Aircraft Ship Integrated Secure and Traverse
Encyclopedia
The Aircraft Ship Integrated Secure and Traverse (ASIST) system was developed by Canadian company Indal Technologies. ASIST completed sea trials by July 31, 1992 and production units are in operation with the Chilean Navy
Chilean Navy
-Independence Wars of Chile and Peru :The Chilean Navy dates back to 1817. A year before, following the Battle of Chacabuco, General Bernardo O'Higgins prophetically declared "this victory and another hundred shall be of no significance if we do not gain control of the sea".This led to the...

, Republic of Singapore Navy
Republic of Singapore Navy
The Republic of Singapore Navy is the naval component of the Singapore Armed Forces , responsible for the defence of Singapore against sea-borne threats and protection of its sea lines of communications. Operating within the crowded littoral waters of the Singapore Strait, the RSN is regarded as...

, Turkish Navy
Turkish Navy
The Turkish Navy is the naval warfare service branch of the Turkish Armed Forces.- Ottoman fleet after Mudros :Following the demise of the Ottoman Empire in the aftermath of World War I, on November 3, 1918, the fleet commander of the Ottoman Navy, Liva Amiral Arif Pasha, ordered all flags to be...

 and United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

.

Mode of Operation

The ASIST system employs a sophisticated electro-optic tracking system which detects a laser beacon-equipped helicopter. The system tracks the helicopter and provide real time
Real-time computing
In computer science, real-time computing , or reactive computing, is the study of hardware and software systems that are subject to a "real-time constraint"— e.g. operational deadlines from event to system response. Real-time programs must guarantee response within strict time constraints...

 helicopter position simultaneously via visual cues to the pilot. A computer-controlled rapid securing device will also be driven by the position data to track the helicopter at low hover
Hover
Hover may refer to:*Hovering , the process by which an object is suspended by a physical force against gravity, in a stable position without solid physical contactIn transport* Hover , nearly stationary flight in a helicopter...

. Once the system has detected that the helicopter has landed on the deck, the securing device automatically approaches the helicopter and secures it. The securing device and traversing system are then used to align the helicopter with the deck tracks and manoeuvre it into a hangar
Hangar
A hangar is a closed structure to hold aircraft or spacecraft in protective storage. Most hangars are built of metal, but other materials such as wood and concrete are also sometimes used...

, all without the need for manned intervention. All ASIST electrical and mechanical systems are modular and are housed in the hangar or below deck level to minimize space and weight requirements.
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