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An AFCS is an Automatic Fare Collection System - a system which helps to automate the ticketing system of a public transportation network.
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How many times in franchise history have the Broncos earned the AFCs No 1 seed?
3
Does an air data computer output to the transponder and autopilot system?
Question 23 of 30Number: 16447Question: The output data from the ADC are used by: 1- Transponder 2- EFIS 3- Automatic Flight Control System (AFCS) The combination that regroups all of the correct statements is: 1, 2.2, 3.1, 2, 3.1, 3.
Is there any teams that did not make the playoffs despite having better records?
Since the 2001 NFL season, when the NFL went to a 4 division per Conference format, there have been seven instances where teams with better records than division winners failed to qualify for the playoffs. This scenario can only happen when Division winners have a lower than "normal" record. The seven instances:2015 New York Jets 10-6 (2nd place in AFCE) did not qualify, Houston Texans 9-7 AFCS Division champion2014 Philadelphia Eagles 10-6 (2nd place in NFCE) did not qualify, Carolina Panthers 7-8-1 NFCS Division champion2013 Arizona Cardinals 10-6 (3rd place in NFCW) did not qualify, Green Bay Packers 8-7-1 NFCN Division champion2011 Tennessee Titans 9-7 (2nd place in AFCS) did not qualify, Denver Broncos 8-8 AFCW Division champion2010 New York Giants 10-6 (2nd place in NFCE) did not qualify, Seattle Seahawks 7-9 NFCW Division champion2010 Tampa Bay Buccaneers 10-6 (2nd place in NFCS) did not qualify, Seattle Seahawks 7-9 NFCW Division champion2008 New England Patriots 11-5 (2nd place in AFCE) did not qualify, San Diego Chargers 8-8 AFCW Division champion
How does the Chinook fly?
I will answer this in simple terms and not include the AFCS (Automatic Flight Control System) that is required to smooth out inherent problems with the tandem rotor design. The obvious starting point is the lack of Tail Rotor that conventional helicopters have. With two counter rotating rotor discs, each cancels out the torque of the other, and so no requirement of a tail rotor to keep the aircraft from spinning uncontrollably. The pilot inputs are the same (Cyclic Stick, Collective, Yaw Pedals) and produce the same movement of the aircraft but are translated to the rotor discs in a complicated way. Collective, or thrust as it can be known, is simple. The collective lever is pulled up and both rotor heads are fed with a mechanical linkage from the lever to pitch all blades to produce equal lift. Roll is simple too. As the cyclic stick is moved left or right, both rotor discs will tilt in the same direction to roll the aircraft to the desired side. Yaw is linked with Roll in the case of the Chinook, and as such both discs will tilt but in opposing directions. I.e. right pedal forward will cause the forward disc to tilt right, and the aft disc to tilt left, hence rotating the aircraft about the central vertical axis. It is possible to pivot the aircraft about either the forward or aft rotor heads by using a combination of pedal and left or right cyclic (but that requires a physics explanation) Pitch is the most different to a conventional helicopter. Moving the cyclic stick forwards or backwards does not cause the rotor heads to both tilt forward or backward as you might imagine. Pitch outputs are linked to the collective outputs, in which I mean one rotor disc has more collective pitch applied and the other has less. I.e. cyclic stick forward causes the forward rotor disc to decrease in collective pitch (therefore dropping the nose of the aircraft down) and the aft disc to increase in collective pitch (therefore lifting the tail up) which results in pitch up or down. That is the basic principle of Chinook flight theory. In more depth, it is necessary to say that although there is a sophisticated AFCS system, the aircraft can fly without it and does, and all flying controls are mechanically (hydraulically boosted) linked to the rotor heads. Because of the complicated way the pilots inputs must be output to the rotor heads, the channels (Pitch/Roll/Yaw/Collective) are mixed mechanically. So as Roll and Yaw both have a tilting effects on the rotor discs, they are mixed to give one common output channel; and Collective and Pitch share the same effect on the discs and so are also mixed to give one output channel. Further to all of this, a few facts about how the Chinook flies: Both engines have gearboxes that attach to a central Combining Transmission, which then feeds the engine torque forward and backwards to a Forward Transmission and Aft Transmission, which each spinning the heads above them. The Transmissions (or gearboxes) are linked therefore and in sync, so the counter-rotating blades inter twine each other and will never collide. A common misconception is that one engine powers one head and the second the other. Both engines drive a central transmission, and it is possible to fly on one engine (although with enough weight, the aircraft would lose altitude or alternatively the remaining engine overheat) Hydraulic pressure is provided by pumps driven by the forward and aft transmissions. Two flight hydrualic systems therefore. Again, it is possible that if one fails, the other will suffice. There is a third hydraulic system, the Utility Hydraulic system, which, should both Flight Hydraulic systems fail, can transfer its pressure into the Flight Hyd system. All pilot inputs are hydrualically boosted via these Flight Hyd systems. The Util Hyds system powers things such as the rear ramp, centre cargo hook opening and closing, power steering, steering locks, hoist and winch, and engine starter motors. The AFCS system allows for Pitch, Roll, and Yaw stability and eases the workload on the pilot to be constantly correcting aircraft attitude. It also allows for Height Hold (Radar Altimeter or Barometric Alitimeter), Heading Hold, Airspeed Hold, Controlled Turns, and more comlicated tasks such as levelling the fuselage during hover and forward flight, amongst other things. I could go into depth and on forever, but the basics are easy to grasp once you get to know them. Chinook Engineer.
How does an auto pilot work?
Autopilot or otherwise known as Automatic Flight Control System (AFCS) is an integrated system in most advanced airplanes. Autopilots can control from one to three axes of motion. They work by controlling the main control surfaces on a plane, ailerons which control roll along the longitudinal axis, rudder which control yaw along the vertical axis, and elevator which control pitch along the lateral axis. To operate the system, the pilot enters the information, such as altitude and heading, and the system compares this information with sensors on the airplane. If the autopilot senses a discrepancy between the pilot input and the sensors on the airplane, it sends a signal to the servo in charge of moving the control surface in order to correct this discrepancy. For example if the pilot enters into the autopilot an altitude of 10000ft, and the altimeter sensor detects that the altitude is 8000ft the autopilot will send a signal to the servo that controls the elevator, this signal will tell the servo to move the elevator up in order to increase the altitude. This motion of the elevator is the same as if the pilot had pulled back on the yoke to increase altitude.The most common autopilots control the following surfaces.Single axis autopilot - control the aileronsDual axis autopilot - control ailerons and elevatorThree axis autopilot - control ailerons, rudder, and elevator
