Magnetic Field Capture of Orbital Planet Samples
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Solution Overview
Problem
Current space missions lack a simple and cost-effective system for capturing planet ground samples in orbit, as existing systems require bulky mechanisms and complex movements, making it difficult to simulate and validate the capture process on Earth.
Innovation Solution
A method using controlled magnetic fields to slow and orient the container, followed by a converging magnetic field for attraction, allowing for a passive container capture with minimal probe movement and inexpensive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional capture systems are used, then the container can be captured in orbit, but the system becomes bulky and complex requiring unfoldable structures and complex probe movements
Solution Approach 1:
The patent replaces complex mechanical capture mechanisms with a magnetic field-based system. Electromagnetic actuators on the probe generate magnetic fields that interact with a passive magnetic container, enabling capture through magnetic attraction rather than mechanical grasping. This substitution eliminates the need for bulky unfoldable structures and complex mechanical movements.
Solution Approach 2:
The system changes the physical state and parameters of the interaction from mechanical contact to magnetic field interaction. By controlling magnetic field strength and distribution, the probe can attract, hold, and maneuver the container without physical contact, simplifying the overall system architecture.
2Reliability
If conventional capture systems are used, then the container can be captured, but the mechanisms require very large dimensions making Earth simulation and validation impossible
Solution Approach 1:
By replacing large-scale mechanical mechanisms with compact electromagnetic actuators and magnetic fields, the system dimensions are reduced to a scale that can be simulated and tested on Earth. Magnetic field generation and interaction can be replicated in terrestrial laboratories, enabling validation before space deployment.
3Device complexity
If passive container is used, then the container design is simplified, but the probe must perform complex movements to capture it
Solution Approach 1:
The magnetic field-based interaction allows the probe to manipulate the passive container through field forces rather than mechanical contact. The electromagnetic actuators can generate attractive forces, torques, and positioning control, enabling the probe to perform necessary maneuvers through field control rather than complex mechanical operations.
Solution Approach 2:
The magnetic field serves as an intermediary between the probe and the passive container. This intermediate field allows for contactless manipulation, enabling the probe to control the container's position and orientation without direct mechanical interaction, thus simplifying both container design and probe operation.
4Adaptability or versatility
If heavy and complex container with remote control and thrusters is used, then the container can be actively controlled, but the overall system weight and complexity increase significantly
Solution Approach 1:
The magnetic field acts as a remote control intermediary, allowing the probe to control the container's attitude and position without the container carrying its own thrusters or active control systems. The magnetic interaction provides sufficient control authority to manipulate the passive container, eliminating the need for heavy onboard control mechanisms.
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 efficient and straightforward capture of planet ground samples in orbit, reducing complexity and cost, and allowing for precise control and alignment of the container for successful transfer to the probe.
Implementation Method 1
a first controlled magnetic field to reduce the angular speeds of the container and orient it in a preferred direction for the capture, is generated on board the probe
Implementation Method 2
the magnetic field on the container side, used for the control and for the attraction, is used to enable the probe to detect its attitude using a magnetometer
Implementation Method 3
a process of attraction of the container relative to the probe is begun using another magnetic field whose field lines converge toward the capture zone of the probe
Data Source
AI summary
A method for capturing a container of planet ground samples moving in space by a probe also moving in space includes, when the probe is on the orbit of the container, at a distance of a few meters therefrom and the receiving face of the probe is oriented toward the container, generating, on board the probe, a first controlled magnetic field to reduce the angular speeds of the container and orient it in a preferred direction for the capture, and, when these speeds have become negligible and the probe is positioned in the correct orientation, while the probe is being brought closer to the container, a process of attraction of the container relative to the probe is begun using another field whose field lines converge toward the capture zone of the probe.