Rapid Aerodynamic Simulation with Altair FlightStream
Analyze aerodynamic performance faster using advanced panel methods without the cost of full CFD simulations
What is Altair FlightStream?
Altair FlightStream is an all-in-one aerodynamic simulation platform used to manage setup, solving, and results within a single environment. It is built around a modernized panel-method solver with surface-vorticity, compressible-flow, and viscous-coupling capabilities, making it well suited to rapid aerodynamic studies across powered and unpowered vehicle configurations. Its workflow centers on surface-based meshing rather than volumetric meshing, with support for automation, batch execution, and aerodynamic analysis of complex geometries and motion cases.
Key Features Altair FlightStream
Panel Methods, Modernized
FlightStream extends classic panel methods with modern computational techniques, combining speed with stronger handling of complex geometry configurations and broader aerodynamic use cases.
Surface-Based Workflow for Faster Results
FlightStream uses an unstructured surface-mesh solver and does not require a volumetric mesh, helping reduce setup complexity and computational cost while still delivering advanced aerodynamic insight.
Integrated Aerodynamic Analysis Environment
FlightStream brings setup, solving, visualization, scripting, and toolbox-driven studies into one environment, making it easier to run batch studies and evaluate aircraft performance efficiently.
Capabilities
CAD and Mesh Import Compatibility
FlightStream works with CAD and CAE environments such as NX and SolidWorks, supports formats including STL and IGS, and allows direct mesh import from tools such as Cadence Pointwise and ANSA.
Surface Preparation and Watertight Meshing
Built-in meshing tools support defeaturing and watertight model preparation, helping users move from geometry to aerodynamic setup without a volumetric mesh workflow.
Automation, Scripting, and Batch Studies
FlightStream includes scripting capabilities, API scripting, and wrapper-based automation so users can execute simulations in batch and explore design spaces more efficiently.
Solver Sweeper and Stability & Control Toolboxes
Included toolboxes such as Solver Sweeper and Stability & Control support batch process workflows and rapid aircraft performance estimation.
Time-Accurate Aerodynamics
FlightStream can model stacked motion types and time-accurate scenarios, including VTOL transitions, helicopter rotor cyclic and collective motion, advanced flap-track motion, and vehicle maneuvers with control effector actions.
Control Surface Modeling
The software supports control-surface modeling across multiple levels of fidelity, from faired to gapped to multi-flap systems, and can simulate motion for trim, stability and control, and related studies.
Internal Flows and Ducts
FlightStream can model internal flows and ducts to evaluate total pressure losses and viscous effects, including detailed internal-flow studies such as solid rocket motor internal flows.
Viscous Coupling and Boundary Layer Effects
Its viscous-coupled nonlinear flow solution is built to capture boundary-layer behavior and its aerodynamic impact more realistically than legacy panel codes, including thickening and decambering effects.
Aeroacoustics
FlightStream includes an integrated aeroacoustics toolbox capable of modeling tonal and broadband noise components for propellers, rotors, and flexible structures.
Expert FlightStream Support By True Insight
Get practical guidance for setup, training, and aerodynamic simulation workflows from an experienced Altair partner.
Licensing, demos, and product guidance
TrueInsight helps organizations evaluate where FlightStream fits within the Altair stack, then supports implementation with onboarding, workflow guidance, training, and practical simulation support. As an Altair channel partner with broader CFD and engineering-services coverage, TrueInsight can help connect FlightStream to the surrounding geometry, meshing, and simulation workflow without losing focus on the aerodynamic problem being solved.
Articles & Resources
Altair
Explore the broader Altair ecosystem around FlightStream and see how it fits into connected simulation workflows.
Learn About Altair →
Altair HyperMesh CFD
Connects FlightStream to upstream CFD model preparation and meshing workflows when projects require a broader simulation process.
Learn About Hypermesh CFD →
Get to Know Altair FlightStream
An educational introduction to FlightStream, its aerodynamic focus, and where it delivers value.
Read Article →
CFD & Thermal Simulation
Analyze airflow, heat transfer, and fluid behavior using Altair CFD, FlightStream, and HyperMesh CFD, enabling engineers to evaluate designs before building physical prototypes.
Explore Capability →
Drone Design & Simulation Software
Design lighter, more reliable drone systems with connected engineering workflows for structures, aerodynamics, thermal behavior, electromagnetics, power electronics, controls, and digital product development.
Explore Capability →Frequently Asked Questions
FlightStream is used for rapid aerodynamic simulation, especially when you need efficient analysis of aircraft or other vehicle aerodynamics without a traditional volumetric CFD setup.
Its workflow is surface-based. FlightStream uses an unstructured surface-mesh solver, and Altair explicitly notes that no volumetric mesh is required.
Official Altair material describes FlightStream as capable of modeling incompressible through hypersonic flows, with compressibility models and viscous coupling built into the solver approach.
Yes. FlightStream includes unsteady and time-accurate capabilities for scenarios such as VTOL transitions, rotor motion, flap-track motion, and vehicle maneuvers with control effectors.
Yes. It can model control surfaces at multiple fidelity levels, from faired to gapped to multi-flap systems, and supports trimming, stability, and control analysis workflows.
Yes. FlightStream supports CAD and CAE compatibility with tools such as NX and SolidWorks, common formats like STL and IGS, and direct mesh import from Pointwise and ANSA.
Ready To Take The Next Step With FlightStream?
Talk with TrueInsight about FlightStream licensing, onboarding, and the right aerodynamic workflow for your team.