Shell Steering Wing with Deployable Auxiliary Wing
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Solution Overview
Problem
Existing shell designs face limitations in increasing steering wing size due to internal diameter constraints, leading to reduced steering performance and increased aerodynamic drag, while methods to enlarge the wing require additional space and separate driving units.
Innovation Solution
A shell with a rotatably mounted steering wing and an auxiliary wing that can be inserted and spread outward using a drive shaft and auxiliary-wing spreading unit, minimizing aerodynamic drag by selectively increasing steering area without additional driving devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the steering wing is enlarged to increase steering performance, then steering performance is improved, but aerodynamic drag increases
Solution Approach 1:
The patent applies the dynamics principle by making the steering wing configuration changeable during flight. The shell starts with a small steering wing for low drag during initial flight, then deploys an enlarged steering wing later for improved steering performance when needed. This dynamic reconfiguration allows the system to optimize between drag and steering performance at different flight stages.
Solution Approach 2:
The patent segments the steering wing into two functional parts: a small initial steering wing that remains on the shell, and a larger deployable steering wing that can be extended when needed. This segmentation allows the system to have both a compact configuration for low drag and an expanded configuration for high steering performance.
2Reliability
If the steering wing is enlarged to increase steering performance, then steering performance is improved, but the internal diameter of the shell becomes insufficient
Solution Approach 1:
The patent applies the nesting principle by placing the large steering wing in a folded or collapsed state within the shell's internal space during initial launch. The steering wing is designed to be stored compactly inside the shell body, similar to a nested doll, and only deployed to full size when the shell is in flight and steering performance is needed.
Solution Approach 2:
The steering wing transitions from a compact stored configuration to an expanded operational configuration during flight. This dynamic transformation allows the system to overcome the internal diameter limitation by having the wing occupy minimal space during launch and expand to full size when steering performance is required.
3Reliability
If a separate internal space is provided for the auxiliary wing to avoid interference with the driving unit, then interference is avoided, but additional space and complexity are required
Solution Approach 1:
The patent merges the auxiliary steering wing with the drive shaft structure. The auxiliary wing is positioned and supported by the drive shaft, eliminating the need for separate internal spaces and additional supporting structures. This integration reduces overall structural complexity while still preventing interference between the wing and driving unit.
Solution Approach 2:
The drive shaft serves multiple functions: it acts as the rotational axis for the steering wing, provides structural support, and simultaneously serves as the mounting structure for the auxiliary wing. This multi-functionality eliminates the need for separate supporting structures and reduces overall device complexity.
Data Source
AI summary
Provided is a shell including: a shell body; a steering wing including a drive shaft and that mounted on an external surface of the shell body; an auxiliary wing including a shaft connection portion which is connected to the drive shaft and moving in the lengthwise direction of the drive shaft within the drive shaft to be inserted into and be spread outward from within the steering wing; an auxiliary-wing holding unit including a holding protrusion which is fixedly arranged in a direction of intersecting the shaft connection portion to selectively hold the auxiliary wing in place; and an auxiliary-wing spreading unit installed within the drive shaft, and that provides driving force for spreading the auxiliary wing outward from within the steering wing when the holding protrusion is disengaged with the shaft connection portion.