High-Speed Drone With Separate VTOL Propellers And Fixed Wings

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Solution Overview

Problem

Existing aircraft, such as normal airplanes, helicopters, and drones, lack the ability for vertical landing and take-off, have inefficient aerodynamics, slow horizontal speeds, and are limited in long-distance flight capabilities, making them unsuitable for all-weather operations and efficient delivery services.

Innovation Solution

Aircraft equipped with propellers for vertical ascent and descent, stability wings for horizontal flight, and a simplified control structure that allows for high-speed, long-distance travel and all-weather operation without the need for tilt rotors, reducing production costs and accident risks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a helicopter uses a propeller for vertical take-off and landing, then vertical landing and take-off functions are achieved, but horizontal flight speed becomes slow and cruising distance is limited

Engineering Contradiction:
Improvevertical landing and take-off functionVSAvoidhorizontal flight speed
Core Design Contradiction:
Ease of operationVSSpeed

Solution Approach 1:

The aircraft is divided into two functional systems: a vertical take-off and landing system using a propeller, and a horizontal flight system using a fixed wing. This segmentation allows each system to optimize for its specific function, resolving the contradiction between vertical operation capability and horizontal speed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The aircraft integrates multiple functions into a single vehicle design, combining vertical take-off/landing capability with high-speed horizontal flight capability. The fixed wing provides both horizontal flight support and structural stability, while the propeller handles vertical operations, creating a multi-functional aircraft that overcomes the limitations of single-function designs.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If an Osprey-type aircraft uses a tilt rotor for vertical take-off and landing, then vertical landing and take-off functions are achieved, but aerodynamic efficiency deteriorates due to propeller airflow beating against wings

Engineering Contradiction:
Improvevertical take-off and landing functionVSAvoidaerodynamic efficiency
Core Design Contradiction:
Ease of operationVSLoss of energy

Solution Approach 1:

The aircraft separates the vertical take-off function (propeller) from the horizontal flight function (fixed wing), eliminating the aerodynamic interference that occurs in tilt rotor designs where the same rotating blade must serve both functions. The propeller is positioned and oriented to avoid beating against the fixed wing during vertical operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of using a rotating tilt rotor that changes orientation, the design inverts the approach by using a fixed wing that remains stationary during horizontal flight and a separate propeller for vertical operations. This inversion of the traditional rotor-wing integration resolves the aerodynamic efficiency problem.

Inventive Principle:
Principle #13The other way round (Inversion)

3Ease of operation

If a drone is used for vertical take-off and landing, then vertical landing and take-off functions are achieved, but horizontal flight speed becomes slow and long-distance flight capability is limited

Engineering Contradiction:
Improvevertical take-off and landing functionVSAvoidlong-distance flight capability
Core Design Contradiction:
Ease of operationVSDuration of action of moving object

Solution Approach 1:

The aircraft divides functions between a propeller for vertical operations and a fixed wing for horizontal flight. The fixed wing provides aerodynamic efficiency for long-distance horizontal travel, while the propeller handles vertical take-off and landing, overcoming the drone's limitation of slow horizontal speed and short range.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The design changes the operational parameters by using a fixed wing configuration that maintains aerodynamic efficiency at high speeds during horizontal flight, while the propeller operates at optimized parameters for vertical take-off and landing. This parameter optimization enables both vertical capability and long-distance horizontal flight.

Inventive Principle:
Principle #35Parameter changes

4Ease of operation

If a tilt rotor is used for vertical take-off and landing, then vertical landing and take-off functions are achieved, but device complexity increases and accident risk increases

Engineering Contradiction:
Improvevertical take-off and landing functionVSAvoidcontrol structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The aircraft segments the control functions into separate systems: the propeller handles vertical take-off and landing with its own independent control, while the fixed wing handles horizontal flight. This segmentation simplifies the overall control structure compared to the complex tilt rotor mechanism that requires precise angle control and coordination.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The design extracts the tilt rotor mechanism entirely and replaces it with a simpler configuration of a fixed wing and separate propeller. This extraction of the complex rotating mechanism resolves the contradiction by maintaining vertical take-off and landing capability through a simpler, more reliable structure.

Inventive Principle:
Principle #2Taking out (Extraction)

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 vertical take-off and landing, high-speed horizontal flight, efficient energy use, and safe operation in adverse weather conditions, facilitating efficient package delivery and rescue operations with reduced production costs and improved safety.

Implementation Method 1

a propeller for vertical ascent, descent, forward-moving

Methodology Applied
Scientific EffectThrust generation:

Implementation Method 2

a stability wing for horizontal flight

Methodology Applied
Scientific EffectAerodynamic lift: Aerofoil

Implementation Method 3

the airflow given off by the propeller beats against its wings

Methodology Applied
Scientific EffectAirflow generation:

Data Source

PatentUS12420920B2Aerial vehicle such as high speed drone
Publication Date: 2025.09.23 DR NAKAMATS INNOVATION INST
  • US12420920B2 patent drawing
  • US12420920B2 patent drawing
  • US12420920B2 patent drawing

AI summary

By providing propellers for vertical ascent and descent and for horizontal flight, and a blade for horizontal flight, it is possible to obtain an aerial vehicle capable of high-speed horizontal flight and capable of flying a long distance.