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Description
Aircraft Hot Air Engine Power Generator Engine Innovative Stirling Engine Science ToysPropeller Aircraft Head Shape Stirling Pocket Engine Model Toy for Developing Intelligence Features: Material: Selected quality materials, made of brass and glass. Bright color, it is not easy to rust and fade. Transparent glass base, high speed and long running time and no wear. Operating Methods: Put the engine model on the horizontal position, next take out the alcohol lamp, add about 2 3 alcohol into the alcohol lamp, under the premise of ensuring
Propeller Aircraft Head Shape Stirling Pocket Engine Model Toy for Developing Intelligence
Features:
- Material: Selected quality materials, made of brass and glass. Bright color, it is not easy to rust and fade. Transparent glass base, high speed and long running time and no wear.
- Operating Methods: Put the engine model on the horizontal position, next take out the alcohol lamp, add about 2/3 alcohol into the alcohol lamp, under the premise of ensuring safety, ignite the alcohol lamp, you can gently power the flywheel rotation, the engine would keep running.
- Operation Theory: A stirling engine is a heat engine that operated by cyclic compression and expansion of air or other gas (the working fluid) at different temperatures, such that there will be a net conversion of heat energy to mechanical work.
- Wide Application: This model kit has a wide range of application as, great gift for Kids' science project, Physical/mechanical learning, teacherÀs Demo props on the class, birthday gift for friends, families, parents, kids, etc.
- NOTE: Use 95% alcohol(not including) during operation, no water, kerosene, gasoline, lighter oil, liquor and spirits. The product is suitable for people over 14 years old.
Specifications:
.Color: As Shown
.Material: Stainless Steel + Glass
.Product Weight: 300g
.Package Dimensions: 8*8*12cm
.Package Weight: 400g
.Packing: Box
Package Content:
.1 x Stirling Engine Model Toy
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 2165 reviews
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Product Reviews
★★★★★ 1
not cooling for post menopause
Set name: UltraCool Pillow, Standard - Medium/Firm Firmness, Item length width: 30.0 Inches
As a post menopausal person I did not find this cooling at all. The material is memory foam which holds heat but more importantly my head sinks in so that half of it is always surrounded by the pillow, trapping heat. It IS a supportive, soft and comfy pillow. For cooling though, I found it better to buy a firmer, thinner pillow which keeps my head from sinking into it, allowing heat to dissipate.
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Reviewed in the United States on August 25, 2025
★★★★★ 4
Nice and squishy
Set name: UltraCool Pillow, Standard - Soft/Medium Firmness, Item length width: 30.0 Inches
Not really a "cooling" pillow, but better than a standard or or fiber filled pillow. All these types of pillows and other bed linens are initially cool to the touch, but they quickly heat up to match your body temperature. Although the technology currently does not exist to maintain constant cooling, pillows like this are a good compromise for now. It's nice and soft and is a good value for the price.
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Reviewed in the United States on July 30, 2025
★★★★★ 5
New Fave
Set name: UltraCool Pillow, Standard - Medium/Firm Firmness, Item length width: 30.0 Inches
Love It so far... Its cool and comfortable... just the right firmness
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Reviewed in the United States on December 17, 2025
★★★★★ 3
Doesn’t stay cool long
Set name: UltraCool Pillow, Standard - Soft/Medium Firmness, Item length width: 30.0 Inches
The pillow was a little softer than I expected. It’s cool at first but at least for me heats up fast.
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Reviewed in the United States on May 11, 2024
★★★★★ 2
too soft, useless. but cool, kindah
Set name: UltraCool Pillow, Standard - Medium/Firm Firmness, Item length width: 30.0 Inches
the problem with these "cooling" pillows is any cooling effect is almost completely negated by a pillow case. this particular pillow is cool to the touch, but completely useless as it flattens out completely, way too soft I think for anyone. I would not recommend this "NASA" pillow for anyone for anything. Maybe for 10 bucks, but certainly not what they ask for this. I did keep it though. It is "cool" but only for a moment and your flipping it around like any other pillow. also way too soft. BUt, it has been cool enough to get me back to sleep.
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Reviewed in the United States on May 29, 2025