KS IA - Weike Rocket Model Project Fuel Improvement Solution¶

Project Overview¶

graph LR
    A[KNSB Fuel Improvement Project] --> B[Oxidizer Improvement]
    A --> C[Fuel Improvement]
    A --> D[Additives & Process]

    B --> B1[Particle Size Control A1]
    B --> B2[Oxidizer Doping A2]

    C --> C1[Blending/Replacement B1]
    C --> C2[Metal Additive B2]

    D --> D1[Plasticizer C1]
    D --> D2[Curing Agent C2]
    D --> D3[Process Improvement C3]

Component Definitions¶

Detailed Improvement Solutions¶

Oxidizer Improvement Path¶

flowchart TD
    Start[Oxidizer Improvement] --> Method1
    Start --> Method2

    subgraph Method1 [A1 Particle Size Control]
        A1_1[Use Finer KNO3 Powder] --> A1_2[325 mesh or finer]
        A1_1 --> A1_3[Ball Milling]
    end

    subgraph Method2 [A2 Oxidizer Doping]
        A2_1[Add Metal Oxide] --> A2_2[Iron Oxide Catalyst]
        A2_2 --> A2_3[Stabilize Combustion]
        A2_2 --> A2_4[Increase Burn Rate]
    end

Fuel Improvement Comparison¶

graph LR
    A[Fuel Improvement] --> B[Cost Optimization]
    A --> C[Performance Enhancement]

    B --> B1[Sucrose/Glucose Replacement]
    B1 --> B1_1[Advantage: Lower Cost]
    B1 --> B1_2[Disadvantage: May Reduce Burn Rate]

    C --> C1[Erythritol Replacement]
    C1 --> C1_1[Advantage: Higher Specific Impulse]
    C1 --> C1_2[Disadvantage: High Cost]

    C --> C2[Aluminum Powder Addition]
    C2 --> C2_1[Advantage: Significantly Improve Performance]
    C2 --> C2_2[Challenge: Complex Process]

Solution A Specific Formula¶

Component Ratio¶

pie title Improved Formula Composition
    "Potassium Nitrate" : 65
    "Sorbitol" : 30
    "Aluminum Powder" : 2
    "Iron Oxide" : 1
    "Stearic Acid" : 0.5

Reaction Process Analysis¶

sequenceDiagram
    participant KNO3 as Potassium Nitrate
    participant Fe2O3 as Iron Oxide Catalyst
    participant Al as Aluminum Powder
    participant Sorbitol as Sorbitol

    Fe2O3->>KNO3: Catalytic Decomposition
    KNO3->>KNO3: Release O₂ + N₂
    KNO3->>Al: Priority Oxygen Supply
    Al->>Al: Oxidize to Al₂O₃
    KNO3->>Sorbitol: Remaining Oxygen
    Sorbitol->>Sorbitol: Incomplete Oxidation

Chemical Reaction Calculations¶

Molar Analysis¶

graph TB
    Base[100g Grain Basis] --> Comp1
    Base --> Comp2
    Base --> Comp3
    Base --> Comp4

    Comp1[KNO3 65g] --> Calc1[0.643 mol]
    Comp2[Sorbitol 30g] --> Calc2[0.165 mol]
    Comp3[Al 2g] --> Calc3[0.074 mol]
    Comp4[Stearic Acid 0.5g] --> Calc4[0.00176 mol]

Oxygen Balance Analysis¶

graph LR
    O2_Need[Total O₂ Demand] --> Need_Calc[1.458 mol O₂]
    O2_Supply[Total O₂ Supply] --> Supply_Calc[0.804 mol O₂]

    Need_Calc --> Compare{Comparison}
    Supply_Calc --> Compare

    Compare --> Result[Oxygen-Deficient Formula]

Process Flow Chart¶

flowchart TD
    Start[Start Preparation] --> Step1
    Step1[Dry Component Mixing] --> Step2
    Step2[Heat Melt Sorbitol] --> Step3
    Step3[Add Mixed Powder] --> Step4
    Step4[Stir Uniformly] --> Step5
    Step5[Precise Temperature Control Curing] --> End[Finished Product]

    Note1[Prevent Charring] -.-> Step5

Summary¶

mindmap
  root((KNSB Improvement Solution))
    Performance Enhancement
      Higher Specific Impulse
      Faster Burn Rate
      Better Stability
    Process Optimization
      Easier Processing
      More Precise Quality Control
      Higher Safety
    Application Effects
      Attract High-Quality Members
      Enhance Team Image
      Promote Research & Development