Aircrew Survival Egress Knife
Encyclopedia
United States Army
The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...
aircrew survival knife, designed and initially manufactured by the Ontario Knife Company
Ontario Knife Company
Ontario Knife Company, also known as 'OKC', is an American manufacturer of knives and other edged tools.Ontario Knife Company was founded in 1889 in Naples, New York. The company takes its name from Ontario County, New York...
, and entered service in 2003.
Development and Adoption
The ASEK replaced the World War IIWorld War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
era survival knife which had a number of problems with the leather sheath and handle, the sharpening stone
Sharpening stone
Sharpening stones, water stones or whetstones are used to grind and hone the edges of steel tools and implements. Examples of items that may be sharpened with a sharpening stone include scissors, scythes, knives, razors and tools such as chisels, hand scrapers and plane blades...
, and corrosion
Corrosion
Corrosion is the disintegration of an engineered material into its constituent atoms due to chemical reactions with its surroundings. In the most common use of the word, this means electrochemical oxidation of metals in reaction with an oxidant such as oxygen...
resistance. Requirements for the replacement knife, set by the United States Army Aviation Branch
United States Army Aviation Branch
The Aviation Branch of the United States Army is the administrative organization within the Army responsible for doctrine, manning and configuration for all aviation units....
, included tests in:
- sawing through aircraft skin and acrylic glassAcrylic glassPoly is a transparent thermoplastic, often used as a light or shatter-resistant alternative to glass. It is sometimes called acrylic glass. Chemically, it is the synthetic polymer of methyl methacrylate...
windows - cutting
- hammering
Required features included:
- a point used to stab
- a hand guard
- durability
- light weight
- holes for tying the knife to a stick to act as a spear
Other features, such as an electrically insulated handle, were deemed desirable, but not required. Packaged in the sheath are a special tool for cutting seat belts and a diamond
Diamond
In mineralogy, diamond is an allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at ambient conditions...
impregnated sharpening disk. The ASEK, made by Ontario, was adopted after trials by United States Army Natick Soldier Research, Development and Engineering Center in Natick, Massachusetts
Natick, Massachusetts
Natick is a town in Middlesex County, Massachusetts, United States. Natick is located near the center of the MetroWest region of Massachusetts, with a population of 33,006 at the 2010 census. Only west from Boston, Natick is considered part of the Greater Boston area...
.
The US Army's Defense Supply Center purchased 11,881 Army ASEKS in 2004 and 2005 for equipping aviation life support equipment (ALSE) vests.
Features
It has a number of features that aid in escaping an aircraftAircraft
An aircraft is a vehicle that is able to fly by gaining support from the air, or, in general, the atmosphere of a planet. An aircraft counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines.Although...
, such as the ability to be used as a hammer
Hammer
A hammer is a tool meant to deliver an impact to an object. The most common uses are for driving nails, fitting parts, forging metal and breaking up objects. Hammers are often designed for a specific purpose, and vary widely in their shape and structure. The usual features are a handle and a head,...
to break acrylic glass
Acrylic glass
Poly is a transparent thermoplastic, often used as a light or shatter-resistant alternative to glass. It is sometimes called acrylic glass. Chemically, it is the synthetic polymer of methyl methacrylate...
cockpit windows and cut through an aircraft's aluminium
Aluminium
Aluminium or aluminum is a silvery white member of the boron group of chemical elements. It has the symbol Al, and its atomic number is 13. It is not soluble in water under normal circumstances....
skin. It may also be used as a screwdriver
Screwdriver
A screwdriver is a tool for driving screws and often rotating other machine elements with the mating drive system. The screwdriver is made up of a head or tip, which engages with a screw, a mechanism to apply torque by rotating the tip, and some way to position and support the screwdriver...
or precision edge marker. It includes a crushed diamond
Diamond
In mineralogy, diamond is an allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at ambient conditions...
disk sharpener and a separate blade for cutting through seatbelt webbing
Webbing
Webbing is a strong fabric woven as a flat strip or tube of varying width and fibres often used in place of rope. The name webbing comes from the meshed material frequently used in its construction, which resembles a web...
. The knife is 10.25 inches (26 cm) in length, the blade is 5 inches (12.7 cm) in length, 0.1875 inches (4.8 mm) thick and constructed from 1095 carbon steel.
During the initial evaluation, an electrically insulated handle was considered to be desirable but not mandatory. The United States Army Aeromedical Research Lab
Fort Rucker
Fort Rucker is a U.S. Army post located mostly in Dale County, Alabama, United States. It was named for a Civil War officer, Confederate General Edmund Rucker. The post is the primary flight training base for Army Aviation and is home to the United States Army Aviation Center of Excellence and...
(USAARL) considered the lack of insulated handle of the Ontario knife to be a catastrophic failure of the standard, and Ontario is redesigning their ASEK to meet this requirement.
Gerber LMF II ASEK
Gerber Legendary Blades
Gerber Legendary Blades is a maker of consumer knives and multitools headquartered in Tigard, Oregon, United States, within the Portland metropolitan area. Currently Gerber is a sub-division of Fiskars Brands Inc, owned by the Fiskars company of Finland...
introduced its own ASEK compliant knife (available commercially under the name LMF II) to the military for evaluation. The Gerber ASEK met all requirements, and outperformed the Ontario model in the area of electrical insulation. The Gerber ASEK has been approved for purchase, and Gerber released an additional version with a foliage green handle to match the Army Combat Uniform
Army Combat Uniform
The Army Combat Uniform is the current combat uniform worn by the United States Army. It is the successor to the Battle Dress Uniform and Desert Camouflage Uniform worn during the 1980s and 1990s. It features a number of design changes, as well as a different camouflage pattern from its...
. The knife also comes with a parachute
Parachute
A parachute is a device used to slow the motion of an object through an atmosphere by creating drag, or in the case of ram-air parachutes, aerodynamic lift. Parachutes are usually made out of light, strong cloth, originally silk, now most commonly nylon...
cutter that has a separate sheath which can be attached to a MOLLE
MOLLE (military)
MOLLE |female name]]) is an acronym for MOdular Lightweight Load-carrying Equipment. It is used to define the current generation of load-bearing equipment and rucksacks utilized by the United States armed forces, especially the United States Army, and its use is also growing in the British Army in...
vest.