Attack Helicopter Ammunition Duct Butt Line Stability
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Solution Overview
Problem
Existing attack helicopters experience stability and vibration issues during ammunition firing, which can lead to missed targets and positional shifts of the center of gravity, due to the placement and distribution of ammunition.
Innovation Solution
The attack helicopter design incorporates an ammunition duct that extends along the body's butt line, allowing almost all ammunition to be positioned in a single direction, reducing the need for an ammunition box and minimizing blockage risks through inclined and radiused configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ammunition is stored in an ammunition box placed in the body of the attack helicopter, then the ammunition can be supplied to the machine cannon, but the center of gravity shifts during firing causing stability problems
Solution Approach 1:
The invention extracts the ammunition from the traditional ammunition box placement and repositions it to extend along the butt line. This extraction and repositioning eliminates the center of gravity shift problem during firing while maintaining reliable ammunition supply to the machine cannon.
Solution Approach 2:
The ammunition arrangement transitions from a three-dimensional box structure to a linear configuration along the butt line. This dimensional change optimizes the center of gravity position and eliminates instability during firing while preserving ammunition supply functionality.
2Reliability
If ammunition is positioned in a traditional ammunition box, then ammunition supply is enabled, but vibration problems occur during firing
Solution Approach 1:
The invention extracts ammunition from the traditional box configuration and repositions it along the butt line, eliminating the vibration problems associated with box-based ammunition storage while maintaining continuous ammunition supply to the machine cannon.
3Reliability
If ammunition duct is placed lateral to the body, then ammunition can be transmitted to the machine cannon, but the aerodynamic characteristics are impaired
Solution Approach 1:
The invention merges the ammunition duct configuration with the body's butt line, integrating the ammunition transmission path into the existing aerodynamic structure. This eliminates the need for separate lateral ducts that would impair aerodynamics while ensuring reliable ammunition transmission.
4Quantity of substance
If ammunition box is placed at pilot compartment level, then ammunition storage is enabled, but maintenance access becomes difficult
Solution Approach 1:
The invention extracts ammunition from the pilot compartment level location and redistributes it along the butt line. This extraction improves technician accessibility during maintenance while preserving adequate ammunition storage capacity.
Data Source
AI summary
An attack helicopter has a body exposed to air flow during the flight of the respective air vehicle, at least one ammunition fired to attack a target, at least one machine cannon enabling the ammunition to be fired, at least one ammunition duct on the body, enabling the ammunition to be placed therein and the ammunition to be transferred to the machine cannon, and a butt line arranged so as to extend lengthwise on the air vehicle and symmetrically divide the air vehicle in two.