Abstract: An acoustic transducer (30), comprising: a support structure (36); an active assembly comprising a base plate (32) supported by the support structure (36) and a piezoelectric body (34) supported by the base plate (32); and a passive vibrator (38) supported by the support structure (36) and coupled via the support structure (36) to the active assembly (32, 34) so that vibration of the active assembly (32, 34) drives the passive vibrator (38). The active assembly (32, 34) and the passive vibrator (38) have the same resonant frequency.

Abstract: The invention relates generally to burn rate modifiers and propellants comprising a burn rate modifier. The invention also relates to methods of producing a propellant comprising a burn rate modifier as well as an ammunition cartridge comprising the propellant. The burn rate modifier comprises a compound of formula 1 and the propellant comprises a compound of formula 1 and an energetic material.

Abstract: The invention relates generally to burn rate modifiers, plasticizers and propellants comprising a burn rate modifier and/or a plasticizer. The invention also relates to methods of producing a propellant comprising a burn rate modifier and/or a plasticizer as well as an ammunition cartridge comprising the propellant. The burn rate modifier and/or plasticiser comprises a compound of formula (1) (Formula (1)) and the propellant comprises a compound of formula 1 and an energetic material.

Abstract: A portable electronic device (810) for controlling a training exercise executing on a simulator of an Air Traffic Control (ATC) system, a method of doing the same using a portable electronic device (810), and a computer program product are disclosed. The device (810) is capable of wirelessly communicating with the simulator (820, 830) also suitable adapted for wireless communications. The device (810) comprises a display, a memory for storing data and one or more computer programs, a user input mechanism, and a processor. The device (810) displays on the display information about a training exercise executing on the simulator and receives inputs to control the training exercise on the simulator. The displayed information and the received inputs are communicated between the simulator and the portable electronic device (810).

Abstract: A portable electronic device (1410) for controlling a simulated aircraft in a training exercise executing in an Air Traffic Control (ATC) system having a simulator, a method of doing the same using a portable electronic device (1410), and a computer program product are disclosed. The device is capable of wirelessly communicating with the simulator (1420, 1430) also suitable adapted for wireless communications. The device (1410) comprises a display (2014), a memory (2006) for storing data and one or more computer programs, a user input mechanism (2002, 2070, 2071), and a processor (2005). The device (1410) displays on the display information about an aircraft in a training exercise executing on the simulator and receives inputs to control the aircraft in the training exercise on the simulator. The displayed information and the received inputs are communicated between the simulator and the portable electronic device (1410).

Abstract: A bullet trap (1) is provided that connects to a muzzle end (5) of a weapon (3). The bullet trap (1) has a body (11) with a chamber (17) into which a bullet can be fired. The chamber (17) has a plurality of baffles (27) located one behind the other in an aligned series arrangement. The baffles (27) absorb kinetic energy of a fired bullet and enable the bullet to be trapped within the body (11). The baffles (27) have a thickness at a center of axis of travel of a bullet less than the thickness at a radially outwardly distant position to provide for a deformation at the center of a first of a series of baffles (27) before there will be engagement of a center of second and subsequent baffles (27).

Abstract: An aspect of the present invention provides a method for providing information to an air traffic controller. The method comprises the steps of: displaying, on a video display, a symbol representative of a position of an aircraft and a first stage of a multi-stage label comprising information relating to the aircraft (210); and displaying, on the video display, a second stage of the multi-stage label comprising additional information relating to the aircraft when a user-controlled cursor is brought into a vicinity of the multi-stage label (220). The first stage of the multi-stage label occupies a smaller footprint on the video display than the second stage. Additional stages of the multi stage label may also be displayed in response to user action (e.g. rotation of a scroll wheel of a computer mouse or other pointing device). Each stage of the multi-stage label may be locked in place, or pinned, through selection of part of the label, via a mouse click or similar action.

Abstract: A bullet trap (1) is provided that connects to a muzzle end (5) of a weapon (3). The bullet trap (1) has a body (11) with a chamber (17) into which a bullet can be fired. The chamber (17) has a plurality of baffles (27) located one behind the other in an aligned series arrangement. The baffles (27) absorb kinetic energy of a fired bullet and enable the bullet to be trapped within the body (11). The baffles (27) have a thickness at a centre of axis of travel of a bullet less than the thickness at a radially outwardly distant position to provide for a deformation at the centre of a first of a series of baffles (27) before there will be engagement of a centre of second and subsequent baffles (27).

Abstract: A method (400), a system and a computer program product are disclosed for graphically displaying air traffic control information in an air traffic control system. Information about objects in an air traffic control environment is compiled and calculated (410). Tokens (e.g., text, icons, images, or other symbols) corresponding to the objects in the air traffic control environment are displayed (420). At least two objects are selectively designated (430) in combination as a source object and a target object connected by a bearing and range line token (210, 220, 230, 240). Air traffic control information (212, 222, 232, 242) about the combination of objects associated with the bearing and range line token dependent upon the combination of objects designated in the combination is displayed (440). The displayed air traffic control information is required decision making information to enable an air traffic controller to manage air traffic.