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Showing papers by "Saab Automobile AB published in 1995"


Patent
13 Feb 1995
TL;DR: In this paper, a floating roof is used to collect the first microwave signal produced by a collector located above and in the vicinity of the floating roof, collecting the microwave signal producing a collected microwave signal.
Abstract: A device for gauging the level of a fluid in a container includes a floating roof, a transmitter for feeding a first microwave signal downwards in the direction of a fluid surface of the fluid, and a receiver for receiving a reflected microwave signal. The device includes a collector located above and in the vicinity of the floating roof, collecting the first microwave signal producing a collected microwave signal. The device also includes a vertical wave guide passing through the floating roof. The vertical wave guide guides the collected microwave signal to the fluid surface, and receives a reflected microwave signal reflected from the fluid surface. The vertical wave guide then guides the reflected microwave signal back to the collector and further to the receiver.

35 citations


Journal ArticleDOI
Per Lötstedt1
TL;DR: In this article, a model for computation of the time-averaged inviscid flow around airplane configurations with propellers is described, where the propeller is replaced by an actuator disk in the Euler equations.
Abstract: A model for computation of the time-averaged inviscid flow around airplane configurations with propellers is described. The propeller is replaced by an actuator disk in the Euler equations. The propeller forces are determined by a combined momentum-blade element theory. The computed results are compared to onedimensional theory, calculations with a panel method, and wind-tunnel experiments. The tested configurations include a full aircraft at subsonic speed. The influence of the grid resolution and numerical parameters is also investigated.

17 citations


Patent
06 Jul 1995
TL;DR: In this article, a cylindrical valve body with air intake at one end and an end wall extending laterally is used to direct the air to one aperture or another connected to the air jets.
Abstract: The device has two air distributors. Each consists of a casing (2) with cylindrical wall. The casing contains a cylindrical valve body with air intake at one end and an end wall extending laterally. The casing has an air intake (10) in one end, and an endface wall (8) extending across the other end, and has at least two air outputs (12, 14) in the side wall and another (16) in the end wall. By turning the valve body in the casing, one or more outlets can be wholly or partly covered, so that the air can be directed to one aperture or another connected to the air jets, to direct the air as required.

13 citations


Patent
Bovellan Kent1
07 Apr 1995
TL;DR: In this article, an arrangement for absorbing collision energy in a vehicle, preferably a passenger car, incorporating a framework and a forward portion with a wheel housing (24) on each side, is presented.
Abstract: An arrangement for absorbing collision energy in a vehicle, preferably a passenger car, incorporating a framework and a forward portion with a wheel housing (24) on each side. A first elongated force-transmitting device (2) with a first end portion (2a), a second end portion (2b) and an intermediate portion (2c) which is arranged between these latter. The first end portion (2a) is connected to the framework and the second end portion (2b)is connected to a bumper element at the forward end of the vehicle. The intermediate portion (2c) extends past the pertinent wheel housing (24). The second end portion (2b) is at the same time designed with a greater width than the intermediate portion (2c) and covers the greater part of the width of the vehicle wheel arranged in the wheel housing (24).

10 citations


Patent
12 Dec 1995
TL;DR: In this article, a plate spring element is incorporated with prestress in the arcuate space between an outer surface of a synchronizing ring and an inside surface of the ridged rim of the synchronizing hub.
Abstract: Arrangement for preventing rattling caused by a synchronizing ring [(36)] for an unengaged gear in a synchronized gearbox. When the gear is not engaged, its synchronizing ring is arranged for limited rotation relative to a hub arranged non-rotatably on a shaft [(6)] and relative to a synchronizing sleeve which is movable axially on that hub. Radially acting plate spring elements [(50)] are incorporated with prestress in the arcuate space [(45)] between an outer surface [(46)] of the synchronizing ring [(36)] and an inside surface [(48)] of the ridged rim [(34)] of the synchronizing hub. The plate spring elements [(50)] cooperate with the synchronizing ring [(36)] to hold the synchronizing ring in a position of suspension relative to the synchronizing hub [(10)] and thereby prevent it being rotated between its end positions and causing rattling.

5 citations



Journal ArticleDOI
TL;DR: A method for normalization of measured D* for SPRITE detectors to yield an equivalent-discrete D*, which allows a resolution-equivalent D* comparison of SPRite detectors with discrete-element detectors and facilitates such comparisons among SPRITE detector.
Abstract: It is desirable for design purposes to model a signal-processing-in-the-element (SPRITE) detector simply as a discrete-element detector with an integration-enhanced D*. We present a method for normalization of measured D* for SPRITE detectors to yield an equivalent-discrete D*. The multiplicative factor is the square root of the ratio of two noise-equivalent bandwidths: one is that of the SPRITE detector with no boost filter, and the other is that of the SPRITE detector with a boost filter that approximately compensates for carrier diffusion, yielding a spatial resolution that approaches that of a discrete detector the same size as the readout. This approach allows a resolution-equivalent D* comparison of SPRITE detectors with discrete-element detectors and facilitates such comparisons among SPRITE detectors. We find that, to obtain the D* of an equivalent-discrete detector, a measured SPRITE D* should typically be multiplied by a factor ranging from 0.85 to 0.57 for 8- to 12-μm SPRITE detectors and by a factor ranging from 0.50 to 0.23 for 3- to 5-μm SPRITE detectors.

1 citations


Patent
Andersson Kaj1
10 May 1995
TL;DR: In this article, a sensor which is intended to detect the rotational position of a device (e.g. a shaft or a rotatable hatch) was used to improve the accuracy within part of the relevant rotation range of the device.
Abstract: A sensor which is intended to detect the rotational position of a device (e.g. a shaft (21) or a rotatable hatch (20)) which is rotatable preferably by a motor (24) incorporates a position detector and a potentiometer (25). With a view to improving the latter's accuracy within part of the relevant rotation range of the device, a cam mechanism (2,5,8,30) is arranged between the potentiometer (25) and the rotatable device (20,21).

1 citations


Patent
Axelsson Sune1
04 Dec 1995
TL;DR: In this article, a proximity fuse for initiating detonation of the effective part of a robot, comprising a passive unit, comprising electronic components and circuits, is described, in particular characterized in that the proximity fuse is arranged to issue the third signal S3 in the case where the following conditions are simultaneously satisfied: a) the quotient Z of the amplitude A1 of the signal S1 and amplitude A2 of signal S2 exceeds a first value Z1 determined in advance, i.e. that Z = A1/A2 > Z1, and b) the
Abstract: A proximity fuse for initiating detonation of the effective part of a robot, comprising a passive unit is described. It includes a first antenna means (1) for receiving electromagnetic radiation within the microwave range, having a relatively narrow first antenna lobe, and a second antenna means (2) for receiving electromagnetic radiation within the microwave range, having a second, relatively broad antenna lobe, that encloses the first antenna lobe, the first and second antenna lobes preferably being rotationally symmetric in the roll direction of the robot. The proximity fuse comprises electronic components and circuits (3-8, 10, 11) for detecting a first signal S1 from the first antenna lobe and a second signal S2 from the second antenna lobe and a first means (9) for issuing a third signal S3 for initiating a detonation of said effective part. It is in particular characterized in that the proximity fuse is arranged to issue the third signal S3 in the case where the following conditions are simultaneously satisfied: a) the quotient Z of the amplitude A1 of the signal S1 and the amplitude A2 of the signal S2 exceeds a first value Z1 determined in advance, i.e. that Z = A1/A2 > Z1, and b) the time derivative dZ/dt exceeds a second value Z2 determined in advance, i.e. dZ/dt > Z2.

1 citations


Proceedings ArticleDOI
10 Jul 1995
TL;DR: In this article, the results from helicopter borne measurements using a multi-band frequency modulated radar profiler are presented Comparisons are made between the tree height profiling responses in three different frequency bands (5, 14 and 35 GHz).
Abstract: Results from helicopter borne measurements using a multi-band frequency modulated radar profiler are presented Comparisons are made between the tree height profiling responses in three different frequency bands (5, 14 and 35 GHz) The range response and its relationship to the foliage backscattering is modelled and volume related algorithms are discussed

1 citations