Research Progress on the Modification of B and Al High-Energy Fuels for Powder Fuel Ramjet Applications

Area of Science:

• Materials Science
• Aerospace Engineering
• Combustion Science

Background:

• Metal powder fuels are crucial for aerospace, pyrotechnics, and energy applications.
• Ramjets offer advantages like simple design, light weight, and high thrust-to-weight ratio, ideal for aircraft and missiles.
• A research gap exists in modifying metal powder fuels specifically for ramjet applications.

Purpose of the Study:

• To investigate and summarize metal fuel modification methods for powder fuel ramjets.
• To analyze the impact of metal fuel properties on performance and applicability.
• To provide a comprehensive reference for powder fuel ramjet research.

Main Methods:

• Summarizing the effects of metal features (crystallinity, morphology, particle size) on fuel properties.
• Discussing modified metal fuel materials and techniques suitable for ramjets.
• Systematically evaluating modified fuels' oxidation, ignition, and combustion characteristics.

Main Results:

• Metal fuel properties significantly influence ignition, combustion, flowability, and density.
• Various modification techniques enhance metal fuels for ramjet suitability.
• Properties of modified fuels regarding oxidation, ignition, and combustion are detailed.

Conclusions:

• Modification of metal fuels is essential for optimizing ramjet performance.
• Addressing current challenges will facilitate the widespread application of powder fuel ramjets.
• This paper offers guidance for future research and development in this field.