Capture-and-Release Aircraft Vertical Takeoff
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Solution Overview
Problem
Fixed-wing aircraft require significant runway space for takeoff and landing, which is a challenge for urban areas and conflicts with design objectives for fuel efficiency, range, speed, and payload capacity, while rotary-wing aircraft lack the speed and range of fixed-wing aircraft.
Innovation Solution
A capture-and-release aircraft system with rotor units and anchor-capture devices that can securely engage and release fixed-wing aircraft, allowing for vertical takeoff and landing with reduced ground space requirements, using a frame with multiple rotor units and articulating arms to align and lock onto anchors on the fixed-wing aircraft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If fixed-wing aircraft use conventional runways for takeoff and landing, then they can achieve sufficient lift and speed, but they require significant ground space that conflicts with urban area constraints
Solution Approach 1:
The patent introduces a capture-and-release aircraft as an intermediary system that provides vertical lift capability to fixed-wing aircraft. This mediator enables the fixed-wing aircraft to be lifted vertically without using conventional runways, thus resolving the contradiction between achieving takeoff speed and minimizing ground space requirements
2Speed
If fixed-wing aircraft are designed for maximum thrust and lift during takeoff, then they can achieve rapid ascent, but fuel efficiency and range are compromised
Solution Approach 1:
The capture-and-release aircraft performs the preliminary action of providing vertical lift during takeoff, allowing the fixed-wing aircraft to be lifted without engaging its own high-thrust engines. This separates the vertical ascent function from the fixed-wing aircraft's propulsion system, enabling it to be optimized for fuel efficiency and range while still achieving rapid ascent when needed
3Area of stationary object
If rotary-wing aircraft are used for vertical takeoff and landing, then ground space requirements are reduced, but speed and range are limited compared to fixed-wing aircraft
Solution Approach 1:
The patent merges the vertical lift capability of rotary-wing aircraft with the high-speed cruise capability of fixed-wing aircraft into a single hybrid system. The capture-and-release aircraft provides vertical lift while the fixed-wing aircraft provides forward thrust, combining the advantages of both aircraft types to achieve both compact takeoff/landing and high-speed performance
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
Enables fixed-wing aircraft to take off and land using minimal ground area, balancing the need for range, speed, payload capacity, and fuel efficiency, while maintaining stability and control during capture and release operations.
Implementation Method 1
rotor units secured to the frame, each rotor unit having a rotor with a rotation axis... capable of generating lift
Implementation Method 2
downwash from the rotor units is generally unimpeded by the fixed-wing aircraft
Data Source
AI summary
A capture-and-release aircraft for capturing and releasing fixed-wing aircraft is provided. The capture-and-release aircraft comprises a frame to which is secured a set of rotor units. Each rotor unit has a rotor with a rotation axis, the rotation axes of the rotors being generally parallel. A set of aircraft engagement members is also secured to the frame that can align with a set of anchors of a fixed-wing aircraft to releasably couple with the anchors.