Swarm Drone Fire Retardant Delivery System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wildfire suppression methods using airborne vehicles are costly, inefficient, and limited in capacity, as they require human pilots and can only cover small areas with limited lift capacity and short flight times, making it impractical to operate large numbers of drones for effective fire retardant delivery.
Innovation Solution
A swarm of semi-autonomous, modular drones capable of lifting hundreds of pounds, with interchangeable power modules, rotor nacelles, and wings, allowing for autonomous operation, easy configuration, and continuous operational tempo, enabling the delivery of large volumes of fire retardant over variably-shaped areas without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional airborne vehicles (airtankers, helicopters) are used to deliver fire retardant, then they can carry large payloads, but they are extremely costly to purchase, maintain, and operate
Solution Approach 1:
The patent divides the fire retardant delivery system into many small, independent drone units instead of using a few large vehicles. Each drone carries a small payload (e.g., 2 gallons in a Bambi bucket), but a swarm of drones collectively delivers massive amounts of retardant, achieving the same or greater total capacity as large airtankers while using much smaller, cheaper individual units.
Solution Approach 2:
The patent employs inexpensive, disposable drone units that can be manufactured at low cost (targeting under $10,000 per drone). These drones are designed to be replaced rather than repaired after use, especially in hazardous wildfire environments. The low cost enables deployment of large swarms (1,000-10,000+ drones) that collectively outperform expensive conventional vehicles.
2Quantity of substance
If a single large airtanker is used, then it can deliver large volumes of retardant, but it can only cover a relatively small area with narrow rectangular drop patterns
Solution Approach 1:
The patent segments the delivery system into multiple drone units that can be distributed across a wide geographic area. Each drone operates independently, allowing the swarm to cover vast territories simultaneously. The modular nature enables different drop patterns (circular, rectangular, irregular) to match the shape of fire perimeters, maximizing coverage efficiency.
Solution Approach 2:
The patent transitions from two-dimensional drop patterns (narrow rectangles from single aircraft) to three-dimensional swarm distribution. Drones can operate at different altitudes, approach from multiple directions, and coordinate to create complex drop patterns that conform to irregular fire boundaries, effectively adding spatial dimensions to the delivery capability.
3Weight of moving object
If heavy-lift drones are used to lift hundreds of pounds, then they can carry sufficient fire retardant, but they cost $300,000-$400,000 each making a swarm impractical
Solution Approach 1:
The patent segments the payload capacity requirement across many small drones rather than concentrating it in one large vehicle. Each drone carries a modest payload (e.g., 2-5 gallons of retardant weighing 8-20 pounds), but the collective swarm capacity equals or exceeds that of large airtankers. This segmentation enables use of simple, inexpensive drone designs.
Solution Approach 2:
The patent prioritizes low cost over high individual payload capacity. By accepting smaller per-drone capacity, each unit can be manufactured cheaply (target <10% of heavy-lift drone cost). The system trades individual capability for swarm scalability, enabling deployment of thousands of units rather than a handful of expensive heavy-lift drones.
4Ease of operation
If conventional vehicles with human pilots are used, then they can operate autonomously, but they require human intervention on every sortie increasing operational complexity
Solution Approach 1:
The patent implements autonomous drones that perform all operations independently—navigation, payload delivery, and even self-refilling at water sources. The swarm coordinates automatically without human pilots, with drones communicating and adapting to changing fire conditions in real-time. This self-service capability enables continuous operations at scales impossible for human-piloted vehicles.
Data Source
AI summary
Presently disclosed subject matter integrates a method of using thousands of semi-autonomous unmanned aerial vehicles, herein called drones, to deliver vastly superior amounts of fire retardant over substantially larger and variably-shaped drop patterns. Each drone is able to swap its own batteries with freshly charged batteries and each drone is able to refill its container with water or fire retardant. Once launched, a swarm of drones can perform repeated trips from the water/retardant source to the fire without human involvement other than the high-level tasking of where to drop the retardant. Once a general drop destination and drop pattern shape is designated, the swarm can transport retardant to that location, form itself into the desired drop shape, and deploy retardant. The drone body is designed to be modular so different components can be attached with ease and no special training or knowledge required.