Steerable Pallet Range Extension for Airdrop Accuracy
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Solution Overview
Problem
Airdrop cargo delivery is limited by the accuracy and range of traditional pallet-based systems, which face challenges in navigating to precise drop locations due to wind and altitude variations, especially when multiple bundles are deployed serially, leading to significant deviations from the intended target.
Innovation Solution
A steerable container delivery system (CDS) equipped with fins and a range extension device, controlled by a flight management computer (FMC) using GPS and compass data, allows for independent rotation of fins and deployment of a range extension device to steer the cargo container to a specified drop location, enhancing cross-range capability and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional pallet-based airdrop systems are used, then the system is simple and easy to operate, but the accuracy and range of cargo delivery are limited
Solution Approach 1:
The patent applies dynamics by making the fins movable and adjustable during descent. The fins can be independently rotated about a horizontal axis to actively steer the cargo container laterally, transforming a static pallet system into a dynamic, controllable delivery system that adapts to wind and altitude variations
Solution Approach 2:
The flight management computer implements feedback control by continuously monitoring GPS coordinates and compass heading, then adjusting fin positions accordingly. The system calculates the vector to the target location and automatically steers the container by rotating fins to the appropriate angles, creating a closed-loop control system that maintains accuracy despite environmental variations
2Productivity
If multiple cargo bundles are deployed serially, then the delivery capacity is increased, but the deviation from intended target increases significantly
Solution Approach 1:
Each cargo container is equipped with an independent flight management computer that continuously receives GPS data and compass heading, calculating the real-time vector to target. This feedback loop allows each bundle to independently correct its trajectory, ensuring that even when deployed serially, each container maintains accurate targeting rather than following the drift of previous bundles
Solution Approach 2:
The patent replaces the passive mechanical airdrop system with an active electronic control system. Instead of relying on mechanical timing and positioning, the system uses GPS receivers, compass sensors, and electronic fin control to actively guide each container, substituting electronic feedback mechanisms for traditional mechanical precision methods
3Ease of operation
If a blunt or flat bottomed surface is used as the leading edge during descent, then the cargo is easily secured to the pallet, but excessive drag is generated and cross range capability is limited
Solution Approach 1:
The system dynamically adjusts the aerodynamic profile by rotating fins about a horizontal axis during descent. This allows the container to transition between different orientations and drag characteristics, enabling cross-range movement rather than being constrained to a fixed ballistic trajectory determined solely by the blunt leading edge
Solution Approach 2:
The patent adds lateral control capability by introducing fin rotation about a horizontal axis, moving the system from one-dimensional vertical descent to two-dimensional steerable flight. This dimensional addition allows cross-range adjustment while maintaining the simple pallet base for cargo securing
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 CDS system significantly improves the accuracy and range of airdropped cargo by enabling precise steering during descent, reducing the impact of wind and altitude variations, and ensuring multiple bundles can land closer to the intended target, even in hostile environments.
Implementation Method 1
fins positioned at opposite sides of the pallet... configured to be independently rotated on an axis positioned horizontal to the pallet... steer the cargo container to its airdrop location
Implementation Method 2
Aerodynamically, an object that is descending rapidly and has a blunt or flat leading edge has excessive drag
Implementation Method 3
range extension device configured to reduce the glide slope and angle, and increase the range of flight
Implementation Method 4
GPS technology could be used to guide the delivery of cargo through active steerage of the cargo as it descends
Data Source
AI summary
A steerable container delivery system (“CDS”) includes a pallet configured with a pallet steering mechanism and a range extension device for steering a CDS cargo bundle during free fall when airdropped. The pallet steering mechanism and range extension device may be inflated shortly after deployment using compressed air carried by an air tank in the pallet. A flight management computer (“FMS”) continuously monitors the location of the CDS bundle using GPS technology and determines a vector to a drop location based on stored GPS measurements. The FMC continuously monitors and positions the CDS bundle over the drop location, and is able to independently control the position of the CDS bundle, either by rotating the CDS bundle or moving it laterally. At the appropriate altitude, the FMC causes the main parachute to open to slow the descent of the CDS bundle for impact.