Abstract: The field-of-view is line-scanned transverse to movement of a vehicle such as an aircraft and the line scan signal is transmitted to a ground station in which a frame is assembled on a line for line basis with updating by each new scanning line to obtain a running picture to be displayed and imaging passage of the vehicle over the field-of-view. Additional information may be juxtaposed and superimposed. The scanning-display path may be part of a loop linked through an operator observing the display and manipulating remote control for the vehicle.

Abstract: The flap covering or opening a secondary air intake in an aircraft engine is linked to a shock attenuator so that movements of the flap near the closing position are strongly attenuated while movement about the fully open position is very little attenuated.

Abstract: Two aircraft jet engines are associated respectively with two sub-systems each comprised of a gas turbine for starting one of the engines and driving a set of secondary power generators such as hydraulic pump and electric generator and an air conditioning unit. The two sub-systems are drivingly cross-linked so that either gas turbine can drive both sets. The air conditioning units as well as the gas turbines receive tapped air from the engine compressors, whereby the gas turbines may run with or without combustion. An emergency power pack may be provided, preferably in selective driving connection to one of the sub-systems to provide for the possibility of starting a gas turbine and driving, if necessary, the power generators of that sub-systems or furnishing hydraulic and electric power on a emergency basis when all sub-systems have failed.

Abstract: The roll gap is feedback controlled in that the actual gap is detected, compared with a reference for formation of an error signal which in turn controls the relative position of the rolls. That feedback system is supplemented by augmenting the error by a signal that is directly proportional to the time derivative of the rolling force and of the stock width and inversely proportional to the force itself.