Unmanned Cargo Aircraft Layout for Single-Engine Container Transport
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Solution Overview
Problem
Existing cargo aircraft are inefficient for transporting cargo due to their passenger-centric design, requiring complex adaptations, pressurization for crew safety, multiple engines for redundancy, and inefficient drag characteristics, leading to increased fuel consumption and manufacturing complexity.
Innovation Solution
An unmanned aircraft with a streamlined fuselage for unpressurized cargo transport, a single or dual jet engine positioned aft for reduced drag, and roll-on/roll-off capability for intermodal cargo containers, equipped with tracks for efficient loading and unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple engines are used to provide sufficient thrust and redundancy, then reliability is improved, but device complexity and drag increase
Solution Approach 1:
The patent extracts the redundancy function from multiple engines and implements it through a different mechanism - using a single engine with advanced reliability features and design. This reduces the number of engines from multiple to one, thereby reducing device complexity and drag while maintaining reliability through alternative means.
Solution Approach 2:
The patent changes the parameters of the single engine to achieve the thrust and reliability that would otherwise require multiple engines. By optimizing engine parameters and performance characteristics, the single engine can provide sufficient thrust and redundancy without the complexity of multiple engines.
2Reliability
If pressurization is implemented for crew safety, then reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts the pressurization system from the aircraft design, eliminating it entirely. Since the aircraft is unmanned and designed for cargo transport, the safety function previously provided by pressurization for crew is replaced by alternative safety mechanisms, thereby reducing device complexity and manufacturing cost.
3Ease of manufacture
If aircraft are designed for passenger travel with seating space, then ease of manufacture is improved, but adaptability for cargo transport deteriorates
Solution Approach 1:
The patent inverts the conventional approach by designing the aircraft from the ground up for cargo transport rather than adapting passenger aircraft for cargo use. This reversal allows the fuselage to be optimized for intermodal cargo containers, improving adaptability while maintaining ease of manufacture through purpose-built design.
Solution Approach 2:
The patent creates an aircraft design that is universally compatible with standard intermodal cargo containers used in shipping, rail, and road transport. This multi-functionality allows the aircraft to work with existing global cargo infrastructure, improving adaptability without sacrificing manufacturing efficiency.
4Power
If multiple engines are used, then thrust is improved, but drag and fuel consumption increase
Solution Approach 1:
The patent extracts the additional engines that cause increased drag and fuel consumption, reducing from multiple engines to a single engine. The single engine is optimized to provide sufficient thrust for cargo transport while minimizing drag and energy loss, thereby improving fuel efficiency.
Data Source
AI summary
The disclosure concerns an unmanned aircraft for carrying of cargo, comprising a fuselage (10) extending in a fore-aft direction and configured to receive cargo in an unpressurized interior space thereof; a wing (20) extending in a spanwise direction perpendicular to the fore-aft direction; and a single engine (30) located at or adjacent the rear of the fuselage, wherein the engine (30) is a jet engine. The aircraft is configured for roll-on/roll-off loading of intermodal cargo containers.