Joytopiaminds Gamma Type Alcohol Lamp Powered Stirling Engine Helicopter Model with Rotating Blades for Physical Science Experiment Display & Decoration

• ✈️ Helicopter-Themed Stirling Engine: Combines a detailed 386mm aluminum helicopter model with a functional gamma-type Stirling engine. Watch the main rotor (330mm diameter) and tail rotor spin realistically when heated - though designed as a display piece, not for actual flight
• 🔩 Premium CNC-Machined Parts: Features hundreds of precisely crafted aluminum alloy, copper, and stainless steel components. Includes explosion-resistant stainless steel heating tube for safe thermal operation and durable electrophoresis-finished base (190x190mm)
• 📚 DIY Educational Assembly Project: Build a working thermodynamic display with illustrated instructions and included tools. Perfect for understanding heat-to-motion conversion - ideal for physics demonstrations, STEM learning, and hobbyist workshops (recommended 15+)
• 🔥 Alcohol-Powered Operation: Simple startup using 95% alcohol lamp (included). Manually spin the flywheel after preheating for continuous operation. CAUTION: Heating parts become extremely hot - no oil lubrication required on pistons/cylinders
• 🎁 Impressive Display & Gift: Striking 122cm tall centerpiece with spinning rotors. Packaged in protective box (21x21x21cm), its an exceptional gift for engineers, educators, or collectors - ideal for birthdays, Christmas, or science enthusiasts

Specifications: .Material: Aluminium Alloy + Copper + Stainless Steel .Product Version: KIT .Body Length: 386.6mm .Body Height: 122.6mm .Heliport Base Dimensions: 190 x 190 x 20mm .Main Rotor Diameter: 330mm .Tail Rotor Diameter: 80mm .Heating Tube Diameter: 15mm .Product Weight: 995g .Package Dimensions: 21 x 21 x 21cm .Package Weight: 1350g .Packing: Box Package Including .1 x Model Kit .1 x Tool .1 x Instruction