Since the beginning of World War I in 1914, magneto-equipped aircraft engines have typically been dual-plugged, whereby each cylinder has two spark plugs, with each plug having a separate magneto system.

Since the advent of technology, it is possible for aircraft and boats to parade.

Since the signal frequency is changing, by the time the signal returns to the aircraft the transmit frequency has changed.

Since atmospheric pressure reduces as the aircraft climbs, power drops as a function of altitude in normally aspirated engines.

Since Wankel engines operate at a relatively high rotational speed with relatively low torque, propeller aircraft must use a Propeller Speed Reduction Unit ( PSRU ) to keep their propellers within the proper speed range.

Since that time aircraft capabilities had improved considerably, and existing weapons were unlikely to have any effect on a raid.

Since the mid-1990s, Alenia Aermacchi has participated in programs for the supply of engine nacelles for civil aircraft.

Since the bulk of both troops and aircraft were American, Brereton, a U. S. Army Air Forces officer, was named by Eisenhower on 16 July and appointed by SHAEF on 2 August.

Since the end of the First World War, aircraft types in British military service have generally been known by a name ( e. g. " Spitfire "), with individual variants recognised by mark numbers, in contrast to the systems such as that used in the United States, where an aircraft type is primarily identified by an alphanumeric designation.

Since the late 1930s it has been the most common form for a fixed wing aircraft.

Since most of the flight was on " instruments " and Earhart had no training for this type of flying, she did not pilot the aircraft.

Since May 2011 the aircraft in principal use has been an MD Helicopters MD Explorer 902.

Since 1987, it has grown from having about 60 aircraft based at the airport to about 165.

Since 1940s, the term " strike fighter " was occasionally used in the navies to refer to fighter aircraft capable of performing air-to-surface strikes, such as the Westland Wyvern and Blackburn Firebrand.

Since WWI aircraft were largely built from wood to keep their weight down, BFW was equipped with the very latest joinery plant.

Since the times of World War I and into the interbellum, other classes of aircraft, light bombers, medium bombers, dive bombers, reconnaissance, fighters, fighter-bombers, could and did perform air strikes in the battlefield environment.

Since the boom is being generated continually as long as the aircraft is supersonic, it fills out a narrow path on the ground following the aircraft's flight path, a bit like an unrolling red carpet and hence known as the boom carpet.

Since the aircraft was flying in moderate to heavy rain, the NTSB calculated that the water flowing on the wings would have further increased the stall speed by about 1. 5 percent.

Since 2000, the airline has operated a fleet consisting entirely of de Havilland Canada / Bombardier Dash 8 aircraft.

Since the 1960s this role has been largely superseded by satellites, long range aircraft and weather buoys.

Since drag rises rapidly with speed, a key priority of supersonic aircraft design is to minimize this force by lowering the coefficient of drag.

Since 1995, the number of major civil aircraft accidents caused by wind shear has dropped to approximately one every ten years, due to the mandated on-board detection as well as the addition of Doppler weather radar units on the ground.

Since a civilizational crisis involves also a crisis in private interests and in the ruling class, reaction is normally found among those who feel themselves to be among the ruling class.

Since Luke-Acts was originally a single work, it is important to note that the purpose of Acts is normally examined in conjunction with the Book of Luke.

Since the reference model given for traffic policing in the network is the GCRA, this algorithm is normally used for shaping as well, and single and dual leaky bucket implementations may be used as appropriate.

Since the low pH of the stomach normally kills ingested bacteria, antacids increase the vulnerability to infection.

Since those boards generally lacked multiplier and voltage adjustment, and normally only supported 133 MHz FSB, adjustments would still be needed for full speed operation.

Since the flow of a baseball game has natural breaks to it, and normally players act individually rather than performing in clusters, the sport lends itself to easy record-keeping and statistics.

Since one person needs to cover the entire court, singles tactics are based on forcing the opponent to move as much as possible ; this means that singles strokes are normally directed to the corners of the court.

Since commercial signage usually has limited physical space, signage is normally in French alone.

Since a " perfect vacuum " contains no charged particles, it normally behaves as a perfect insulator.

Since family names are normally written last in European societies ( except in Hungary ), the term last name is commonly used for family name, while in East Asia ( with vertical writing ) the family name may be referred to as upper name ( as in Japanese ).

Since honey normally exists below its melting point, it is a supercooled liquid.

Since the reign of Edward VII a clerk in holy orders in the Church of England has not normally received the accolade on being appointed to a degree of knighthood.

Since the energy-momentum tensor T < sub > μν </ sub > is normally understood to be due to concentrations of matter in four-dimensional space, the above result is interpreted as saying that four-dimensional matter is induced from geometry in five-dimensional space.

Since it is assumed in cosmology that the particles we see were created using the same physics we measure today, it would normally be expected that the overall baryon number should be zero, as matter and antimatter should have been created in equal amounts.

Since throughput is normally defined in terms of quantified digital data, the term ' throughput ' is not normally used ; the term ' bandwidth ' is more often used instead.

Since each user will normally have their own IP address, commercial testing products ( such as HP's Loadrunner software ) can use IP spoofing, allowing each vuser its own " return address ", as well.

Since the attacker normally can't see any reply packets, the sequence number must be guessed in order to hijack the connection.

Since ectopic pregnancies are normally discovered and removed very early in the pregnancy, an ultrasound may not find the additional pregnancy inside the uterus.

Since El was normally identified with Cronus and Hammon was also identified with Cronus, it seemed possible they could be equated.

Since antibodies are normally invisible, special strategies must be employed to detect these bound antibodies.

Since software is a vital contributor and inclusive of the system operation it is assumed the software will function normally as intended.

Since 1840 the title " Dean " has been appended to that of Precentor, hence the Dean of St David's formally being " Dean and Precentor " and his seat being upon what is normally regarded in most places as on ' Cantoris ' side, with a stall ' in quire ' reserved for the Bishop.