTL feature The shielded enclosure is a specialisation of the schematic link and was first developed and then the schematic link generalised the connections to the full wave geometry. Figure 13: Shielded enclosure component represented in the Graphical User Interface (GUI).…
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New cable modeling features in Feko - Part 1
Abstract Altair Feko supports extensive cable modeling features, and this article will describe the latest features in more detail. The main cable feature is the combined MoM/MTL schematic link functionality. This allows accurate modelling of non-ideal (pigtail) shield connections to a device and radiation from common mode…
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Overview of Methods to Predict Radio & Radar Coverage and Interference using WinProp & WRAP - Part 2
Simulating Radio & Radar Coverage and Evaluating Interference This second part shows further cases how the radio & radar coverage can be predicted and the interference can be evaluated using Altair Feko with WinProp and WRAP technologies. Case 4: 6G Reconfigurable Intelligent Surfaces and Non-Terrestrial Networks Including…
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Overview of Methods to Predict Radio & Radar Coverage and Interference using WinProp & WRAP - Part 1
Simulating Radio & Radar Coverage and Evaluating Interference The future information society will rely on mobile communications using latest 5G, 6G and WiFi technologies to provide a wide variety of applications for which significantly higher mobile data throughputs shall be supported. Key for development and for…
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Realistic Examples of Feko Simulations with Creeping Waves
This white paper discusses simulations of antennas on a large airplane for cases in which the inclusion of creeping waves is important: antenna patterns that include the shadow region of the fuselage and coupling between antennas on opposite sides of the fuselage. Results obtained with the asymptotic method Faceted Uniform…
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Discover the Hypermesh Aerospace Ribbon Part 2: Systems tools
Introduction: The aerospace ribbon offers a collection of tools developed by the aerospace field team to solve specific challenges faced in the aerospace field. However, it is available and useful for users in any field. This series of posts will document the capabilities of those tools and provide sample models to try…
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Controlling Rocket Fairing Separation in Zero Gravity
CHALLENGE Controlling Rocket Fairing Separation in Zero Gravity: Challenges of Cable Retraction and Trajectory Stability. Ensuring Safe Separation Without Compromising Mission Integrity PREFACE Fairing separation in space requires precise control to avoid interference with a spacecraft’s trajectory. Physical testing of…
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Discover the Hypermesh Aerospace Ribbon Part 1: Compare Models
Introduction: The aerospace ribbon in Hypermesh offers a collection of tools developed by the aerospace field team to solve specific challenges faced in the aerospace field. However, it is available and useful for users in any field. This series of posts will document the capabilities of those tools and provide sample…
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Velocity vector - incidence angle of aero profil - MotionView
Hi, I'm working on an aero project on MotionView. I need to return the incidence angle for a lift force calculation. The incidence angle is the angle between the Chord line of my aerodynamics profil (represented by one of the direction of a marker in my model) and the vector of his relative velocity, Vr. To calculate Vr, I…
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Transform Airfoil Point Data into a Surface in Altair Inspire Using Python
Overview If you're working with airfoil point data and need a quick way to transform it into a surface in Altair Inspire, this Python script is perfect for you! It reads a CSV file containing the X and Y coordinates of an airfoil, scales them down (assuming the points are in millimeters), and creates a spline in Inspire.…
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Super Element Generator Script
Overview The included script is used to generate super elements and their associated residuals in HyperMesh. The script allows the user to select the desired residual elements, the condensation method, and the loadsteps to include. It also permits choosing a save file directory and a file name suffix. The script supports…
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Unpaved Runway Airplane Landing Simulation with MotionSolve, Twin Activate, and EDEM
Overview INTRODUCTION Designing an airplane for safe, controlled landings is one of the most challenging tasks aerospace engineers face. The landing gear must absorb the impact of landing and limit shock to the airframe. The airplane must remain stable and in pilot control during a landing under various weather conditions.…
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Landing Gear Simulation with Hydraulic Control in MotionSolve and Twin Activate
Overview INTRODUCTION Landing gear are employed on most aircraft for ground operations and landings. Engineers must design landing gears to handle the impact loads during aircraft touchdown and absorb the shock of the landing to prevent damage to the aircraft. There are three main types of struts used in the aircraft…
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Autonomous Quadrotor – Collision Avoidance Simulation using Twin Activate and MotionSolve
Overview INTRODUCTION As drones become increasingly prevalent, collision avoidance is emerging as a critical feature of drone technology. Drones are used for many purposes, ranging from surveillance to delivery, increasing the risk of mid-air collisions. To mitigate this risk, simulation tools like Altair’s MotionSolve and…
