Longifolene-Based High Density Fuels for Navy Platforms
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Solution Overview
Problem
Current fuel technologies for Navy platforms rely on non-sustainable petroleum sources, leading to high carbon footprints and limited range and loiter time for aircraft and weapon systems, necessitating the development of high-density fuels from sustainable sources.
Innovation Solution
Conversion of sesquiterpenes, particularly longifolene, into high-density fuels through fermentation, purification, dimerization, and hydrogenation, which can be blended with other fuels to enhance performance and sustainability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If conventional petroleum-based jet fuel is used, then current fuel infrastructure is maintained, but carbon footprint is high and range/loiter time is limited
Solution Approach 1:
The invention changes the chemical composition parameters of the fuel by converting sesquiterpenes (specifically longifolene) into high-density fuel components through catalytic processes. This transforms the molecular structure to achieve higher volumetric energy density while using renewable biomass sources, thereby reducing carbon footprint and extending range/loiter time simultaneously
Solution Approach 2:
The invention creates a composite fuel system by blending synthesized longifolene-derived hydrocarbons with conventional jet fuel components. This composite approach allows the sustainable fuel component to contribute high energy density and low carbon footprint properties while maintaining compatibility with existing fuel infrastructure and engine systems
2Quantity of substance
If high density fuels are developed from sustainable sources, then carbon footprint is reduced and range is increased, but fuel density and energy content must be significantly enhanced
Solution Approach 1:
The invention segments the fuel production process into distinct modular stages: (1) biomass feedstock preparation, (2) sesquiterpene synthesis through fermentation, (3) purification of longifolene, (4) catalytic conversion to high-density hydrocarbons, and (5) blending with conventional fuel. This segmentation enables each stage to be optimized independently and facilitates scalability while managing production complexity
Solution Approach 2:
The invention uses sesquiterpenes (particularly longifolene) as intermediary compounds in the fuel synthesis pathway. These intermediaries are produced through controlled fermentation from renewable biomass, then serve as precursors for catalytic conversion to high-density hydrocarbon fuel components, bridging the gap between sustainable biomass and high-energy-density fuel
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The resulting fuels offer up to 17% higher volumetric net heat of combustion than conventional jet fuel, reducing carbon emissions and increasing the range and loiter time of Navy platforms while being derived from renewable biomass sources.
Implementation Method 1
longifolene can be generated from sustainable biomass sugars via fermentation
Implementation Method 2
The product mixture is hydrogenated to generate longifolene
Data Source
AI summary
A process for making high density fuels having the potential to increase the range and/or loiter time of Navy platforms. Derivation of these fuels from a sustainable source will decrease the carbon footprint of the Department of Defense (DoD) and reduce reliance on nonsustainable petroleum sources. Fuels based on longifolene have volumetric net heats of combustion up to 17% higher than conventional Navy jet fuel (JP-5). Moreover, longifolene can be generated from sustainable biomass sugars via fermentation.