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Type 14A Helix Lightweight Torpedo

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Type 14A Helix Lightweight Torpedo
USS Roosevelt (DDG-80) launches Mk 54 torpedo in April 2014.JPG
TypeLightweight torpedo
Place of originBelfras
Service history
In service2006-present
Used byBelfrasian Navy
Production history
Designed2001
Produced2004
Specifications
Weight275 kilograms (606 lb)
Length2.65 metres (8.7 ft)
Diameter324 millimetres (12.8 in)

Maximum firing range+10 kilometres (5.4 nmi)
Warhead weight43.5 kilograms (96 lb)

EngineReceiprocating external combustion engine
Speed+40 knots (46 mph)
Guidance
system
Active/passive acoustic homing
Launch
platform
Surface vessel torpedo tubes, ASW aircraft, Peltast Missile, Aydin CAPTOR Mine

The Type 14A Helix Lightweight Torpedo is a 324mm caliber, acoustic-homing torpedo developed for anti-submarine warfare (ASW) operations. Designed as a versatile and compact solution for engaging underwater threats, the Helix is capable of deployment from a variety of platforms, including surface ships, helicopters, and fixed-wing aircraft. It serves as the cornerstone of ASW operations for the Belfrasian Navy and Belfrasian Air Force, providing a reliable, all-weather solution for detecting and neutralizing hostile submarines.

The Type 14A Helix was introduced in 2006 as a replacement for an aging inventory of lightweight torpedoes. These older systems, while effective in specific roles, lacked the modularity and technological advancements necessary for modern naval warfare. The Helix was designed to unify these capabilities into a single weapon system, offering advanced guidance technology, increased range, and multi-platform compatibility. Its introduction marked a significant leap forward in ASW technology for the Belfrasian military.

At its core, the Helix torpedo is equipped with a state-of-the-art active/passive acoustic homing system, allowing it to detect, track, and engage high-speed submarines with precision. This guidance suite is coupled with a robust propulsion system, enabling the torpedo to achieve speeds exceeding 40 knots (46 mph) and engage targets at distances of over 10 kilometers (5.4 nautical miles). Its low drag and compact design make it particularly effective in both open-ocean and confined coastal environments, ensuring operational flexibility across diverse mission profiles.

The Helix torpedo is also designed for seamless integration with modern delivery systems, including rotary-wing and fixed-wing aircraft, as well as warship-mounted torpedo tubes. Additional launch methods, such as compatibility with the Peltast Missile for vertical launch and integration with the Aydin CAPTOR Mine, further enhance its versatility.

Design

Torpedo in a HAAS-H kit being deployed

The development of the Type 14A Helix Lightweight Torpedo began in the late 1990s in response to an operational gap identified by the Belfrasian Navy. At the time, the fleet relied on two separate lightweight torpedo models: one optimized for open-ocean engagements and another for confined littoral operations. While effective in their respective roles, the dual-system approach presented logistical challenges and limited flexibility. Recognizing the need for a unified solution, the Navy initiated a program to create a single, versatile torpedo capable of excelling in both environments.

The Helix torpedo's design process focused on leveraging advancements in propulsion, guidance, and materials science to create a cutting-edge ASW weapon. The design incorporated a reciprocating external combustion engine, which offered a compact yet powerful propulsion system. This engine was optimized for low-noise operation to minimize detection by hostile submarines while maintaining a top speed exceeding 40 knots (46 mph). The propulsion system's efficiency also extended the torpedo's range, ensuring it could engage targets at distances greater than 10 kilometers (5.4 nautical miles).

Guidance was another critical area of focus. The Helix was equipped with a dual-mode active/passive acoustic homing system, enabling it to adapt to various operational scenarios. In active mode, the torpedo emits acoustic pulses to locate targets, making it ideal for detecting stationary or slow-moving submarines. In passive mode, the torpedo relies on the detection of sound signatures, allowing it to engage high-speed or stealthy targets with precision. This dual-mode capability significantly enhanced the Helix's versatility compared to its predecessors.

The torpedo's warhead design also received significant attention during development. Engineers opted for a 43.5-kilogram (96 lb) high-explosive warhead with a shaped charge, capable of penetrating submarine hulls with maximum lethality. The warhead was paired with a proximity fuze to ensure detonation occurred at the optimal distance from the target, maximizing damage while minimizing the risk of premature detonation.

Modularity was a key consideration throughout the Helix's development. The torpedo was designed to integrate seamlessly with existing 324mm torpedo tubes on surface ships, eliminating the need for costly modifications. Additionally, specialized deployment kits were developed to enable launches from helicopters and fixed-wing aircraft. These kits, such as the Low-Altitude Anti-Submarine Warfare Helix Kit (LAAS-H) and High-Altitude Anti-Submarine Warfare Helix Kit (HAAS-H), ensured the torpedo could be safely and effectively deployed across a range of platforms.

The final phase of development involved extensive testing and evaluation in a variety of environments, from deep-ocean scenarios to shallow coastal waters. These trials validated the torpedo's performance against a wide range of submarine targets, including high-speed nuclear-powered vessels and stealthy diesel-electric submarines. By 2006, the Type 14A Helix was ready for deployment, marking a new era in Belfrasian ASW capabilities.

Operational capabilities

The Type 14A is equipped with a 43.5-kilogram (96 lb) warhead and boasts a maximum range exceeding 10 kilometers (5.4 nautical miles). Its design allows for deployment from standard 324mm torpedo tubes on surface vessels without modification. Additionally, it can be launched from anti-submarine warfare (ASW) aircraft using specialized kits:

Low-Altitude Anti-Submarine Warfare Helix Kit (LAAS-H):
Enables deployment from helicopters, utilizing a drag parachute and wave-penetrating apparatus to ensure safe water entry.
High-Altitude Anti-Submarine Warfare Helix Kit (HAAS-H):
Facilitates release from fixed-wing aircraft at altitudes up to 20,000 feet. Upon deployment, the torpedo glides to approximately 300 feet before entering the water to seek out its target. This kit incorporates modified JDAM technology with micro-computers and antennas for in-flight guidance updates.

The torpedo is also integrated into the Peltast Missile system for vertical launch capabilities from surface warships and is compatible with the Aydin CAPTOR Mine, further extending its operational flexibility.

Users

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