Auto Rotating Canister Descent Control via Dynamic Rotor Pitch
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Solution Overview
Problem
Existing air drop canister systems are highly visible, slow, and difficult to control, leading to damage of supplies due to uncontrolled descent and centrifugal forces, making them impractical for military and emergency applications.
Innovation Solution
An auto-rotating canister (ARC) with a controllable rotor system, including electric motors and servomechanisms, is designed to slow descent and control direction via auto-rotation, using GPS and autopilot systems for precise landing, and can be scaled for various mission requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a bladed rotor is used to control descent, then descent control capability is improved, but centrifugal force causes damage to supplies and equipment
Solution Approach 1:
The rotor system dynamically adjusts blade pitch angles during descent to control rotation speed and direction, transforming from a static structure to an actively controlled dynamic system that adapts to changing descent conditions while maintaining cargo safety
Solution Approach 2:
The system changes operational parameters by varying blade pitch angles and rotation speeds to optimize descent control, allowing precise control of descent rate and horizontal movement while preventing excessive centrifugal forces that could damage supplies
2Measurement precision
If mechanical and electrical control systems are added to the rotor, then descent control precision is improved, but system cost increases making it unsuitable for single use applications
Solution Approach 1:
The rotor system uses automatic control algorithms that process sensor data and adjust blade pitches without requiring complex external control systems, enabling the system to self-regulate its descent trajectory and reduce dependency on expensive mechanical control mechanisms
Solution Approach 2:
The invention replaces complex mechanical control systems with electronic sensors and computer-based control algorithms that can achieve superior precision with fewer moving parts, reducing overall system complexity and cost while improving control accuracy
3Device complexity
If parachute drop is used for supply delivery, then simplicity is maintained, but visibility to enemy forces increases and landing control is lost
Solution Approach 1:
The system transitions from the static, passive parachute configuration to a dynamic rotor-controlled descent system that can actively adjust its trajectory, providing landing control while maintaining relative simplicity through automated control
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 ARC enables precise and controlled delivery of supplies by reducing descent velocity and preventing container rotation, thus protecting contents and allowing for reusable and environmentally friendly deployment.
Implementation Method 1
a bladed rotor operably coupled to the container through a rotor arm
Implementation Method 2
The ARC includes a top-plate assembly configured to support electronic systems or portions thereof
Implementation Method 3
The rotor arm is hingedly connected to the container and configured to pivot to deploy the bladed rotor from a stowed position during free fall
Data Source
AI summary
An apparatus for air dropping equipment and supplies from an aircraft is disclosed herein. The apparatus includes a canister having a rotor system configured to slow the descent at a predetermined altitude to a desired landing speed via auto-rotation and/or with motor assist. The rotor system is configured to prevent the container from spinning about its longitudinal axis during the descent.