Gas Turbine

A gas turbine you can run, push, and stall - safely.

A gas turbine converts high-temperature, high-pressure gas into useful mechanical power or thrust - compressing incoming air, adding heat through combustion, and expanding the hot gases through a turbine. They power aircraft, power stations, ships, oil and gas systems, and industrial drives.

Students interact with a complete machine rather than a static diagram. In Assembly / Disassembly Mode they separate and inspect each component; X-Ray View exposes compressor stages, the combustor, turbine blades, shaft, and casing; Working Mode animates the full cycle - intake, compression, fuel injection, combustion, turbine expansion, exhaust, and shaft power.

A CFD layer reveals flow behaviour, pressure zones, temperature rise, and the combustion region, all mapped to the Brayton cycle. In the Simulation / Test Bench Mode - a virtual test cell - learners vary parameters and study performance trends, operating limits, efficiency, output power, and abnormal conditions.

Why a virtual gas turbine?

• Surge and stall are the concepts students most need to understand and the ones nobody will demonstrate on real hardware.
• Compressor stages, combustor and blade rows are buried inside the casing and never seen in operation.
• The starting and ignition sequence up to self-sustaining speed is a process, not a diagram.
• A test bench lets students push the machine to its limits with no consequence beyond a restart.

Components you can inspect

• Multi-stage axial compressor
• Combustion chamber
• Turbine and blade rows
• Shaft, casing, and bearings
• Nozzle and exhaust
• Auxiliaries and the starting system

Concepts it makes tangible

• The Brayton cycle - intake, compression, combustion, expansion, exhaust
• Energy transfer through compression and turbine expansion
• Compressor surge and stall - causes, symptoms, and impact
• Starting, ignition, and acceleration to self-sustaining speed
• Blade cooling, materials, and blade design
• Airflow, pressure, and temperature from CFD-style views

Modes of interaction

• Assembly / Disassembly to separate and inspect each part
• X-Ray View exposes stages, combustor, and blades
• Working Mode animates the full cycle
• Simulation / Test Bench varies parameters and studies limits

How faculty use it

• Pre-lecture primer on turbomachinery and the Brayton cycle
• Flipped classroom - run the machine before class
• Safe study of surge, stall, and abnormal operation
• Assessment of components, cycle, and performance

Crucially, the module makes the hard-to-visualise concepts tangible: compressor surge and stall, starting and ignition sequences, and why blade cooling, materials, and aerodynamic profile are critical at extreme temperatures. The 7thi AI tutor scaffolds the difficult parts in context, and built-in assessment shows faculty who has grasped which concepts - without grading another paper.

How the module works

Students disassemble a gas turbine into its multi-stage axial compressor, combustion chamber, turbine and blade rows, shaft, casing, bearings, nozzle and auxiliaries, then run it. The working mode animates the Brayton cycle and visualises the airflow the casing normally hides. Crucially, a test-bench mode lets students study surge and stall - seeing the causes, the symptoms and the effect on the machine - and follow the starting, ignition and acceleration sequence up to self-sustaining speed. They can push the machine to its limits with no consequence beyond a restart, which is impossible on real hardware.

What students take away

A student can identify the components of a gas turbine and explain how the Brayton cycle drives it, describe compressor surge and stall and what causes them, and walk through the starting sequence as a process rather than a specification. They understand why turbine inlet temperatures force the blade cooling and material choices that make the machine possible - the engineering compromises at the heart of turbomachinery.

In the classroom

Turbomachinery and power courses use the module to teach the behaviour students most need and can least safely see on real hardware. Surge and stall, the starting sequence and the internal airflow are all explored on a virtual test bench where the machine can be pushed to its limits without consequence. It serves as a flipped-classroom primer on the Brayton cycle and as a lab-free resource for programmes without turbomachinery rigs.

Interactive features and modes

Students can disassemble the machine, use X-ray views of the compressor stages and blades, run an animated Brayton cycle, and use a test-bench mode to study surge, stall, starting and blade cooling. The test bench is the heart of the module: it lets students push the machine into regimes that no real rig would be taken to deliberately, see what happens, and recover with a restart.

Why it matters

Gas turbines power aircraft, ships, pipelines and a growing share of the electricity grid, and they behave in ways students most need to understand and nobody will demonstrate on real hardware. Surge and stall can wreck a machine, so no lab induces them deliberately; the compressor stages, combustor and blade rows are buried inside the casing; and the start-up sequence is a process, not a diagram. A virtual test bench lets students see the dangerous behaviour safely, repeatedly, and in full.

The bigger picture

Gas turbines operate at the edge of what materials can withstand: turbine inlet temperatures exceed the melting point of the blade alloys, so blade cooling, material selection and aerodynamic design are not refinements but the very things that make the machine possible. And the failure modes that matter most, surge and stall, are precisely the ones no lab will demonstrate on real equipment. A virtual test bench lets students see the machine pushed into those regimes and recover, building an understanding of operating limits that is otherwise reserved for people who have damaged real hardware.

Devices, deployment and assessment

Deploying the module is straightforward. It runs on Meta Quest, ClassVR and Pico headsets, on WebXR-compatible browsers, and on the desktop without any headset at all, so a department can start with the hardware it already has and scale as it grows. Faculty can assign the whole module or specific scenes, set it as pre-lab preparation or post-lab revision, and track progress on a dashboard that records concepts mastered, time per scene and assessment scores, with export to the LMS via xAPI. The 7thi AI tutor answers student questions in context throughout, so learners are never left stuck and faculty are not fielding the same question forty times.

Who this module is for

• Mechanical, aerospace and energy undergraduates from Year 2 studying turbomachinery
• Power plant and combined-cycle engineering courses
• Diploma and polytechnic mechanical programmes
• Faculty teaching the Brayton cycle who want a machine to point at