Abstract: A retractable chair for an aircraft cabin which is connected in use to a wall of the cabin, and includes an articulated frame having a back and a seat; a support which is connected to the frame, and fitted such as to be mobile on the wall around an axis of rotation; and at least one covering stretched on the frame. The fact of pivoting the support relative to the wall makes it possible to be able to incline the back, which contributes towards improving the comfort of the chair.

Abstract: A retractable chair for an aircraft cabin which is connected in use to a wall of the cabin, and includes an articulated frame having a back and a seat; a support which is connected to the frame, and fitted such as to be mobile on the wall around an axis of rotation; and at least one covering stretched on the frame. The fact of pivoting the support relative to the wall makes it possible to be able to incline the back, which contributes towards improving the comfort of the chair.

Abstract: An aircraft frame structure including a grid support (such as a geodetic support) (2) and (i) an impact-resistant barrier (6) including a shear thickening fluid, and (ii) a water-resistant, elastically-deformable cover (4). Methods to make and repair an aircraft using the aircraft frame structure.

Abstract: A method and apparatus for testing materials for testing materials using infrared spectrometry. Calibration of an infrared spectrometer for use in testing materials including the steps of: selecting variables which have the potential to influence the physical characteristics of a composite used in the aerospace industry, selecting values for each variable and inputting the variable and values into a design of experiments model, thereby obtaining a sample test matrix.

Abstract: An apparatus and method for testing material to determine if the materials have exceeding their useable life based an analysis of the chemical degradation of the material. An infrared (IR) spectroscopic measurement is made of the material. The measurement results are compared to a database of previously obtained measurement results. Depending on the comparison of the measurement result to the database of previously obtained measurement results, an indication of a measure of the lifespan of the chemically reactive material is determined and provided.

Abstract: A method and apparatus for testing materials for testing materials using infrared spectrometry. Calibration of an infrared spectrometer for use in testing materials including the steps of: selecting variables which have the potential to influence the physical characteristics of a composite used in the aerospace industry, selecting values for each variable and inputting the variable and values into a design of experiments model, thereby obtaining a sample test matrix.