Inverted Parachute Deployment via Perimeter Rocket Trajectories
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Solution Overview
Problem
Conventional parachute deployment systems often fail to quickly and effectively deploy a parachute during emergencies, leading to potential aircraft damage due to insufficient inflation and slowing.
Innovation Solution
A rocket-based inverted parachute deployment system, where multiple rockets tethered to the parachute's perimeter are propelled to apply initial upward and subsequent outward forces, rapidly deploying and filling the parachute by pulling it down, optimizing their trajectory to ensure rapid and precise deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional parachute deployment systems are used, then the system is simple and reliable, but the parachute deployment time is too long and insufficient to prevent aircraft damage
Solution Approach 1:
The parachute is pre-positioned in an inverted configuration above the aircraft, with extraction panels already prepared and rockets ready for immediate ignition. This preliminary preparation eliminates deployment delays by having the parachute ready in a state that allows rapid extraction and inversion, directly addressing the speed limitation of conventional systems.
Solution Approach 2:
The parachute is deployed in an inverted configuration (canopy below, rigging above) rather than the conventional right-side-up orientation. This inversion allows the extraction panels to be pulled upward by rockets, which then causes the parachute to flip and fill from the bottom up, enabling much faster deployment than traditional methods where the parachute must be pulled from a packed state.
2Loss of time
If the parachute is deployed quickly, then aircraft damage is prevented, but the deployment force required increases significantly
Solution Approach 1:
The extraction panels are pre-attached to the parachute canopy and positioned for immediate extraction. When rockets ignite, these pre-positioned panels provide the initial leverage and mechanical advantage needed to rapidly invert and deploy the canopy, reducing the peak force required compared to pulling a fully packed parachute from scratch.
Solution Approach 2:
By inverting the parachute configuration, the rockets pull the extraction panels upward, which causes the canopy to flip and fill in a sequence that distributes the deployment force more efficiently over time, rather than requiring a single large force impulse needed in conventional deployments.
3Productivity
If rockets are used for deployment, then deployment speed increases, but the risk of rocket malfunction or trajectory deviation increases
Solution Approach 1:
The deployment function is divided into distinct segments: rockets provide only the initial extraction impulse, while dedicated extraction panels handle the canopy inversion and filling process. This segmentation means that even if a rocket malfunctions, the extraction panels can potentially compensate, and the system has built-in redundancy through multiple extraction panels distributed around the parachute perimeter.
Solution Approach 2:
The extraction panels serve as intermediaries between the rockets and the parachute canopy. Rather than rockets directly manipulating the entire parachute, they first activate the extraction panels, which then mediate the complex task of inverting and filling the canopy. This intermediary mechanism isolates the reliability-critical rocket function from the more complex canopy manipulation tasks.
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
This system deploys the parachute more rapidly than conventional methods, effectively recovering aircraft in dangerous low-altitude or low-speed conditions by quickly extracting and filling the parachute, thereby preventing damage.
Implementation Method 1
A rocket-based inverted parachute deployment system, where multiple rockets tethered to the parachute's perimeter are propelled to apply initial upward and subsequent outward forces
Implementation Method 2
The parachute may not slow the aircraft enough to prevent the aircraft from being damaged upon landing
Data Source
AI summary
A system to deploy a parachute is disclosed. In various embodiments, a plurality of rockets are attached to a perimeter of the parachute. Each of the rockets is configured to fly initially in a first direction substantially in a direction of deployment of the parachute and to fly subsequently along a trajectory that includes a component that is substantially perpendicular to the direction of deployment and extends radially from a center of the parachute.