{"id":61664,"date":"2026-04-08T15:56:36","date_gmt":"2026-04-08T15:56:36","guid":{"rendered":"https:\/\/elistair.com\/?p=61664"},"modified":"2026-04-08T15:56:37","modified_gmt":"2026-04-08T15:56:37","slug":"rpas-definition","status":"publish","type":"post","link":"https:\/\/elistair.com\/fr\/glossary\/rpas-definition\/","title":{"rendered":"Definition of RPAS"},"content":{"rendered":"

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RPAS – Remotely Piloted Aircraft System<\/h1>\n
\n

An RPAS<\/strong> is a complete aviation system. It includes a remotely piloted aircraft (RPA)<\/a>, remote control station, and communication links. These components combined allow the aircraft to fly safely and transmit data.<\/p>\n<\/blockquote>\n

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RPAS : Core Concepts<\/h2>\n

RPA – Remotely Piloted Aircraft\u00a0<\/h3>\n

An RPA<\/strong> is the primary flying component of an RPAS. It refers to the actual aircraft<\/strong> that operates without a pilot onboard but under the control of a remote pilot.<\/p>\n

UAV – Unmanned Aerial Vehicle<\/h3>\n

A UAV refers to an aircraft only, which is flown without a pilot inside. It often describes drones, but does not refer to the entire system.<\/p>\n

Drone<\/h3>\n

Drone<\/strong>\u00a0is a popular term used to describe UAVs and RPAS<\/strong>. It is not a technical or regulatory term.<\/p>\n

Autonomous Flight<\/h3>\n

Autonomous flight refers to the pre-programmed instructions an aircraft follows with little or no real time input from the remote pilot. Some RPAS<\/strong> can switch between autonomous flight and manual control.<\/p>\n

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RPAS – System Components<\/h2>\n

Payload and Sensors<\/h3>\n

L' payload<\/strong> includes the tools or equipment that an RPAS<\/strong> carries to accomplish a mission. This may be surveillance cameras, inspection tools, or sensors that detect datas such as motion or heat. Sensors measure physical information and turn it into data useful to the remote pilote or command center.<\/p>\n

Telemetry and Data Link<\/h3>\n

Telemetry<\/strong> is the information the aircraft sends about its status, such as altitude, speed, and sensor data. The data link is the connection which sends commands to the RPAS<\/strong> and brings this information back to the pilot.<\/p>\n

Transponder<\/h3>\n

A transponder<\/strong> is a device that allows the aircraft to be identified by air traffic systems<\/strong>. This helps
avoid conflicts with other aircraft in controlled airspace.<\/p>\n

Reliability and Redundancy<\/h3>\n

Redondance<\/strong> means integrating backup systems, such as additional sensors, power sources, or
communication links, allowing the system to continue operating if one component fails.<\/p>\n

In an RPAS<\/strong>, redundancy improves overall reliability, meaning the system can operate consistently and safely even in the event of a malfunction or unexpected issue.<\/p>\n

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Flight Operations<\/h2>\n

VLOS – Visual Line of Sight<\/h3>\n

VLOS<\/strong> operations require the pilot to maintain visual contact with the RPAS. This is a common requirement for safe and regulated flight.<\/p>\n

BVLOS – Beyond Visual Line of Sight<\/h3>\n

BVLOS<\/strong> flights occur when the RPAS operates beyond the pilot\u2019s direct visual range. In this case, the flight depends on strong data links, reliable sensors, and continuous telemetry to ensure safe navigation.<\/p>\n

Flight Planning<\/h3>\n

Flight planning<\/strong> is the process of preparing a drone mission before takeoff. It includes for example:<\/p>\n