Abstract:
The present invention relates to a method and a device by means of which it has been made possible, without gas discharge to the surrounding environment, to accelerate the speed of a powder-gas-driven projectile from zero to a speed which gives the projectile free-flying characteristics. According to the invention, this has been made possible by utilizing at least some of the expansion force from the propellant powder charge, which discharges gas when it is initiated, for, by a displaceable piston, driving a countermass out of the rear part of the projectile in the direction opposite to the desired flying direction of the projectile.
Abstract:
A weapon effect simulation system including a fire simulation system and at least one hit simulation system. The fire simulation system includes a transmitter for transmitting electromagnetic waves to simulate real ammunition from a weapon and elements for including information in the electromagnetic waves. The hit simulation system includes both a receiver for receiving the transmitted electromagnetic waves and a processor for determining, based on received electromagnetic waves, whether a target has been hit. The fire simulation system further includes a calculator for calculating the imagined trajectory of the simulated ammunition and a processor for determining the geographical position of the weapon, and wherein the elements for including information in the electromagnetic waves are arranged so as to include information related to coordinates in the three-dimensional space for the calculated ammunition trajectory.
Abstract:
A breathing mask with a display device can comprise means for providing gas and removing exhaled air from the mask, a visor which permits viewing of the external environment with an adjustment mechanism allowing adjustment of an optics unit with display arranged in the inside of the visor, means for fitting the mask on a wearer, an infrared camera, and an electronic unit with power supply.
Abstract:
Method for manufacturing an elongate stiffening element (12) and a rigid shell structure (10) integrated with at least one elongate stiffening element (12). The method includes the steps of providing a preformed, form-stable reinforcement member (16), which has a hat profile with two inwardly directed, opposing flange portions (20), covering the reinforcement member with a curable composite material to form an external hat profile having outwardly directed flanges (26), and integrating this assembly with either a curable or preformed shell structure (10) of composite material.
Abstract:
A method for planning the velocity of a craft along a predetermined route, where said method comprises the step of transforming demands and limitations of said route and said craft into a time-distance domain. Said planning subsequently takes place in said domain. The method saves computational time.
Abstract:
The present invention relates to a method for the manufacture of a composite article comprising a composite plate (1) and at least one fitting (4). The method is characterized by the steps of arranging at least one former on said composite plate (1), arranging at least one fitting (4) on said composite plate (1), producing a lay-up by applying a composite material layer (9) least partly covering an external surface of the former and of the fitting, and curing the layup in a curing process. After curing, said composite material layer (9) forms the walls of a stiffener and at least partly encloses the fitting so as to support it in a predetermined position.
Abstract:
A method and a system for avoiding collisions between aircrafts. The method comprises: computing a default fly out maneuver regarding how the aircraft shall be maneuvered during a fly out action, predicting a fly away path comprising a prediction of the position of the aircraft during the fly out maneuver, sending information about the own fly away path to the other aircrafts, receiving information about fly away paths from the other aircrafts, detecting an approaching collision, and activating the fly out maneuver upon detecting an approaching collision. The method further comprises carrying out the following steps after activation the fly out maneuver: receiving the current position of the aircraft, and calculating a compensated fly out maneuver for the aircraft based on the current position of the aircraft, said previously predicted position, and the default fly out maneuver.
Abstract:
The present invention relates to terrain navigation wherein an earth-reflected satellite signal is received from at least one reference signal source whose position is known (120), for example a navigation satellite. Based on information contained in the received signal a measured estimate of a shortest reflection distance (d1(tb)) to the satellite (120) is derived. A relative spatial movement (Δx, Δy, Δh) of a relevant craft (110) since a previous positioning instance (ta) is registered onboard the craft (110). Moreover, stored surface information is retrieved pertaining to an elevation (h1b) of the earth surface (130) in relation to the mean sea level (z0) at at least one geographical position (X1b, Y1b). Based on the relative spatial movement (Δx, Δy, Δh) and the retrieved surface information at least one calculated estimate of the shortest reflection distance (d1(tb)) to the satellite (120) is derived. Finally, a geographical position (X1a, Y1a, h1a) is determined on basis of the measured and calculated estimates of the shortest reflection distance (d1(tb)). Thus, a highly reliable and entirely passive positioning may be accomplished on basis of external signals from as few satellites (120) as one.
Abstract translation:地形导航技术领域本发明涉及地形导航,其中从其位置已知(120),例如导航卫星的至少一个参考信号源接收地球反射的卫星信号。 基于包含在接收信号中的信息,导出对卫星(120)的最短反射距离(d 1 SUB(t B b B))的测量估计。 由于先前的定位实例(t> a SUB>)之后的相关工艺(110)的相对空间运动(Deltax,Deltay,Deltah)被登记在船上(110)上。 此外,至少与平均海平面(z> 0 S>)相关的地表面(130)的高度(h1B1)有关的存储表面信息被检索到 一个地理位置(X 1b 1b,Y 1b 1b)。 基于相对空间运动(Deltax,Deltay,Deltah)和所检索的表面信息,至少一个计算出的最短反射距离的估计(d 1 SUB(t B))) 导出到卫星(120)。 最后,基于最短反射的测量和计算的估计来确定地理位置(X 1a,Y 1a,h 1a 1a) 距离(d 1)(t B b))。 因此,可以基于来自少量卫星(120)的外部信号来实现高可靠性和完全被动定位。
Abstract:
An active part of an ammunition device. A casing is provided with a sleeve in association with an opening of the casing. A sprung device is arranged between a locking device arranged at the opening of the casing and the sleeve. The end of the sleeve facing away from the sprung device contacts an explosive charge arranged inside the casing of the active part or a liner arranged on the surface of the explosive charge which faces towards the sleeve and the locking device. The locking device is designed to be released from the casing by the action of a force. The active part keeps the active part intact even if materials in the active part have greatly varying coefficients of thermal expansion, while at the same time, in extreme temperatures, the active part is prevented from detonating by the locking device being released from the casing.
Abstract:
A device for bracing a shell surface in an aircraft fuselage against deformations and consisting of a continuous profile that is arranged so as, after conformation, to be mounted against the shell surface. Notches are spaced at regular distances apart from each other in at least a portion of the profile. The notches extend through a base surface in the profile, and through an intermediate part perpendicular to the base surface. The notches are delimited upwardly by an upper surface that is not encompassed by the notches.