Description : The present invention allows users to open and join a chat by means of a simple procedure from a video game machine, the present invention includes creating an opening message for opening an electronic conference and creating an opening request signal for setting an area in a database, based on the opening message. Also included is transmitting the opening request signal to the database and creating an invitation message prompting particular users to join the electronic conference, based on the opening message. Finally, the present invention further includes transmitting the invitation signal to the particular users.
Technology Used : Java ,Swing
Concepts : Networking
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This article is presented by:
Sridharmurthy.
H.N, v r rajesh
VIII semester Mechanical Engg
DBITPRESENT STATE AND FUTURE OF MAGNESIUM APPLICATION IN AEROSPACE INDUSTRY
INTRODUCTION
-Weight reduction has always been an important objective for aerospace industry
-Aluminium is a traditional light metal for airborne structures
-The alloys used for today’s aerospace application
are already optimized and weight reduction has
become a more difficult task
-Some of the alternatives may be laminates such as glare or fiber reinforced plastics
-The application of non metallic materials is limited owing to limited properties
-Magnesium as it is well known is one of the lightest structural material available on the Earth
-The family of Magnesium and Magnesium wrought materials could be an excellent alternative because of their low density, rather good mechanical properties and metallic behavior
AEROSPACE BACKGROUND OF MAGNESIUM
-Historically Magnesium has been used in aircrafts since the thirties and hit a high in the fifties
-Most of the civil and military aircrafts built in the period used lots of Magnesium
-TU-95MS: 1550 kg of magnesium
PRESENT SITUATION OF MAGNESIUM APPLICATION IN AEROSPACE INDUSTRY
-The amount of Magnesium in the former soviet union aircraft reduced in the beginning of 1990s from hundreds to dozens of kgs per plane
-In the western aerospace industry Magnesium has not been used yet by major manufacturers like Boeing and Airbus
-Situation is different in the helicopter industry where Magnesium is used in cast gearboxes and other non structural elements