UAV Parachute Deployment with Propeller Locking to Prevent Entanglement
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Solution Overview
Problem
Existing UAV parachutes deploy after continuous descent, leading to propeller entanglement with parachute cords, affecting protective efficacy and posing safety risks.
Innovation Solution
A control method that includes obtaining a propeller locking instruction to stop and lock the propeller before deploying the parachute, ensuring the propeller is stationary before parachute deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the parachute is deployed after continuous descent, then the parachute can provide protective effect, but the propeller continuously rotates and entangles with parachute cords
Solution Approach 1:
The patent applies preliminary action by stopping and locking the propeller before deploying the parachute. The control system receives a propeller locking instruction, controls the motor to stop rotating, locks the propeller in a fixed position, and only then deploys the parachute. This sequence prevents the propeller from entangling with parachute cords during deployment while ensuring the parachute provides its protective effect during descent.
2Object-affected harmful factors
If the propeller is stopped and locked before parachute deployment, then propeller entanglement is prevented, but the system requires additional control steps
Solution Approach 1:
The patent applies universality by using the existing motor and control system to perform multiple functions: during normal flight, the motor drives the propeller for flight; during emergency descent, the same motor stops rotating and the control system locks the propeller in position. This multi-functional use of existing components achieves propeller entanglement prevention without requiring separate dedicated locking mechanisms, thereby minimizing the increase in system complexity.
Data Source
AI summary
An aircraft system includes an aircraft, which further includes at least one propeller to provide a flight power for the aircraft; a communication interface configured to communicate with a parachute; at least one storage medium, storing at least one set of instructions for controlling the aircraft system; and at least one processor in communication with the at least one memory. when the aircraft system is in operation, the at least processor executes the at least one set of instruction to: obtain a propeller locking instruction of the aircraft, and perform a corresponding operation based on the propeller locking instruction. The corresponding operation include a first operation. The first operation, corresponds to a scenario where the aircraft is in a flight state, includes: in response to the propeller locking instruction, the aircraft controlling the at least one propeller to stop and locking the at least one propeller, and deploying the parachute by the aircraft.