Trajectory Compensating Reticle for Firearm Scope
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Solution Overview
Problem
Existing firearm reticles require shooters to estimate and manually adjust for bullet drop over distance, complicating the aiming process due to the arc trajectory of projectiles.
Innovation Solution
A reticle design featuring trajectory arcs, distance markings, and a milling tree that allows shooters to quickly compensate for bullet drop and determine target distance, using milradian measurements for accurate aiming and range estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed single distance reticle is used, then the reticle structure is simple, but the shooter must manually estimate and adjust for bullet drop at unknown distances
Solution Approach 1:
The reticle pre-calculates and marks bullet drop compensation positions for multiple distances before the shooter needs to use it. The trajectory arcs and distance markings are predetermined based on ballistic data, allowing the shooter to simply align the reticle with the target at the expected distance without manual calculation or adjustment.
Solution Approach 2:
The reticle divides the bullet trajectory into multiple distance segments, with each segment marked by trajectory arcs and distance markings. This allows the shooter to identify which segment corresponds to the target distance and use the appropriate compensation position, rather than requiring a single complex calculation for the entire trajectory.
2Productivity
If manual adjustments are required for bullet drop, then the reticle remains simple, but the engagement speed and accuracy are reduced
Solution Approach 1:
The reticle performs the complex ballistic calculation and compensation determination in advance, encoding the results in the trajectory arcs and distance markings. During engagement, the shooter only needs to visually identify the correct arc and align the reticle, eliminating the time-consuming manual calculation and adjustment steps.
Solution Approach 2:
The trajectory arcs and distance markings serve as an intermediary visual guide between the shooter's observation of the target and the required compensation action. Instead of requiring the shooter to mentally calculate drop and manually adjust, the reticle provides pre-computed visual references that directly indicate the correct aiming position for each distance.
3Measurement precision
If the shooter estimates range manually, then no additional markings are needed, but the distance determination accuracy and speed are reduced
Solution Approach 1:
The reticle segments the distance range into multiple discrete markings, with trajectory arcs corresponding to specific distance intervals. This allows the shooter to quickly identify which segment the target falls into and read the corresponding distance marking, providing precise distance determination without requiring complex measurement calculations.
Solution Approach 2:
The reticle creates a visual copy of the bullet trajectory path and distance information directly in the scope view. The trajectory arcs and distance markings are rendered as visual elements that replicate the ballistic information, allowing the shooter to read off the target distance directly from the reticle without performing separate measurements or calculations.
Data Source
AI summary
A reticle for use in a firearm scope that compensates for the trajectory of a bullet, allowing the shooter to accurately engage the target despite the target's distance from the shooter. The reticle uses a number of trajectory arcs and distance markings that correspond to the target's size and distance to provide the shooter with an accurate aiming of the target. Once the outer edges of the target aligns with the trajectory arcs the target is ready to be engaged. Distance markings, windage markings, and reticle illumination provide for further accuracy of the shot. A milling tree integral to the reticle provides for a quick determination of the target's distance, particularly in instances when the target is not intended to be engaged.