Use this engineering calculation for a transparent preliminary estimate or independent arithmetic check when geometry, materials, loads, operating conditions, and units are defined consistently.

Mass Flow Kilograms Per Second (kg/s)

Required number input.

Inlet Speed Meters Per Second (m/s)

Required number input.

Outlet Speed Meters Per Second (m/s)

Required number input.

Axial thrust from ideal momentum change ṁ(vout−vin) through a propeller control volume; excludes pressure thrust. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Thrust Newtons (N)

The resulting thrust newtons returned as a number.

• Fan, pump, turbine, and propeller performance varies with speed, flow, head, density, efficiency map, cavitation margin, installation, control, and off-design operation. Similarity or ideal-power equations do not replace manufacturer curves.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check assumptions against drawings, measurements, current material data, and the applicable design code. Apply required load combinations and safety factors, then obtain qualified review and testing for consequential designs.

• Rocket Thrust

  Ideal rocket thrust ṁve+(pe−pa)Ae from exhaust momentum and nozzle pressure imbalance.

• Bernoulli Total Head

  Total ideal-flow head as elevation plus pressure head and velocity head; excludes friction and pump terms.

• FDM Printing Time

  Ideal FDM extrusion time from deposited volume and volumetric deposition rate; excludes travel, heating and pauses.