OpenVSP · JETcentral

Blue wireframe of the converted OpenVSP geometry used for analysis. Drag to rotate; wheel to zoom. Native VSPAERO generates its solver panels when the analysis runs.

Load aircraft JSON or open this page from JETcentral → CFD → OpenVSP.

1. Aircraft and OpenVSP geometry

Choose JET workbook or JSON

No aircraft loaded.

Save .vsp3 converts and saves the aircraft without running VSPAERO. Geometry can also be saved to Team Files / OpenVSP. Uses the existing JET2VSP converter: fuselage sampled at 20 sections, tapered lifting surfaces with four-digit NACA airfoils, enabled tails/strakes and nacelle pods. Detailed inlet ducts, arbitrary parts and control deflections are not reproduced by this converter. VSPAERO runs use the converted geometry.

2. Conditions

Speeds

Liftoff speedUnitsLiftoff altitude (ft)

Cruise speedUnitsCruise altitude (ft)

Defaults to Mach 0.80 when JSON cruise speed is unavailable.

Each speed uses standard-atmosphere density and sound speed at its altitude. Both analysis modes use these two speeds. Single condition uses the alpha and beta in Aerodynamic model and single-condition controls, at each speed. Reference dimensions and the moment reference apply to both.

Sweep

Alpha start (deg)Beta start (deg)Alpha end (deg)Beta end (deg)Alpha step (deg)Beta step (deg)

Parameter Sweep evaluates every alpha/beta combination at both speeds. Start and end must contain a whole number of steps; up to 2000 cases.

Liftoff density (slug/ft³)Reference area S (ft²)Reference span b (ft)Reference chord c (ft)Moment ref X aft (ft)Moment ref Y right (ft)Moment ref Z up (ft)

Area, span and MAC default from the incoming main-wing JSON. Moment reference X/Y/Z locates the point about which moments are calculated, in aircraft coordinates. Moment reference defaults to the incoming aircraft takeoff CG. Older files with only CG_TO use zero for Y/Z. Saved cases retain their original reference. Each speed uses atmospheric density and sound speed at its specified altitude. This page accepts Mach 0.01–3.0; aerodynamic runs exclude 0.95 < Mach < 1.05. Assess compressibility and attached-flow assumptions.

Load an aircraft to populate the CG moment reference.

3. Compute

AnalysisWake iterations

Load saved result JSON

Local helper and cloud setup

For local execution, start the helper on this computer using the command below and keep it running. Allow this website’s local-network permission if prompted. Install the official OpenVSP package. The helper invokes OpenVSP and VSPAERO natively using the bundled script API.

Cloud execution requires the OpenVSP service and website gateway configuration; it reports unavailable until installed.

Official OpenVSP downloads · Setup and model details

OpenVSP / VSPAERO

Analysis curves

Download Helper

OpenVSP error

OpenVSP mesh

Analysis curves