Project close Used as a roadmap to accomplish specific tasks, these phases define the project management lifecycle.
History[ edit ] The first in-flight film screened during the Parade of Progress Exposition in Chicago The first in-flight movie was in on Aeromarine Airways showing a film called Howdy Chicago to its passengers as the amphibious airplane flew around Chicago.
The aircraft never entered service. InDavid Flexer of Inflight Motion Pictures developed the 16mm film system using a inch reel for a wide variety of commercial aircraft. Capable of holding the entire film, and mounted horizontally to maximize space, this replaced the previous inch-diameter film reels.
InTWA committed to Flexer's technology and was first to debut a feature film in flight. These early systems consisted of in-seat audio that could be heard with hollow tube headphones. The electronic headsets were initially available only on selected flights and premium cabins whereas economy class still had to make do with the old pneumatic headsets.
Throughout the early to mids, some in-flight movies were played back from videotape, using early compact transistorized videotape recorders made by Sony such as the SV and PV and Ampex such as the VR and VRand played back on CRT monitors mounted on the upper sides in the cabin above the passenger seats with several monitors placed a few seats apart from each other.
The audio was played back through the headsets. Flight attendants could now change movies in-flight and add short subject programming. In the late s and early s, CRT -based projectors began to appear on newer widebody aircraft, such as the Boeing These used LaserDiscs or video cassettes for playback.
Some airlines upgraded the old film IFE systems to the CRT-based systems in the late s and early s on some of their older widebodies. InAvicom introduced the first audio player system, based on the Philips Tape Cassette technology.
As a result, this completely replaced the CRT technology. This is mainly due to the aircraft storage and weight limits.
The Boeing was the first narrow body aircraft to widely feature both audio and video In-flight entertainment and today it is rare to find a Boeing without an In-flight entertainment system.
Most Boeing s feature ceiling-mounted CRT screens, although some newer s may feature drop-down LCDs or audio-video on demand systems in the back of each seat. Some airlines, such as WestJetUnited Airlinesand Delta Air Lineshave equipped some narrow body aircraft with personal video screens at every seat.
For the introduction of personal TVs onboard jetBluecompany management tracked that lavatory queuing went far down. They originally had two planes, one with functioning IFE and one with none, the functioning one later was called "the happy plane".
With the sometimes miles of wiring involved, voltage leaks and arcing become a problem. This is of more than theoretical concern. To contain any possible issues, the in-flight entertainment system is typically isolated from the main systems of the aircraft.
In the United States, for a product to be considered safe and reliable, it must be certified by the FAA and pass all of the applicable requirements found in the Federal Aviation Regulations. The concerning section, or title, dealing with the aviation industry and the electronic systems embedded in the aircraft, is CFR title 14 part Contained inside Part 25 are rules relating to the aircraft's electronic system.
By separating the power supplies and data links from that of the aircraft's performance processor, in the event of a failure the system is self-sustained, and can not alter the functionality of the aircraft.
Upon a showing of compliance to all of the applicable U. Cost efficiency[ edit ] The companies involved are in a constant battle to cut costs of production, without cutting the system's quality and compatibility.
Cutting production costs may be achieved by anything from altering the housing for personal televisions, to reducing the amount of embedded software in the in-flight entertainment processor. Difficulties with cost are also present with the customers, or airlineslooking to purchase in-flight entertainment systems.
Most in-flight entertainment systems are purchased by existing airlines as an upgrade package to an existing fleet of aircraft.
Some airlines are passing the cost directly into the customers ticket price, while some are charging a user fee based on an individual customers use. Some are also attempting to get a majority of the cost paid for by advertisements on, around, and in their IFE. These airlines usually feature up to movies at once, whereas 20 years ago they would have only 10 or In the United States, airlines pay a flat fee every time the movie is watched by a passenger.
These restrictions account for expensive engineering of individually specific software. In-flight entertainment equipment is often touch screen sensitive, allowing interaction between each seat in the aircraft and the flight attendantswhich is wireless in some systems.
These additional requirements not only place an additional strain on the software engineersbut also on the price.In-flight entertainment (IFE) refers to the entertainment available to aircraft passengers during a monstermanfilm.com , the airship Hindenburg offered passengers a piano, lounge, dining room, smoking room, and bar during the 2 1/2 day flight between Europe and America.
After the Second World War, IFE was delivered in the form of food and drink services, . This article discusses the highlights of service-oriented modeling and architecture; the key activities that you need for the analysis and design required to build a Service-Oriented Architecture (SOA).
The author stresses the importance of addressing the techniques required for the identification, specification and realization of services, their flows and composition, as well as the. Software Requirements Specification Software Requirements Specification Date 2/20/ AM Page ii Document Control Approval The Guidance Team and the customer shall approve this document.
Writing Software Requirements Specifications For technical writers who haven’t had the experience of designing software requirements specifications (SRSs, also known as software functional specifications or system specifications) templates or even writing SRSs, they might assume that being given the opportunity to do so is either a reward .
Advanced options. Topic Area. [Note: The System Requirements Specification (SRS) captures the complete System requirements for the system, or a portion of the system. Following is a typical SRS outline for a project using only traditional.