DE488992C - Venturi nozzle for determining the speed of an air flow, especially for aeronautical purposes - Google Patents

Venturi nozzle for determining the speed of an air flow, especially for aeronautical purposes

Info

Publication number
DE488992C
DE488992C DED49903D DED0049903D DE488992C DE 488992 C DE488992 C DE 488992C DE D49903 D DED49903 D DE D49903D DE D0049903 D DED0049903 D DE D0049903D DE 488992 C DE488992 C DE 488992C
Authority
DE
Germany
Prior art keywords
nozzle
speed
air flow
determining
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DED49903D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Versuchsanstalt fuer Luftfahrt eV
Original Assignee
Deutsche Versuchsanstalt fuer Luftfahrt eV
Publication date
Priority to DED49903D priority Critical patent/DE488992C/en
Application granted granted Critical
Publication of DE488992C publication Critical patent/DE488992C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Description

Venturidüse zur Bestimmung der Geschwindigkeit einer Luftströmung, insbesondere für aeronautische Zwecke Die Erfindung betrifft die zur Bestimmung der Geschwindigkeit eines Luftfahrzeuges oder einer Luftströmung überhaupt benutzte Venturidüse. Es ist hierbei vorgeschlagen worden, das an die Einschnürungsstelle der Düse angeschlossene Diflerenzdruckgeriät auch an eine DruckaufnahmeöfInung im Eingang der Düse anzuschließen. Hierbei. wird aber der statische Druck nicht ganz fehlerfrei aufgenommen: Gemäß der vorliegenden Erfindung wird daher die Düse mit einem beispielsweise stromlinienförmigen Mantel umkleidet, so daß es möglich wird, auf diesem Mantel in einer bei, Staudruckmeßgeräten bereits bekannten Weise (vgl. z. B. die österreichische Patentschrift 88 o8a) .eine Stelle zu ermitteln, die eine möglichst ungestörte Abnahme des statischen Druckes ermöglicht.Venturi nozzle for determining the speed of an air flow, in particular for aeronautical purposes The invention relates to the determination the speed of an aircraft or an air flow at all Venturi nozzle. It has been suggested that this be applied to the constriction point The diflerential pressure device connected to the nozzle is also connected to a pressure receiving opening in the To connect the inlet of the nozzle. Here. but the static pressure is not quite Incorrectly recorded: According to the present invention, the nozzle is therefore with wrapped in a streamlined jacket, for example, so that it is possible on this jacket in a manner already known from dynamic pressure gauges (cf. z. B. the Austrian patent specification 88 o8a). To determine a place that a allows the static pressure to be reduced as undisturbed as possible.

Der Gegenstand der Erfindung ist auf der Zeichnung beispielsweise dargestellt.The object of the invention is on the drawing, for example shown.

Die Düse i ist mit dem Mantel z umkleidet, der der Stromlinienform angepaßt ist. An dem nach der Luftaustrittsseite der Düse zu liegenden Teil dieses Mantels, der hier einen Kegel mit etwa 15' Neigung bildet, wird versuchsweise die Stelle dies möglichst ungestörten statischen Druckes ermittelt und mit den Druckaufnahmeäffnungen 3 versehen. Die durch den Mantel, die Zwischenwand 4 und die Außenseite der Düse i gebildete Kammer 6 ist der Drucksammelraum für den statischen Druck, während die danebenliegende Kammer 5 durch die öffnungen 7 den Druck an der Düseneinschnürungsötelle aufnimmt. Die Kammem, 5 und 6 sind durch die Leitungen 8 und 9 mit dem auf die Anzeige der Geschwindigkeit geeichten Differenzdrucl2neßgeriät. in sonst bekannter - Weise verbunden. Außerdem kann die Leitung 8 an Höhenmesser, Variometer usw. angeschlossen sein.The nozzle i is covered with the jacket z, which is of the streamlined shape is adapted. On the part of the nozzle that is located after the air outlet side of the nozzle Mantels, which here forms a cone with an inclination of about 15 ', is tentatively the Make this determined as possible undisturbed static pressure and with the pressure receiving openings 3 provided. Those through the jacket, the partition 4 and the outside of the nozzle i formed chamber 6 is the pressure collecting space for the static pressure, while the adjacent chamber 5 through the openings 7 the pressure at the nozzle constriction point records. The chambers, 5 and 6 are through the lines 8 and 9 with the on the display differential pressure device calibrated to the speed. in an otherwise known way tied together. In addition, the line 8 can be connected to an altimeter, variometer, etc. be.

Claims (1)

PATENTANSPRÜCHE: i. Venturidüse zur Bestimmung der Geschwin 'drgkeit einer .Luftströmung, insbesondere für aeronautische Zwecke, mit zwei Anschlußleitungen ziz Übermittlung des Druckes an das Meßgerät, dadurch gekennzeichnet, daß die Düse (i) mit einem Mantel (a) umkleidet ist, der vorzugsweise nach Arteines Stromhnienkörpers ausgebildet ist und an dem Öffnungen (3) zur Abnahme des statischen Druckes in an sich sonst bekannter Weise an einer versuchsweise zu bestimmenden Stelle so angeordnet sind, daß. der statieche Druck möglichst ungestört übertragen. wird. z. Düse nach Anspruch i, dadurch gekennzeichnet, daß, der Zwischenraum zwischen Mantel (z) -und Düse (3) durch eine Zwischenwand (4) in zwei Kammern (5 und 6) unterteilt ist, von denen die eine (5) in sonst bekannter Weise als Rin,gsammelraum für den dynamischen Druck und die andere (6) als Ringsa.mmelraum für den statischen Druck dient.PATENT CLAIMS: i. Venturi nozzle for determining the speed an air flow, especially for aeronautical purposes, with two connecting lines ziz transmission of the pressure to the measuring device, characterized in that the nozzle (i) is covered with a jacket (a), which is preferably in the manner of a streamliner body is formed and at the openings (3) for decreasing the static pressure in on otherwise known way arranged at a point to be determined on an experimental basis are that. the static pressure is transmitted as undisturbed as possible. will. z. Nozzle after Claim i, characterized in that the space between the jacket (z) and The nozzle (3) is divided into two chambers (5 and 6) by a partition (4) which the one (5) in otherwise known way as Rin, gsammelraum for the dynamic Pressure and the other (6) serves as a ring space for the static pressure.
DED49903D Venturi nozzle for determining the speed of an air flow, especially for aeronautical purposes Expired DE488992C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED49903D DE488992C (en) Venturi nozzle for determining the speed of an air flow, especially for aeronautical purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED49903D DE488992C (en) Venturi nozzle for determining the speed of an air flow, especially for aeronautical purposes

Publications (1)

Publication Number Publication Date
DE488992C true DE488992C (en) 1930-01-11

Family

ID=7052246

Family Applications (1)

Application Number Title Priority Date Filing Date
DED49903D Expired DE488992C (en) Venturi nozzle for determining the speed of an air flow, especially for aeronautical purposes

Country Status (1)

Country Link
DE (1) DE488992C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592176A (en) * 1946-02-19 1952-04-08 Orlin William James Apparatus for indicating air speed in terms of the local speed of sound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592176A (en) * 1946-02-19 1952-04-08 Orlin William James Apparatus for indicating air speed in terms of the local speed of sound

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