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Topic: Variometer


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In the News (Mon 21 Dec 09)

  
  ELECTRIC VARIOMETER
The B400 (Also called B400AV) is designed to replace the well known B40 variometer and like the B40 is aimed at replacing the old technology mechanical variometers in the instrument panel of cross country and competition sailplanes as well as providing a good variometer with audio and averager for club and training sailplanes.
The displays are supplied with 0.5 m cables with plugs which plug in to matching sockets on the rear of the B400 AV.
The B400 uses surface mount technology in the electronics and the variometer display is by a small stepper motor driven pointer plus several high brightness LEDs.
www.wingsandwheels.com /page16.htm   (634 words)

  
  Variometer-Tasman Instruments Australia
With the 20 second Variometer average continuously displayed and a warning signal for the battery voltage all on the screen, no other controls are required.
This gives the maximum amount of Variometer information to the pilot at times when a Variometer is most important i.e., when trying to recover in weak lift, or to extend a flight on winter days or during wave flights.
Installation of the Variometer is simple with only a TE probe connection required with the "T" piece and wiring cable supplied.
www.tasmaninstruments.com.au /vario.htm   (806 words)

  
 Build a Ten Gallon Loading Coil Variometer for MF/LF
The trade-off to this wide range of adjustability is that there is a slight loss in coil Q and an increase in the loss resistance of the coil because of the taps and the changing form factor as the coil taps selected.
This view shows the manner in which one end of the variometer coil winding is fed through a hole drilled in the wall of the coil form and connected to one of the two flexible wires leading through the shaft.
Feed the variometer coil wires through hole in the bucket wall on the opposite side of the bucket from the coil taps.
w5jgv.com /variometer/variometer.htm   (1542 words)

  
  Flight theory-variometer
A variometer is a fast response vertical speed indicator usually scaled to match typical glider rates of climb and descent (+/-10 knots or +/- 5 metres per second).
The basic variometer described above suffers from the effect that as the glider changes airspeed in response to pilot inputs, large transient rates of climb and descent are induced until the airspeed is stabilised at a new value.
If, instead of sensing the outside air pressure or static pressure with the variometer, we connect the variometer to a venturi of the correct dimensions we find that as long as the airspeed is constant the pressure in the venturi decreases and increases as in the basic variometer case.
www.auf.asn.au /groundschool/variometer.html   (1878 words)

  
  NationMaster - Encyclopedia: Variometer   (Site not responding. Last check: )
A variometer (also known as a rate-of-climb indicator, a vertical speed indicator (VSI), or a vertical velocity indicator (VVI)) is an instrument in an aircraft used to inform the pilot of the rate of descent or climb.
When the variometer is showing a climb, the tone is often chopped, while during a descent the tone is not chopped and the rate of chopping may be increased as the climb rate increases.
A variometer (also known as a rate-of-climb indicator, a vertical speed indicator (VSI), or a vertical velocity indicator (VVI)) is an instrument in an aircraft used to inform the pilot of the instantaneous rate of descent or climb.
www.nationmaster.com /encyclopedia/Variometer   (1892 words)

  
 Variometer
In gliders in Germany, where SI units are used, variometers disply in meters per second (m/s).
Variometers are vitally important in the sport of gliding, because human perception has no sense of climb and sink rates.
In modern gliders, electronic variometers generate a sound depending on the instrument reading, improving flight safety by being something that can be called a heads-up display.
www.ebroadcast.com.au /lookup/encyclopedia/va/Variometer.html   (207 words)

  
 The Electric Variometer System
During the zoom maneuver with an uncompensated variometer, the pilot suffers from an information "fl out." It is impossible for him to tell whether he is in lift or sink while the air speed is changing.
The popularity of the electric variometer is due first of all to its rapid response, and second to the fact that it will drive an audio attachment.
When tuning a variometer system with response in the one half to two second range, it is helpful to put heat sink material in the thermos.
www.betsybyars.com /guy/soaring_symposia/69-vario.html   (2151 words)

  
 Variometer
Der Druck in diesem Gefäß und der damit verbundenen Kammer des Variometers wird über eine Kapillare mit Verzögerung an den statischen Außen-Druck angeglichen, während der Druck des Volumens 2 über der Membran ohne Verzögerung dem statischen Außendruck folgt (pneumatisches Differenzieren).
Solche Variometer können zusätzlich auch noch eine Höheninformation zur Verfügung stellen.
Das Variometer zusammen mit der Höheninformation, der Fahrtinformation und einer genauen Positionsbestimmung ermöglicht viele zusätzliche Funktionen, wie das Bestimmen der Streckengeschwindigkeit oder das Berechnen der erwarteten Ankunftshöhe (Endanflugrechner).
www.weblexikon.de /Variometer.html   (1019 words)

  
 Winter Bordgeräte - variometers
Vane type variometer measure the change in air pressure inherent to changes in altitude.
The instrument consists of a cylindrical chamber with a precision-fit baffle (vane) rotating on shockproof jewel bearings and centered by a coil spring.
The resultant defection of the vane provides a measure of the vertical speed and this deflections is transferred to the pointer of the instrument.
www.winter-instruments.de /english/produkte/variometer.html   (228 words)

  
 Variometer TAS-V1000, Audio Variometer, LCD display with speaker.
With the 20 second Variometer average continuously displayed and a warning signal for the battery voltage all on the screen, no other controls are required.
This gives the maximum amount of Variometer information to the pilot at times when a Variometer is most important i.e., when trying to recover in weak lift, or to extend a flight on winter days or during wave flights.
Installation of the Variometer is simple with only a TE probe connection required with the "T" piece and wiring cable supplied.
www.grn.es /condor/vario.htm   (662 words)

  
 Variometer - Definition, explanation
This is done using a pitot tube directed towards the front of the sailplane, at the entrance of the variometer.
The influence of changing aircraft velocity is eliminated, and in effect the total energy variometer is an instrument that describes the vertical motion of the air through which the glider is flying.
Very few powered aircraft have total energy variometers, so it is common for novice power pilots to "chase the needle", trying to establish a steady rate of descent or climb, or simply staying at zero.
www.calsky.com /lexikon/en/txt/v/va/variometer.php   (989 words)

  
 The Variometer System: Part II
The next important thing borne out by this figure is that the thermal type variometers are essentially mass rate of flow instruments and their sensitivity drops about 10 percent for each 3000 feet of altitude increase.
Figure 2 is a plot of response needed if the variometer system had a reference capacity of 525 cc and were being tuned for 4000 feet msl.
In Figure 5, the variometer system is on the right and the sailplane is shown on the left.
www.betsybyars.com /guy/soaring_symposia/70-vario.html   (3337 words)

  
 A motor drive unit for your variometer
While adjusting the variometer, I monitor the antenna current with my home-brew remote RF ammeter (that's a topic for another article.) I just press the buttons and "Tune for Max!" The feedback potentiometer provides a metering voltage proportional to the position of the variometer.
The variometer shaft is attached to the large white wheel seen in the middle of the side of the ATU cabinet.
The variometer drive shaft is a length of 1/2" ID fl PVC pipe that is commonly used for lawn irrigation.
www.w5jgv.com /atu_motor_drive/atu_motor_drive.htm   (939 words)

  
 [No title]   (Site not responding. Last check: )
A variometer only contributes a small percentage of the total loading inductance necessary to tune the antenna.
The variometer is a inductor which has an outer fixed winding and an inner section that can be rotated.
With this variometer the range is 250 to 400µH. Construction.
www.g0mrf.freeserve.co.uk /variometer.htm   (337 words)

  
 Instructions
Many variometers are damaged by Manually sucking or blowing into the ports of the variometer By far, the greatest risk period occurs between the time the variometer is received until after it is installed.
When using the Sage variometer with a total energy probe, place one or more of the enclosed pneumatic restrictors in series between the static port on the variometer (marked "S", see #10) and the total energy probe.
One of the most important things for proper performance of a variometer is to ensure that there are no leaks in the system by this I mean the line to the total energy probe and the line to the capacity must not leak.
www.sagevariometers.com /sageinst.htm   (1151 words)

  
 Crystal Sets: Building
Fig 1 shows a simple variometer crystal set which gives good results up to 20 miles from a broadcasting station with the ordinary single or twin wire outdoor aerial.
In the large majority of cases, and owing to natural ease of construction, the inner inductance is capable of rotation inside the larger one, which is stationary.
Two more holes are required in the stator to hold the complete variometer in position, and are drilled in line from each edge at a distance of 3 3/4 in.
www.vintageradio.info /vario-xtal.html   (1219 words)

  
 Eastern Sailplane | Cambridge 300 Series
Variometer, CPU Module, Altimeter, Audio and Speed-to-Fly (same as 301) + GPS Receiver and Flight Recorder mounted on the CPU PC board (complete system would also include a controller such as the CAI Model 303 LCD Controller or the CAI Model 304 Pocket-NAV).
Since Wil Schuemann's research in the early 1970s, all varios have used either 1.25 or 1.5 second averaging of all signals to obtain a "quiet needle" in the vario.
Variometer and Graphic Display repeaters for two seat gliders will also be available.
www.easternsailplane.com /cambridge/cam300.html   (1229 words)

  
 Borgelt B400 AV and B500 VE variometer systems 16/6/2005
Borgelt B400AV and B500 VE variometer systems consist of several components designed to be compatible and offers the customer the ability to construct a variometer system to his or her  requirements ranging from a simple variometer with audio and averager to a complete GPS linked variometer engine to drive almost any glide computer of choice.
B400 AV The B400 AV is designed to replace the well known B40 variometer and like the B40 is aimed at replacing the old technology mechanical variometers in the instrument panel of cross country and competition sailplanes as well as providing a good variometer with audio and averager  for club and training sailplanes.
Borgelt B400/500 system allows selection of the optimum variometer system for any sailplane and is backed by our 28 year record in the design and manufacture of electronic variometer systems.
www.borgeltinstruments.com /B400advert.html   (515 words)

  
 G503.com Message Forums :: View topic - WS No. 19 Parts Needed
The variometer seating plate is a metal piece with holes in a vertical row down the center.
When mounted on the top of the power supply, or an auxillary tray, the variometer sat on a wooden or hard rubber base which screwed into the tapped holes in the bottom of the variometer, and then the base was screwed onto the power supply from inside.
It has a row of holes in the center to allow mounting the variometer forward or back, and the four outer holes are used to mount it from underneath.
www.g503.com /forums/viewtopic.php?t=75359   (1124 words)

  
 electronic variometer - Marko Rocznik
electronic variometer: Developing and building a electronic variometer is a very interesting task - especially for a glider pilot who studies electronics.
Based on the experience with the altimeter I developed a electronic variometer, which is described on this page.
To develop a reliable, robust and really good working variometer needs a lot of effort to spend, much more, than to work and buy one for money (except you are a shoe shop assistant ;-).
www.rocznik.de /Marko/electronic/project/vario/vario_engll.htm   (0 words)

  
 variometer crystal set spiderweb coil
This is because of the simplicity of the design where the antenna and the variometer coils form the tuned circuit.
A variometer is a device that uses two coils to provide a continuously variable inductance.
If you have built the variometer crystal set you will have found that the change in inductance is not enough to tune across the whole of the medium wave broadcast band.
www.crystalradio.net /crystalsets/hassell/index.shtml   (1710 words)

  
 Variometer - Physik-Lexikon   (Site not responding. Last check: )
Die als Variometer bezeichneten veränderlichen Induktivitäten sind unter Spule (Elektrotechnik) beschrieben.
Diese Änderung wird von einem Variometer gemessen und angezeigt.
Variometer werden in Segelflugzeugen also - anders als oben beschrieben - an den Düsendruck angeschlossen.
www.physik-lexikon.de /wiki/index.php?title=Variometer   (802 words)

  
 Paragliding Variometer - Paraglider Varios, Altimeters and GPS Systems for foot-launched personal flight.
Paragliding Variometer - Paraglider Varios, Altimeters and GPS Systems for foot-launched personal flight.
The sound these little instruments make causes air to rise and the pilot can now circle in lift for thousands of feet until they reach down and switch the vario off.
Altimeters can be integrated into the vario, or a seperate altitude instrument is available as a watch or windmeter.
flyaboveall.com /vario.htm   (0 words)

  
 Variometer
Es gibt neben den analogen Variometern auch elektronische Variometer, die das Steigen und Sinken sowohl optisch als auch akustisch angeben und so eine Erleichterung beim Thermikfliegen sind, da man nicht ständig auf das Variometer schauen muss, wenn man in einer Thermikblase aufsteigt.
Das Variometer besitzt wie der Fahrtmesser zwei Anschlüsse, neben dem für den statischen Druck (Druck der Umgebungsluft) führt der zweite in ein Ausgleichsgefäß.
Kompensierte Variometer zeigen nur dann Steigen an, wenn das Segelflugzeug ohne Längsneigungsänderung an Höhe gewinnt.
www.segelflug.de /vereine/halver/variometer.htm   (193 words)

  
 Variometer - Selbstgebaut
Zunächst jedoch erst einmal eine kleine Einleitung - etwas über den Begriff "Variometer".
Ein mit einem Variometer ausgestatteter Empfänger erfreut sich bei Bastler und Amateuren, die mit einfachsten Mitteln größte Reichweiten erzielen wollen, eine besondere Beliebtheit.
Die beiden Spulenkörper dieses Variometers sind aber etwas komplizierter in der Herstellung - der Erfolg hinterher macht den höheren Aufwand aber wieder mehr als wett.
www.jogis-roehrenbude.de /Variometer.htm   (2277 words)

  
 Winter Bordgeräte - Variometer
Stauscheiben - Variometer messen die Luftdruckänderung, die mit Flughöhen- wechseln verbunden sind.
Der Aufbau besteht aus einer zylindrischen Kammer mit einer präzise eingepassten drehbaren Stauscheibe, die auf Lochsteinen stossgesichert gelagert ist und durch eine Spiralfeder in Mittelstellung gehalten wird.
Je schneller ein Variometer anzeigt, desto kleiner ist seine Zeitkonstante.
www.winter-instruments.de /deutsch/produkte/variometer.html   (199 words)

  
 Curacao, Nederlandse Antillen: variometer links   (Site not responding. Last check: )
Variometer 80mm 5 StV 5 +/- 6 m/sec: Deze Variometer is in elk vliegtuig een zeer waardevolle hulp, omdat deze meter de thermische verhoudingen goed benut.
De variometer is een instrument dat aangeeft of je stijgen of dalen hebt met je zweef-vliegtuig.
Wat is de invloed van een gedeeltelijk verstopte pitotbuis op de aanwijzing van de hoogtemeter, snelheidsmeter en T.A. variometer met compensatiedoos?
www.curacaomall.com /variometer.html   (160 words)

  
 Nationalencyklopedins Internettjänst, NE.se - Sök artikel
variome´ter, mätdon som används inom geofysiken för att registrera förändringar i tid eller rum av fysikaliska fält. Läs mer...
variome´ter, flyginstrument som visar ett flygplans stig- eller sjunkhastighet.
Utöka din sökning till artiklar där variometer nämns i NE (fritextsökning).
www.ne.se /jsp/search/search.jsp?t_word=variometer   (106 words)

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