Enichem Synthesis S.p.a

Agip Petroli

Leonardo Corporation

Fabio Monti

Carlo Neri

Luigi Cassar

Nereo Nodari

Fausto Alberici

Paolo Brughera

Pierre Abdel Nour

Philip Eaton

A display device for displaying the attitude of an aircraft with respect to a fixed direction in space is described, said device comprising: a first element that can be fastened to the aircraft; and a second element, which is free to move with respect to the first element, following a change in position of first element with respect to the fixed direction; the second element in turn comprising: a mass, which is designed to return the second element to the same stable position with respect to the fixed direction when the first element changes its position with respect to the fixed direction; and a visual indication, which is representative of the position of the fixed direction, as the position of the first element changes.

Aircraft comprising a display device for the attitude of an aircraft with respect to a fixed direction in space

A high-energy-content fuel composition, for controlled-ignition internal combustion engines, contains quadricyclane (tetracyclo-[2.2.1.0-(2,6).0-3,5]-heptane), for which a new synthesis method is proposed. The use of the quadricyclane-containing fuel composition makes it possible a larger amount of energy to be available per each fuel volume unit, and favorably modifies the combustion kinetics in controlled-ignition internal combustion engines.

High-energy-content fuel composition containing quadricyclane

A fuel composition with a high energy content, for direct-ignition internal combustion engines contains a gasoline from petroleum and an amount of up to 90% by volume, as referred to the same fuel composition, of hydrocarbon 'cubane' or of its alkyl-derivatives, to be defined by means of the formula: ##STR1## wherein R' and R' represent, independently from each other, a hydrogen atom or an alkyl radical containing from 1 to 3 carbon atoms.

Fuel composition with a high energy content

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Rome, Italy

Fabio Monti