ipl-logo

Gust Alleviation System

2271 Words10 Pages

Introduction
This report presents the development, implementation and assessment of gust load alleviation (GLA) systems on aircraft to improve their aerodynamic performance and safety. Aircraft are inevitably affected by gust during flight, which disturbs the regular operations of pilots and worsens the ride quality. In more serious cases, the flight mission cannot be completed as the aerodynamic fidelity and flying qualities may be disserved. In particular emphasis is placed on applications of active control technologies that can allow weight reduction in aircraft by mitigating the effects of atmospheric disturbances. Gusts or atmospheric disturbances do considerably affect aerodynamic performance and airworthiness of an aircraft. Also, active …show more content…

However it was Airbus, not Boeing who first used gust alleviation systems on their aircraft. The Airbus A320 aircraft (introduced in 1987), famous for being the first civilian plane to feature fly-by-wire flight control system originally featured a Load Alleviation Function (LAF). The LAF functionality also provides a 1.3-percent increase in maximum takeoff weight. The Airbus A330 aircraft (introduced in 1994) and the Airbus A340 aircraft (introduced in 1993) incorporated maneuver load alleviation systems as well as a flying quality enhancement system known as Comfort in Turbulence, or CIT. The objective of the CIT system is to increase the fuselage damping response (at 2.0 to 4.0 Hz) by actively controlling the rudder and elevators. Very heavy planes such as A380 and 747-8 already have some inherent gust damping due to their considerable weight. The Airbus A380 aircraft (introduced in 2007), the largest civilian aircraft, also features a form of GLA system [1]. The Boeing 787 aircraft (introduced in 2011) uses a Honeywell-supplied flight control system enables the 787's three-axis fly-by-wire, using the aircraft's ailerons for manoeuvre load alleviation and elevator for active gust load alleviation. The 787's wing also adapts to changing gross weight conditions, optimising the camber of the wing through the trailing edge variable camber (TEVC) system moving it up or down by 1.5e_SDgr from its neutral position

Show More
Related
703 Words | 3 Pages

In chapter three of “No Promises in the Wind” the train stopped in a town late in the afternoon. The bulls (as called in the book) are the men who are sent to get the free riders off of the train, but after the accident the bulls were nowhere to be seen. Everyone on the trains were able to get off on their own accord, because there were no bulls around. In the town’s depot no one paid any attention to them. Joey’s face was red and swollen because of all the crying he had done.

Read More
1939 Words | 8 Pages

Here at the University of Florida, the field of wind engineering is a subject to which a lot of research and manpower is dedicated, particularly concerning hurricanes and the large wind loads associated with them. These powerful storms are generally associated with the eastern and gulf coasts of North America, but they can and do form elsewhere. Hawaii, surrounded by the cold waters of the Pacific Ocean, is not typically associated with hurricane activity, but in September of 1992 the island state was struck by Hurricane Iniki. Within a lifespan of a little more than a week, Iniki was able to completely change the relationship Hawaii had with Hurricanes by battering the islands with strong winds and exposing the complacency fostered by years of mild hurricane seasons. In the years to come, this storm was to serve as the basis for Hawaii’s push to better prepare for potential storms and avoid another disaster of this magnitude.

Read More
452 Words | 2 Pages

Planes faced some advancements, the breakthrough happening with the interrupter mechanism, however, they didn’t advance much apart from the mounting of

Read More
145 Words | 1 Pages

On July 20th 2005, tragedy struck which changed author Kimberley William’s life for years to come. Her son, Caleb Williams, went down to the Snoqualmie River and plummeted nearly 20 feet from a rope swing to the rocks below which caused a traumatic brain injury. The months following the accident tested the patience and faith of the family as Caleb lay in a comatose state. Although he lay in this state of unconsciousness for months, the family relied on God who continuously displayed his omnipotence in the healing process. When tragedy strike, believers need to persevere and continue relying on God, even when it feels like the whole world is caving in.

Read More
789 Words | 4 Pages

Although many of the first aircraft produced were not very safe, many significant improvements were made in the coming years reaffirming the belief in the effectiveness of the

Read More
260 Words | 2 Pages

The novel, The Boy Who Harnessed The Wind, by William Kamkwamba and Bryan Mealer, beautifully illustrates that humans must continually adapt and repurpose in order to survive. The theme of adaptation is most evident in the windmill that William created. William got the idea to build a windmill from a picture he saw on the cover of the textbook, Using Energy. But William did not have the specific materials, money or resources to build it.

Read More
942 Words | 4 Pages

Some of the new improvements included, replacing all the metal additions that were in fighter planes with fabric and other lightweight

Read More
612 Words | 3 Pages

There damage is usually just some roof shingles peeled back and some cars pushed off the road. F2 is known as a significant tornadoes, the wind speeds are up to 113-157 miles per hour. The F2 damage is roofs torn from houses and large trees snapped off. F3 is called a severe tornados and the wind speeds are 158-206 miles per hour. There damage is roofs and some walls torn from buildings, heavy trucks lifted from the ground.

Read More
205 Words | 1 Pages

Isaiah Stoute Shield From the Storm The author puts the reader in the vicarious position of a child confronted with the ideals of empathy, morals, and innocence. The author uses imagery to show how empathetic the boys felt toward the birds. The boy said “shh” as he removed his jacket that was so harsh and cold on the outside, but was warm and dry on the inside, and placed it on the birds.

Read More
930 Words | 4 Pages

For quarter one, I went on a virtual field trip to the Sterling Weather Center. I experienced reading about how the forecasters forecast weather and the vast amount of tools they use. I read about what all the tools did and why it was important to use all the different tools. I also discovered what was so important and special about all of the weather tools. There are 122 field offices that are used to collect data for the weather.

Read More
341 Words | 2 Pages

The design of the aircraft gave better manoeuvrability.

Read More
703 Words | 3 Pages

As I have stated, the airplane was one of the biggest changes in the Roaring

Read More
1238 Words | 5 Pages

The aim of this paper is to explain the accident of American Airlines Flight 587, an Airbus Industrie A300-605R, registration N14053 aircraft which crashed into a residential area of Belle Harbor, New York. The aircraft’s vertical stabilizer and rudder were separated during the flight. The safety issues discussed in this paper focus on characteristics of the A300-600 rudder control system design, A300-600 rudder pedal inputs at high airspeeds, aircraft-pilot coupling, flight operations at or below an airplane’s design maneuvering speed, and upset recovery training programs. Introduction:

Read More
763 Words | 4 Pages

The Wright Brothers really changed the course of aerodynamics and it wouldn 't be the the same without

Read More
980 Words | 4 Pages

With the development of the jet engine; the design of aircraft wings was changed as well. Wings were given a more “swept” design in order to reduce the overall drag of the aircraft. Drag is the force that counteracts the thrust component of aircraft flight. This new wing design was also more structurally sound. This allowed for the variations of pressure on

Read More

More about Gust Alleviation System

Related Topics

Open Document