Sealed UAV Launch Tube for Quiet Covert Deployment

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Solution Overview

Problem

Current UAV launch systems lack the capability for quiet and covert operations, and existing technologies do not efficiently conserve UAV battery life for extended flight times.

Innovation Solution

A UAV launch system utilizing a modified grenade launcher with an explosive charge to propel a separable case containing the UAV, which deploys counter-rotating blades for sustained flight, and incorporates a sealing mechanism to minimize noise during launch, allowing for quiet operation and extended flight times.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a traditional UAV launch system is used, then the UAV can be deployed, but the launch process generates significant noise and compromises operational stealth

Engineering Contradiction:
Improvenoise during launchVSAvoidcovert operation capability
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent converts the harmful explosive force into a beneficial propulsive mechanism by directing it through a sealed launch tube. The explosive charge propels the UAV while the containment structure directs the force productively and contains the noise, transforming a harmful factor into the primary propulsion mechanism.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The launch system is divided into separable components: a launch tube that remains with the platform and a separable case containing the UAV that is propelled forward. This segmentation allows the noisy launch mechanism to be isolated in a contained structure while the UAV deploys quietly once clear of the launch tube.

Inventive Principle:
Principle #1Segmentation

2Duration of action of moving object

If the UAV carries sufficient battery for extended flight, then flight duration increases, but the launch system becomes more complex and less deployable

Engineering Contradiction:
Improveflight timeVSAvoidlaunch system complexity
Core Design Contradiction:
Duration of action of moving objectVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical approach of carrying heavy batteries for extended flight with a hybrid propulsion system. An explosive charge provides the initial propulsion impulse, substituting for what would otherwise require large battery capacity, thereby extending flight duration without proportionally increasing system complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Object-affected harmful factors

If a sealed launch mechanism is used to contain noise, then operational stealth is improved, but the launch pressure requirements increase

Engineering Contradiction:
Improvenoise containmentVSAvoidlaunch pressure
Core Design Contradiction:
Object-affected harmful factorsVSStress or pressure

Solution Approach 1:

The launch tube acts as an intermediary structure between the explosive charge and the external environment. It contains the explosive force and directs it productively along the launch path, mediating between the high-pressure explosive event and the external atmosphere, thereby containing noise while managing pressure requirements.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 quiet and covert UAV deployment while significantly reducing battery consumption, thereby increasing UAV flight duration and operational effectiveness.

Implementation Method 1

utilizing a modified grenade launcher with an explosive charge to propel a separable case containing the UAV

Methodology Applied
Scientific EffectExplosive charge: Explosion

Data Source

PatentUS11851177B2Unmanned aerial vehicle launch system
Publication Date: 2023.12.26 OSTERHOUT GROUP INC
  • US11851177B2 patent drawing
  • US11851177B2 patent drawing
  • US11851177B2 patent drawing

AI summary

Aspects of the present invention relate to unmanned aerial vehicle launch technologies and methods for receiving at a head-worn computer (HWC) a plurality of images captured by an unmanned aerial vehicle (UAV) launched from a grenade launcher, and displaying the plurality of captured images in a see-through display of the HWC.