Modular Articulated Wing Aircraft for High Altitude Loitering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current high altitude, long endurance aircraft designs face challenges in achieving structural robustness and aerodynamic efficiency, leading to limitations in altitude ceiling and operational flexibility, particularly due to issues with wing bending and stability in high aspect ratio flying wings, and the impracticality of large, lightweight airships.
Innovation Solution
A modular articulated-wing aircraft system where autonomous flyers join at wingtips to form a multiple-articulated flying surface, allowing for increased aerodynamic efficiency and structural robustness, with a solar-electric power system for indefinite flight capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a high aspect ratio wing design is used to improve aerodynamic efficiency, then the aircraft can achieve higher altitude ceiling and longer endurance, but the structural weight increases and structural robustness decreases due to wing bending issues
Solution Approach 1:
The aircraft is divided into multiple modular flyers (typically three) that can operate independently or join together at their wingtips to form a coupled configuration. This segmentation allows each module to have a lower aspect ratio with adequate structural robustness, while the coupled configuration achieves the high aspect ratio needed for aerodynamic efficiency at high altitudes.
Solution Approach 2:
The aircraft system transitions dynamically between uncoupled and coupled configurations based on operational requirements. The modular flyers can separate for takeoff, navigation, or emergency situations, and couple together for high-altitude loitering missions where aerodynamic efficiency is paramount. This dynamic reconfiguration resolves the contradiction between structural robustness and aerodynamic efficiency.
2Weight of moving object
If a high aspect ratio flying wing design is used to reduce structural weight, then the aircraft can operate at higher altitudes, but stability and control become problematic due to wing bending
Solution Approach 1:
The flying wing is segmented into multiple modular units with lower individual aspect ratios that maintain inherent structural stability. When coupled together, these segments form a high aspect ratio configuration for aerodynamic efficiency while each segment's rigid structure prevents excessive wing bending and maintains flight stability.
Solution Approach 2:
Multiple stable modular flyers are merged at their wingtips to create a coupled configuration that achieves high aspect ratio aerodynamic efficiency. The combination of multiple stable units results in a system that maintains stability through distributed control and the inherent rigidity of each modular segment.
3Duration of action of moving object
If a large, lightweight airship design is used to achieve high altitude operation, then the aircraft can operate indefinitely, but the design becomes impractical due to size and structural complexity
Solution Approach 1:
Instead of a single large airship, the system uses multiple smaller modular flyers that can operate independently or couple together. This segmentation avoids the structural complexity and practical difficulties of a large airship while maintaining the capability for indefinite endurance through solar-electric propulsion and modular reconfiguration.
4Adaptability or versatility
If a modular design with multiple flyers is used to improve operational flexibility, then the aircraft can adapt to various missions and conditions, but the system complexity increases
Solution Approach 1:
The aircraft system is segmented into identical or similar modular flyers with standardized interfaces and control systems. This segmentation provides operational flexibility through various configuration options (uncoupled, partially coupled, fully coupled) while managing system complexity through modularity and standardization of components across all modules.
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 modular design enables a high aspect ratio wing platform with improved aerodynamic efficiency, structural robustness, and operational flexibility, allowing for prolonged loitering at high altitudes and adaptability to various planetary atmospheres, while minimizing structural weight and maintaining continuous operation through solar power.
Implementation Method 1
a solar-electric power system for indefinite flight capabilities
Implementation Method 2
a high aspect ratio wing platform with improved aerodynamic efficiency
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Systems and/or methods for forming a multiple-articulated flying system (skybase) having a high aspect ratio wing platform, operable to loiter over an area of interest at a high altitude are provided. In certain exemplary embodiments, autonomous modular flyers join together in a wingtip-to-wingtip manner. Such modular flyers may derive their power from insolation. The autonomous flyers may include sensors which operate individually, or collectively after a skybase is formed. The skybase preferably may be aggregated, disaggregated, and/or re- aggregated as called for by the prevailing conditions. Thus, it may be possible to provide a "forever-on-station" aircraft.