Aircraft instruments

Radar is a system that uses radio waves to determine the distance (ranging), direction (azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations and terrain. The term RADAR was coined in 1940 by the United States Navy as an acronym for "radio detection and ranging". The term radar has since entered English and other languages as an anacronym, a common noun, losing all capitalization.

system of satellites that provide autonomous geo-spatial positioning with global coverage

thumb|upright=1.35|The autopilot control panel of a Boeing 747-200 aircraft An autopilot is a system used to control the path of an aircraft without requiring constant intervention by a human operator. The autopilot does not replace human operators, but it assists them allowing them to focus on broader aspects of operations (for example, monitoring the trajectory, weather and on-board systems).

pressure measurement instrument used to measure fluid flow velocity

thumb|300px|A tachometer that can indicate up to 7000 revolutions per minute|RPM (left)

thumb|300px|Radar and other avionics in the nose of a Cessna Citation I|Cessna Citation I/SP thumb|right|Republic F-105 Thunderchief|F-105 Thunderchief with avionics laid out

thumb|Cutaway of an Anschütz gyrocompass thumb|A gyrocompass repeater

continuously computed dead reckoning

Aviation navigation system

transparent display presenting data within normal sight lines of the user

aircraft instrumentation system consisting primarily of multi-function electronic displays

300px|thumb|Example of an ACARS message In aviation, ACARS (; an acronym for Aircraft Communications Addressing and Reporting System) is a digital data communication system for transmission of short messages between aircraft and ground stations via airband radio or satellite. The protocol was designed by ARINC and deployed in 1978, using the Telex format. More ACARS radio stations were added subsequently by SITA.

radio navigation technology used in aviation

instrument in the cockpit of an aircraft that provides the pilot with information about the flight situation of that aircraft

radio transmitter which emits radio waves in all directions

measurement of the direction from which a received signal was transmitted

instrument used in an aircraft to display the craft's airspeed, typically in knots, to the pilot

In aviation, a full authority digital engine (or electronics) control (FADEC) () is a system consisting of a digital computer, called an "electronic engine controller" (EEC) or "engine control unit" (ECU), and its related accessories that control all aspects of aircraft engine performance. FADECs have been produced for both piston engines and jet engines.

direction or route along which an object travels

electronic device to measure a craft's velocity and orientation

navigation system used by military aircraft

thumb|The reticle of a PSO-1 scope mounted on a Russian SVD [[designated marksman rifle]] thumb|A comparison of different reticles used in telescopic sights thumb|Measurement graticule in an optical microscope thumb|Reticle of Bell & Howell Pocket Comparator thumb|Reticle accessory (PD-8) used in sniper rifles A reticle or reticule, also known as a graticule or crosshair, is a pattern of fine lines or markings built into the eyepiece of an optical device such as a telescopic sight, spotting scope, theodolite, optical microscope or the screen of an oscilloscope, to provide measurement reference

flight instrument

flight instrument used in an aircraft to inform the pilot of the aircraft's heading

thumb|right|Illustration showing the face of a Machmeter reading a Mach number of 0.83

Terrain contour matching, or TERCOM, is a navigation system used primarily by cruise missiles. It uses a contour map of the terrain that is compared with measurements made during flight by an on-board radar altimeter. A TERCOM system considerably increases the accuracy of a missile compared with inertial navigation systems (INS). The increased accuracy allows a TERCOM-equipped missile to fly closer to obstacles and at generally lower altitudes, making it harder to detect by ground radar.

Type of alert system on aircraft

aircraft landing procedure

system of pressure-sensitive instruments that is most often used in aviation

essential avionics component found in modern glass cockpits

Aeronautical Radio, Incorporated (ARINC), established in 1929, was a major provider of transport communications and systems engineering solutions for eight industries: aviation, airports, defense, government, healthcare, networks, security, and transportation. ARINC had installed computer data networks in police cars and railroad cars and also maintains the standards for line-replaceable units.

small screen surrounded by multiple soft keys

digital flight instrument system

marine or aircraft radio-navigation instrument

pressure in the absence of sound waves

Computer software

type of aircraft component

ECAM

device for indicating a slip or skid in an aircraft in flight

Sensors providing attitude information on aircraft

system to assist aircraft to park at airport gates

group of lights used as a central indicator of status of equipment or systems in an aircraft, industrial process, building or other installation

US Navy camera pod carried by the F-14 Tomcat

device that records elapsed time

Real-time computer network airborne systems

internetwork architecture

open-source hardware and software for autopiloting aircraft

airborne flight recorder

flight instrument

instrument measuring presence of ice on a surface