A relative localisation system of a mobile robot
This paper describes a localisation system applied to vehicle displacements on irregular grounds and at moderate speed (about 1 m/s). It is composed of a gyrometer and a Doppler sensor, which give, by integration, the attitude and position of the vehicle supporting them, without contact with the ground. The precision of the obtained localisation is about 2% for ranges of about a hundred meters.
Gyroscopes et gyromètres
1 Phenomenes gyroscopiques    1.1 Approximation gyroscopique    1.2 Derive gyroscopique    1.3 Couple gyroscopique    2 Gyroscopes 1 axe    2.1 Definition et structure    2.2 Modes de fonctionnement    2.21 Cas du gyrometre    2.22 Cas du gyrometre integrateur    2.23 Cas du gyroscope integrateur    3 Gyroscopes a deux degres de liberte    3.1 Definition et structure    3.2 Gyroscope a suspension accordee    4 Gyrometre a laser    5 Performances des gyroscopes et gyrometres    6 Exemples d'appareils    6.1 Gyrometre SFIM, GR-G5    6.2 Gyrometre SFENA, type J9 AM    6.3 Gyrometre integrateur SAGEM, type F    6.4 Gyroscope SAGEM S 040 a suspension dynamique accordee    Index bibliographique
Knocking in an Internal-Combustion Engine
The question remains open of the relation between the phenomena of knocking in the engine and the explosion wave. The solution of this problem is the object of this paper. The tests were conducted on an aircraft engine with a pyrex glass window in the cylinder head. Photographs were then taken of various combinations of fuels and conditions.