Analog Slide Rule for Sniper Density Altitude Compensation

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Solution Overview

Problem

Existing tools for snipers and long-range shooters, both software-based and non-software based, face challenges in providing accurate firing solutions due to reliance on fixed air density values, complexity, battery dependency, and environmental durability, especially in combat conditions.

Innovation Solution

A stand-alone analog slide rule calculator with interchangeable slides that provide matrices of firing solutions based on various density altitude values, allowing users to select the appropriate solution for specific bullet types and muzzle velocities, and adaptable to different telescopic sights and aiming systems, without requiring power or integration with the firearm.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If software-based ballistic computers are used to calculate firing solutions, then measurement precision is improved, but reliability deteriorates due to battery dependency and environmental vulnerability

Engineering Contradiction:

Improvefiring solution accuracyVSAvoidoperational reliability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent replaces software-based ballistic computers with a mechanical analog slide rule device that uses physical sliding scales and alignment mechanisms to calculate firing solutions. This mechanical system eliminates battery dependency and electronic vulnerability while maintaining calculation capability through purely mechanical means.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs a simple, inexpensive analog device that can be easily replaced if damaged, rather than investing in expensive, complex electronic systems that require maintenance and are vulnerable to environmental damage. The simplicity makes it reliable in harsh conditions.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If analog slide rule devices are used for firing solutions, then reliability is improved, but measurement precision deteriorates due to fixed air density values

Engineering Contradiction:

Improveenvironmental durabilityVSAvoidfiring solution accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent introduces dynamic adjustability to the analog slide rule by incorporating movable slides with varying air density values. Users can adjust the slides to match current atmospheric conditions, transforming a static device into a dynamic one that adapts to changing environmental parameters, thereby maintaining precision while preserving reliability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent enables users to change physical parameters of the device by selecting different slide positions and configurations that correspond to different air density values, temperature conditions, and altitude parameters. This allows the device to maintain accuracy across varying environmental conditions.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If ballistic computers are used, then measurement precision is improved, but device complexity increases requiring advanced user knowledge

Engineering Contradiction:

Improvefiring solution accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent divides the complex ballistic calculation process into separate, manageable segments represented by individual slides for different parameters (air density, temperature, altitude, muzzle velocity). Each slide handles a specific aspect of the calculation, making the overall system less intimidating and easier to use while maintaining precision.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces pre-calculated ballistic coefficient slides as intermediaries that simplify the calculation process. These slides contain pre-computed data that mediates between the user's input parameters and the final firing solution, reducing the cognitive load and knowledge required while maintaining accuracy.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Measurement precision

If reticle systems with density altitude graphs are used, then measurement precision is improved, but adaptability deteriorates due to proprietary scope integration requirements

Engineering Contradiction:

Improvetrajectory compensation accuracyVSAvoidequipment compatibility

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent creates a universal analog slide rule device that can be used with any firearm and telescopic sight combination, unlike proprietary reticle systems. The device functions independently of specific equipment, providing trajectory compensation calculations that are adaptable to various muzzle velocities, bullet types, and scope configurations through interchangeable slides.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS8584944B2Field density altitude compensator apparatus, kit, and method

Publication Date: 2013.11.19 WHITE TAYLOR A

AI summary

An apparatus, a kit, and a method of use thereof for assisting snipers or long-range shooters in arriving at a firing solution for adjustment of an aiming system are provided. The apparatus can include a housing including a viewing area and a slide including a matrix of firing solutions printed thereon based on a plurality of density altitude values. The slide is movable with respect to the housing such that a portion of the matrix of firing solutions is viewable in the viewing area of the housing based on a density altitude value. This allows a user to adjust the trajectory compensation of a telescopic sight or any other aiming system by using the current measured density altitude.