Tự chế pháo nổ, nam thanh niên 27 tuổi ở Hà Giang tử vong

The Dark Knight Returns said:

ơ k phải nổ điện thoại, laptop nữa à

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tonyduongspk said:

Nguyên liệu dễ mua lắm hay sao mà chế lắm thế. Tính cạnh tranh làm ăn tết với bộ quốc phòng ah

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1. Improper Mixing: The KNO3 and sugar need to be thoroughly mixed to ensure a uniform reaction. Incomplete mixing can lead to inconsistent thrust.
2. Moisture Content: Any moisture in the ingredients can hinder combustion. Ensure that your KNO3 and sugar are dry.
3. Cooking Temperature: If the mixture is not cooked at the right temperature, it may not achieve the desired consistency for burning. Overheating can also decompose the sugar.
4. Fuel Ratio: The ratio of KNO3 to sugar is critical. Too much sugar can lead to incomplete combustion, while too little can lead to insufficient fuel.
5. Nozzle Design: The design of the nozzle can greatly affect thrust. An inefficient nozzle can reduce the effective thrust produced.

1. Ingredients:
   • KNO3: 65 grams
   • Sugar: 35 grams
2. Preparation:
   • Grind the KNO3: Use a mortar and pestle to grind the KNO3 into a fine powder. This increases the surface area for a better reaction.
   • Grind the Sugar: If necessary, grind the sugar to a fine powder as well.
3. Mixing:
   • Combine the powdered KNO3 and sugar in a clean, dry container.
   • Mix thoroughly to ensure an even distribution of ingredients. A ball mill can help achieve a fine, homogeneous mixture if available.
4. Cooking:
   • Heat: In a well-ventilated area, gently heat the mixture in a saucepan over low heat. Stir continuously to prevent burning. Aim for a temperature of around 180°C (356°F) to melt the sugar without burning it.
   • Consistency: The mixture should become a thick, syrupy consistency. If it becomes too runny, it may be too hot and could decompose.
5. Molding:
   • Pour the hot mixture into your rocket casing or mold. Be careful, as the mixture will be very hot.
   • Allow it to cool and harden completely.
6. Nozzle:
   - Ensure your nozzle is properly designed for the thrust you want. A converging nozzle is typically used to increase the exit velocity of the gases.
7. Testing:
   - Conduct a test in a safe, open area, following all safety precautions. Monitor the burn rate and thrust produced.

• Always wear safety gear, including goggles and gloves.
• Work in a well-ventilated area, away from flammable materials.
• Be cautious when handling heated materials and during the rocket's ignition.

Phanh Blank 2 said:

không có gì bất ngờ lắm , hàng năm ít cũng trên 15 vụ

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fishazt said:

Không biết giờ bọn nó còn bán "combo phân bón" 3 màu vàng-trắng-đen trên sàn không nhỉ, trước thấy đăng đầy trên LZD

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17.8 + 6 cm said:

loại chế tại nhà thường dùng phân bón KNO3 với đường là đủ
Why is our KNO3 sugar rocket not giving enough thrust, even when cooked? Can anyone suggest a ratio and procedure to follow? (https://www.quora.com/Why-is-our-KNO3-sugar-rocket-not-giving-enough-thrust-even-when-cooked-Can-anyone-suggest-a-ratio-and-procedure-to-follow)
Nguồn Quora

When dealing with sugar rockets using potassium nitrate (KNO3) and sugar (often sucrose), there are several factors that could affect thrust. Here are some common issues and suggestions for the ratio and procedure:

Common Issues

1. Improper Mixing: The KNO3 and sugar need to be thoroughly mixed to ensure a uniform reaction. Incomplete mixing can lead to inconsistent thrust.
2. Moisture Content: Any moisture in the ingredients can hinder combustion. Ensure that your KNO3 and sugar are dry.
3. Cooking Temperature: If the mixture is not cooked at the right temperature, it may not achieve the desired consistency for burning. Overheating can also decompose the sugar.
4. Fuel Ratio: The ratio of KNO3 to sugar is critical. Too much sugar can lead to incomplete combustion, while too little can lead to insufficient fuel.
5. Nozzle Design: The design of the nozzle can greatly affect thrust. An inefficient nozzle can reduce the effective thrust produced.

Recommended Ratio

A commonly used ratio for KNO3 and sugar in sugar rockets is 65% KNO3 to 35% sugar by weight. Some variations exist, but this is a good starting point.

Procedure

1. Ingredients:
   • KNO3: 65 grams
   • Sugar: 35 grams
2. Preparation:
   • Grind the KNO3: Use a mortar and pestle to grind the KNO3 into a fine powder. This increases the surface area for a better reaction.
   • Grind the Sugar: If necessary, grind the sugar to a fine powder as well.
3. Mixing:
   • Combine the powdered KNO3 and sugar in a clean, dry container.
   • Mix thoroughly to ensure an even distribution of ingredients. A ball mill can help achieve a fine, homogeneous mixture if available.
4. Cooking:
   • Heat: In a well-ventilated area, gently heat the mixture in a saucepan over low heat. Stir continuously to prevent burning. Aim for a temperature of around 180°C (356°F) to melt the sugar without burning it.
   • Consistency: The mixture should become a thick, syrupy consistency. If it becomes too runny, it may be too hot and could decompose.
5. Molding:
   • Pour the hot mixture into your rocket casing or mold. Be careful, as the mixture will be very hot.
   • Allow it to cool and harden completely.
6. Nozzle:
   - Ensure your nozzle is properly designed for the thrust you want. A converging nozzle is typically used to increase the exit velocity of the gases.
7. Testing:
   - Conduct a test in a safe, open area, following all safety precautions. Monitor the burn rate and thrust produced.

Safety Precautions

• Always wear safety gear, including goggles and gloves.
• Work in a well-ventilated area, away from flammable materials.
• Be cautious when handling heated materials and during the rocket's ignition.

By following these guidelines, you should be able to improve the thrust of your sugar rocket. If problems persist, consider experimenting with different ratios or refining your nozzle design.

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God of Sun said:

27 tuổi thì không học online để nổ pin laptop or pin điện thoại được rồi. mà này chắc nó chế để bán chứ chế chơi chơi sao nổ chết được.

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HuyetThuNhanDo said:

Ngu thực sự. Mình có th em họ cũng đam mê bộ môn cuốn pháo, bán lấy tiền, bị nổ 2 lần rồi. 1 lần tết năm trước về, bỏng mất 1 tết nằm nhà, đi lại cứ dạng háng như vượn đi. lần thứ 2, có đứa con ngồi chơi cạnh đó, mà thằng bố vẫn cuốn pháo, hại con bé bị tiếng nổ làm ù hết tai, tưởng đâu điếc cmnr. Bị bao nhiêu lần vẫn đ chừa. Hôm lễ về đó vẫn thấy cuốn pháo, hết cmn thuốc chữa

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Giao Chu Ma Giao said:

Có cái méo gì đâu mà đam mê vk

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HuyetThuNhanDo said:

Thấy bảo có lãi lắm, lời gấp 3. Cuốn 1 quả vốn 500k bán 1.8-2tr

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Giao Chu Ma Giao said:

Ơ vãi, thế cuốn xong lại đưa cho shipper đi giao á
Chẳng may cháy nổ trên đường vận chuyển chắc cũng méo truy được là kiện hàng của ai

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HuyetThuNhanDo said:

Ngu thực sự. Mình có th em họ cũng đam mê bộ môn cuốn pháo, bán lấy tiền, bị nổ 2 lần rồi. 1 lần tết năm trước về, bỏng mất 1 tết nằm nhà, đi lại cứ dạng háng như vượn đi. lần thứ 2, có đứa con ngồi chơi cạnh đó, mà thằng bố vẫn cuốn pháo, hại con bé bị tiếng nổ làm ù hết tai, tưởng đâu điếc cmnr. Bị bao nhiêu lần vẫn đ chừa. Hôm lễ về đó vẫn thấy cuốn pháo, hết cmn thuốc chữa

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