Aerodynamic Bullet with Gas-Actuated Piston Rod
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Solution Overview
Problem
Conventional bullets face challenges in achieving stable flight and minimizing aerodynamic drag, especially at high pressures, which affects their speed and accuracy in long-range shooting.
Innovation Solution
An aerodynamically improved bullet design featuring a piston rod that extends from the tip using gas pressures and an internal chute, combined with a gyroscopic stabilizer assembly, to reduce drag and enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a rod is extended forwardly from the tip of a bullet, then aerodynamic drag is reduced and speed is increased, but the bullet structure becomes more complex and manufacturing difficulty increases
Solution Approach 1:
The rod is designed to be movable rather than fixed, transitioning from a retracted position during firing to an extended position during flight. This dynamic configuration allows the bullet to benefit from reduced drag during flight while maintaining structural simplicity during manufacturing and loading.
Solution Approach 2:
The rod is pre-positioned in a retracted configuration within the bullet interior before firing. The high-pressure gas environment during firing automatically triggers the rod's extension, eliminating the need for complex actuation mechanisms while achieving the desired aerodynamic configuration.
2Productivity
If a rod is extended from the bullet tip using high gas pressure, then aerodynamic efficiency is improved, but the bullet requires additional internal structures (chute, piston) increasing device complexity
Solution Approach 1:
The bullet's own high-pressure gas environment during firing is utilized to extend the rod, eliminating the need for external actuation systems. The gas pressure that naturally occurs during firing serves the dual purpose of propelling the bullet and extending the aerodynamic rod.
Solution Approach 2:
A pneumatic system is implemented where high-pressure gas flows through a chute to a piston, which then extends the rod. This uses the existing gas pressure environment to achieve rod extension without requiring mechanical linkages or complex actuation mechanisms.
3Ease of manufacture
If the rod is completely retracted inside the bullet interior, then manufacturing is simpler, but aerodynamic drag is increased during flight
Solution Approach 1:
The rod transitions from a static retracted position to a dynamic extended position based on flight conditions. During manufacturing and loading, the rod remains retracted for simplicity, but automatically extends during flight to reduce aerodynamic drag, combining manufacturing ease with flight performance.
4Object-affected harmful factors
If the rod extends partially outside the front end of the bullet, then air resistance is reduced, but the bullet requires precise control of extension timing and position
Solution Approach 1:
The rod extension is automatically controlled by the bullet's own gas pressure environment, eliminating the need for external control systems. The high-pressure gas naturally extends the rod to the optimal position, self-regulating the extension timing and position based on firing conditions.
Solution Approach 2:
The rod extension is controlled by changes in gas pressure parameters during firing. As pressure increases, the rod extends; as pressure decreases, the rod retracts. This parameter-based control simplifies the mechanism while achieving precise extension timing and position.
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 solution significantly reduces aerodynamic drag, increasing the bullet's speed and accuracy, with actual test data showing a 9% increase in the standard ballistics coefficient.
Implementation Method 1
pushed downstream by the gas pressures of the discharged bullet itself
Implementation Method 2
the extended rod breaks up or cuts through the air in front of a larger mass so as to reduce resistance and decrease speed loss
Implementation Method 3
gyroscopic stabilization structures that enhance the aerodynamic efficiency of the bullet during flight
Data Source
AI summary
An aerodynamically improved bullet mounted atop a bullet and fired from a discharge chamber of a gun includes a bullet having a rear portion and a front portion that, together, defines an interior area. A rod having a linear and elongate configuration is movable between a retracted configuration completely inside the interior area and an extended configuration partially extending forwardly of the bullet the rod being pushed downstream by the gas pressures of the discharged bullet itself.