With the current on-board software, Chandra can conduct normal mission operations with any two of the four gyros.
A comparative analysis of three strategies, i.e., the optimal one (PMP), the proposed one (A-PMP) and the in-vehicle one (CD/CS), is conducted in simulation which shows that improvement above 20% in fuel consumption may be achieved when the proposed algorithm is used instead of the current on-board strategy.
The widespread availability of such actuators which are commonly driven by permanent magnet synchronous motors will, on the one hand, enhance an overall operating economy, yet on the other hand, it will post a newly generated challenge for the current on-board thermal control system since a large amount of waste heat will produce accompanied with the operation of these motors.
Re "Airplane Flight Recorders: The Boxes That Live to Tell the Tale" (March 9): Given advances in communication technology, why isn't the information recorded in flight data and voice recorders transmitted via satellite to a safe location that can both store more information than the current on-board devices and can give crash investigators quicker access to information?
One that really couldn't have existed in this form without the current on-board technology.
But new technology that lets drivers know what cars ahead are doing before they even come into view will augment current on-board sensors within just a few years.
How much time do the current directors spend on board and committee matters?
A rectifying antenna ("rectenna") on the bottom of the balloon converts waves into direct current for on-board use.
The volumetric flow of cooling air was in the range of 5 25 m3/h, that represents current aeronautics on-board conditions and projected values for the mid-term future.
SPIRIT (SPectroheliograph Ic soft X-Ray Imaging Telescope) is the current experiment on board theCORONAS-F satellite launched on July 31 , 2001(Oraevskii & Sobelman, 2002).
Each train's main receiver automatically switches to the best signal in terms of speed, cost to the operator and current use on board.
