Simulation library

Bernoulli & the Venturi

Squeeze flow through a venturi and watch pressure fall as velocity rises — Bernoulli's principle made visible.

Gas Laws — PV = nRT

Vary pressure, volume and temperature on an ideal gas and see the combined gas law hold in real time.

Simple Harmonic Motion — the Pendulum

Change length and amplitude to explore period, frequency and the limits of the small-angle approximation.

Standing (Stationary) Waves

Superpose two opposite travelling waves to build a standing wave — fixed nodes and swinging antinodes for each harmonic.

Projectile Motion

Fire a projectile at any speed and angle and watch the parabolic path — range, height and the 45° maximum.

Momentum & Collisions

Collide two carts elastically or inelastically and confirm momentum is always conserved while kinetic energy may not be.

Energy Conversion (KE ⇄ PE)

Watch a pendulum trade potential for kinetic energy and back, with an option to add friction and lose energy to heat.

Hooke's Law

Stretch a spring and plot force against extension — F = k·x up to the elastic limit, then permanent deformation.

Pressure & Depth

Lower a probe into a liquid and watch the gauge climb — pressure P = ρ·g·h grows with depth and density.

Heat Transfer

Switch between conduction, convection and radiation to see the three ways heat moves — through solids, fluids and empty space.

Specific & Latent Heat

Heat ice through melting and boiling and watch the heating curve — sloped for temperature rise, flat during a change of state.

Thermal Expansion

Heat a bimetallic strip and watch it curl and close a switch as the two metals expand by different amounts.

Electrical Fundamentals

16 sims

The DC Motor (3D) — Why the Commutator Matters

Drive a 3-D armature between N and S poles, watch F = B·I·L turn it, and switch the commutator off to see the torque reverse every half turn and stall the motor.

Atomic Structure & Conduction

Rotate a 3-D atom, compare copper, silicon and sulfur, then apply an EMF to see why the valence shell alone decides whether a material conducts.

AC Generation — the Rotating Coil

Rotate a single-loop generator through a magnetic field and watch the induced EMF trace a sine wave in real time.

Electromagnetic Induction — Faraday & Lenz

Move a magnet through a coil and see how rate of flux change and Lenz's law set the magnitude and direction of EMF.

RC Charging & Time Constant

Charge and discharge a capacitor through a resistor and explore the time-constant (τ = RC) relationship.

Series vs Parallel Resistance

Build series and parallel networks and watch current, voltage drops and total resistance update live.

Ohm's Law — V = I × R

Set voltage and resistance and watch current and power respond, with electron flow that speeds up as current rises.

Transformer Turns Ratio

Change primary and secondary windings to step voltage up or down — Vs/Vp = Ns/Np, with power conserved.

Reactance vs Frequency

Watch capacitive reactance fall and inductive reactance rise with frequency, and see where they cross at resonance.

Series LC Resonance

Tune L, C and damping R to move and sharpen the resonance peak — resonant frequency, Q factor and bandwidth.

Three-Phase AC

See three windings 120° apart produce three sine waves and rotating phasors whose instantaneous sum is always zero.

The Wheatstone Bridge

Balance four resistors so the galvanometer reads zero, then read the unknown resistance from the ratio.

The DC Motor

Vary current and field and watch a coil spin from the motor effect (F = B·I·L); reverse the current to reverse the spin.

The Voltage Divider

Move a potentiometer wiper to tap off any fraction of the supply — Vout = Vin · R2 / (R1 + R2).

Kirchhoff's Laws

Watch current split at a node (KCL) and voltage drops sum around a loop (KVL) in a series-parallel network.

AC Power & Power Factor

Change the phase angle and see real, reactive and apparent power split on the power triangle — cos φ is the power factor.

Electronic Fundamentals

10 sims

Diode Rectifier — Half & Full Wave

See a diode turn AC into DC — switch between half-wave and a full-wave bridge and compare the output waveforms.

Transistor as a Switch & Amplifier

Drive the base and watch a small current control a much larger collector current — switching and amplification (Ic = β·Ib).

Operational Amplifier (Inverting)

Set the resistors to fix the gain (−Rf/Rin) and watch the output amplify, invert and clip at the supply rails.

Closed-Loop Servomechanism

Command a position and watch a feedback loop drive the output to match it — see lag, overshoot and settling as you change gain.

Zener Voltage Regulator

Sweep the input and watch a Zener diode clamp the output at its breakdown voltage — a simple voltage reference.

Smoothing a Rectified Supply

Add capacitance or lighten the load and watch the ripple on a rectified DC supply shrink toward smooth DC.

RC Filter — Low & High Pass

Set R and C to place the cut-off frequency, and switch between low-pass and high-pass to see the response curve.

LED & Photodiode

Drive an LED and watch it light a photodiode across the gap — current to light and back, as in an optocoupler.

Astable Oscillator

Set R and C to change the frequency of a self-running square-wave oscillator — f ≈ 1.44 / (R·C).

Diode Clipper

Chop the top, bottom or both peaks off a waveform with a diode and reference — see clipping shape the signal.

Digital Techniques / Electronic Instrument Systems

6 sims

ADC Resolution & Quantisation

Change the bit count and sampling rate to see resolution, quantisation error and aliasing for yourself.

The ARINC 429 Word

Build a 32-bit ARINC 429 word field by field — label in octal, SDI, data, SSM and the odd-parity bit.

Module 5Pro

The Fetch–Decode–Execute Cycle

Step a processor through its instruction cycle and watch the address, data and control buses in action.

Module 5Pro

Half Adder & Full Adder

Toggle inputs and carry bits to see how gate-level half and full adders perform binary addition.

Logic Gate Playground

Wire up AND, OR, NOT, NAND, NOR and XOR gates and observe live truth-table behaviour.

Number-System Converter

Convert interactively between binary, octal, decimal, hexadecimal and BCD.

Materials & Hardware

1 sim

Module 6Free

Stress, Strain & the Tensile Test

Pull a test specimen and trace the stress–strain curve through the elastic limit, yield and fracture.

Maintenance Practices

2 sims

Module 7Free

Fits, Clearances & Tolerances

Set shaft and hole tolerances to produce clearance, transition and interference fits.

Module 7Free

Torque, Friction & Bolt Preload

See how applied torque and the friction coefficient determine the clamping preload in a bolted joint.

Basic Aerodynamics

4 sims

Module 8Free

The ISA Standard Atmosphere

Climb through the ISA model and watch pressure, temperature and density change with altitude.

Module 8Free

Lift, Angle of Attack & the Stall

Sweep angle of attack on an aerofoil to grow the lift coefficient up to the stall.

Module 8Free

Drag & the Minimum-Drag Speed

Combine induced and parasite drag to find the speed for minimum total drag (best L/D).

Module 8Pro

The Four Forces in Flight

Balance lift, weight, thrust and drag to see how an aircraft climbs, cruises and descends.

Gas Turbine Engine

1 sim

Module 15Free

Gas Turbine — the Running Turbojet

Watch air move through intake, compressor, combustion, turbine and nozzle on a running turbojet.

Piston Engine

1 sim

Module 16Free

Four-Stroke Engine — the Otto Cycle

Step through intake, compression, power and exhaust strokes and read the Otto-cycle PV diagram.