Mark 46 torpedo

Mark 46 torpedo
Mark 46 torpedo
MK46 torpedo launch.jpg
A Mk 46 exercise torpedo launched from USS Mustin.
Type Lightweight torpedo
Place of origin  United States
Service history
In service 1967(Mod 0)
1979(Mod 5)
Used by  United States Navy

 Royal Navy

Production history
Designer Alliant Techsystems
Specifications
Weight 508 lb (231 kg)
Length 8 ft 6 in (2.59 m)
Diameter 12.75 inch(324 mm)

Warhead PBXN-103 high explosive (bulk charge)
Warhead weight 96.8 lb (44 kg)

Engine Two-speed, reciprocating external combustion
Propellant Mono-propellant(Otto fuel II)
Operational
range
12,000 yd (11 km)
Maximum depth > 1,200 ft (365 m)
Speed 40 knots (46 mph, 74 km/h)
Guidance
system
Active or passive/active Acoustic homing
Launch
platform
Mark 32 Surface Vessel Torpedo Tubes, ASW Aircraft, RUM-139 VL-ASROC

Designed to attack high-performance submarines, the Mark 46 torpedo is the backbone of the U.S. Navy's lightweight ASW torpedo inventory, and is the current NATO standard. These aerial torpedoes, such as the Mark 46 Mod 5, are expected to remain in service until the year 2015. In 1989, a major upgrade program for the Mod 5 began to improve its shallow-water performance, resulting in the Mod 5A and Mod 5A(S).

Contents

General characteristics, Mark 46 Mod 5

  • Primary Function: Air and ship-launched lightweight torpedo[1]
  • Contractor: Alliant Techsystems
  • Power Plant: Two-speed, reciprocating external combustion; Mono-propellant (Otto fuel II)
  • Length: 8 ft 6 in (2.59 m) tube launch configuration (from ship),[2] 14 ft 9 in (4.5 m) with ASROC rocket booster[1]
  • Weight: 508 lb (231 kg)[1] (warshot configuration)
  • Diameter: 12.75 in (324 mm)[2]
  • Range: 12,000 yd (11 km)[1]
  • Depth: > 1,200 ft (365 m)
  • Speed: > 40 knots (46 mph, 74 km/h)[1]
  • Guidance System: Homing mode: Active or passive/active acoustic homing[2]
  • Launch/search mode: Snake or circle search
  • Warhead: 96.8 lb (44 kg)[1] of PBXN-103 high explosive (bulk charge)
  • Date Deployed: 1967 (Mod 0);[1] 1979 (Mod 5)
A Mark 46 Mod 5A torpedo is inspected aboard the guided missile destroyer USS Mustin

Yu-7 Torpedo

The Chinese Yu-7 torpedo is said to be based on the Mk 46 mod 2.[3] Currently the Chinese navy use the Yu-7 primarily as an ASW torpedo, deployed on ships and ASW helicopters.[4]


See also

A French Lynx helicopter carrying a Mk 46 torpedo


Notes

  1. ^ a b c d e f g Thomas, Vincent C. The Almanac of Seapower 1987 Navy League of the United States (1987) ISBN 0-9610724-8-2 pp.190-191
  2. ^ a b c Polmar, Norman "The Ships and Aircraft of the U.S. Fleet: Torpedoes" United States Naval Institute Proceedings November 1978 p.160
  3. ^ Chinese Defence Today, “YU-7 Anti-Submarine Torpedo”
  4. ^ (Chinese language)

External links


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