Autorotation Rotor for Vertical Takeoff Without Torque

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Solution Overview

Problem

Existing rotating wing aircraft systems, such as helicopters, are complex, costly, and difficult to pilot due to their naturally unstable nature and requirement for complex torque counteracting mechanisms.

Innovation Solution

A rotating wing system that uses autorotation as the basis of its operation, where the rotor is not driven by a motor and generates lift without thrust, allowing for vertical takeoff and landing, hovering, and stable flight without the need for torque counteracting mechanisms or blade angle control systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a motor-driven rotor system is used (helicopter), then vertical takeoff and landing capability is achieved, but the system becomes naturally unstable and requires complex torque counteracting mechanisms

Engineering Contradiction:

Improvevertical takeoff and landing capabilityVSAvoidtorque counteracting mechanisms

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent removes the motor that drives the rotor from the helicopter system, extracting the source of torque generation. The rotor is instead driven by airflow from below, eliminating the need for complex torque counteracting mechanisms while preserving vertical takeoff and landing capability through pure autorotation

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent inverts the traditional helicopter airflow direction. Instead of the rotor pushing air downward to generate lift, the airflow is directed upward from below the rotor, causing the rotor to rotate in the opposite direction and generate lift without creating destabilizing torque

Inventive Principle:

Principle #13The other way round (Inversion)

2Ease of operation

If motor-driven rotors with blade angle control mechanisms are used, then lift and thrust control is achieved, but manufacturing and operational costs increase

Engineering Contradiction:

Improvelift and thrust controlVSAvoidmanufacturing and operational costs

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The patent removes the complex blade angle control mechanisms (swashplates, linkages, and actuators) from the system. Lift and thrust are controlled solely by varying the rotor's rotational speed, which is achieved by controlling the airflow rate from below, dramatically simplifying the mechanical structure and reducing manufacturing costs

Inventive Principle:

Principle #2Taking out (Extraction)

3Stability of the object's composition

If multiple motor-driven rotors rotating in opposite directions are used, then torque is counteracted, but flight time is limited by battery capacity

Engineering Contradiction:

Improvetorque balanceVSAvoidflight time

Core Design Contradiction:

Stability of the object's compositionVSDuration of action of moving object

Solution Approach 1:

The patent removes all motor-driven rotor systems from the aircraft, eliminating the need for batteries and electrical power systems. The entire aircraft is propelled by a conventional propeller, while the main rotor operates purely by autorotation, enabling significantly extended flight times limited only by fuel capacity rather than battery capacity

Inventive Principle:

Principle #2Taking out (Extraction)

4Stability of the object's composition

If a gyroplane autorotation system is used, then natural stability is achieved, but vertical takeoff and hovering capability is lost

Engineering Contradiction:

Improvenatural stabilityVSAvoidvertical takeoff and hovering capability

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent inverts the airflow direction compared to traditional gyroplanes. By directing airflow upward from below the rotor instead of relying on forward motion to drive air through the rotor from above, the system achieves both natural stability through autorotation and the ability to hover and perform vertical takeoff and landing operations

Inventive Principle:

Principle #13The other way round (Inversion)

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 system achieves natural stability, simplicity, safety, and reduced operational costs, enabling vertical takeoff and landing, hovering, and efficient autorotation, while eliminating the complexity and costs associated with traditional helicopter systems.

Implementation Method 1

The rotor rotates freely about the rotation shaft driven by a phenomenon called autorotation, in which a flow of air passing through the blades causes them to rotate and generate lift

Methodology Applied

Scientific EffectAutorotation:

Implementation Method 2

a rotating wing that provides lift to an aircraft

Methodology Applied

Scientific EffectAerodynamic lift: Aerofoil

Data Source

PatentEP4538172A1Induced autorotation rotary wing

Publication Date: 2025.04.16 GALLARDO ROSADO MAYDELÍ

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AI summary

This invention describes a rotating wing that provides lift to an aircraft and that is driven by autorotation. It is a naturally stable rotating wing as it does not generate torque and is very safe because it uses autorotation at all times to drive its blades. The design of the blades allows you to use the autorotation in two different ways. The first dependent on the airflow created by moving the aircraft from one place to another and which provides a cruise flight mode and the second independent of the aircraft's movement from one place to another to provide a static flight mode that includes the ability to take off and land vertically, as well as hover at a static point in the air.