Embraer S.a.

Embraer - Empresa Brasileira De Aeronautica S.a.

Dagfinn Gangsaas

Fabricio Reis Caldeira

Marcos Vinicius Campos

Reneu Luiz Andrioli, Jr

Emerson Freitas

Jose Marcio Vieira Dias Filho

Marco Tulio Sguerra Vita

Alvaro Vito Polati De Souza

Lauro Rocha Borges

Marco Antonio De Oliveira Alves Junior

Alvaro Vitor Polati De Souza

Roberto Garcia Negrao

Bianca Prazim Trotta

Fabiano Prieto Silva

Mauricio Martins De Almeida Filho

Marco Antonio Coccolin

Karina Sanches Garcia

Daniel Carmona De Campos

Cristina Minioli Saracho

Fernando Jose De Oliveira Moreira

Eduardo Da Saiva Martins

Eduardo Da Silva Martins

Lucas Rubiano

Daniel Siqueira

Eduardo Camelier

Wagner De Oliveira Carvalho

Marco Paulo Fonseca

Luciano Tury Pastorini

Jerome Klein

Erick Vile Grinits

Marco Túlio Seguerra Vita

Reneu Luiz Andrioli Junior

ÁLvara Vitos Polati De Souza

Fabrício Reis Caldeira

José Márcio Vieira Dias Filho

Alvara Vitos Polati De Souza

A flight control system commands drag devices such as flight spoilers according to pilot or autopilot longitudinal command. Furthermore, the flight control system monitors a set of flight parameters to determine whether the aircraft is operating inside the permitted safe envelope, hence, incorporating envelope automatic exceeding disengagement. This invention allows the aircraft to descend in a steeper glide path than the 3&#xb0; used in the normal approach, while keeping speeds unchanged.

Flight control system

A longitudinal control law is designed to optimize the flying qualities when aircraft is set to approach configuration, i.e. when the flap lever is set to the landing position and landing gears are locked down. Under such circumstances, the effort of trimming the aircraft speed can be extremely reduced by the usage of a momentary on-off switch or other control in the sidestick, instead of or in addition to a conventional trim up-down switch, making easier the task of airspeed selection by the pilot. This control law provides excellent handling qualities during approach and landing, with the benefit of not needing or using radio altimeter information in safety-critical applications.

Flight control system mode and method providing aircraft speed control through the usage of momentary on-off control

A flight control system moves elevators according to a pilot command summed with an automatic command. The flight control system monitors a set of flight parameters to determine if the flight vehicle is operating inside a permitted envelope. The flight controls system incorporates automatic protections thru the automatic elevator command if the flight vehicle is close to its envelope limits. The exemplary illustrative non-limiting implementation herein provides automatic protections in order to protect the flight vehicle from low speeds, high attitude, stalls and buffetings.

Stall, buffeting, low speed and high attitude protection system

The Tail Load Monitoring System detects faulty low frequency (e.g. those in the range from 0.1 to 1 Hz) oscillatory conditions caused by Flight Control System malfunctions while the aircraft is in air by means of a continuous assessment of the estimated tail load behavior and data processing. Both estimation and data processing activities are provided by a dedicated architecture featuring a tail load estimation module, a band-pass filter and three independent paths that continuously monitor nuisance fault detection events avoidance, catastrophic events avoidance (addressing a limit load criterion), and structural damage avoidance (addressing fatigue life criteria).

Low-frequency flight control system oscillatory faults prevention via horizontal and vertical tail load monitors

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Mindens, NV, United States of America

Dagfinn Gangsaas