Shornstein at 10:29, 29 July 2020

2020-07-29T10:29:42Z

← Older revision		Revision as of 10:29, 29 July 2020
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	= ~~Measuring pitch without pitch gauge~~=		=Messen des Pitchwinkels ohne Pitchlehre=
	~~If your helicopter is too small for attaching a digital pitch gauge or simply in case you haven't got one you can use a little trick to measure the pitch anyway~~. ~~You can calculate the angle from the distance the rotor blades move from zero position. Actually this is not as accurate as measuring the pitch with a digital pitch gauge~~, ~~but it's better than nothing~~. ~~All you need for this is a ruler and and a good eye~~. ~~First you need to know the length of the rotorblades from the bolt hole to the outer edge~~. ~~Usually this matches the specified rotor blade length of the manufacturer~~. ~~Then you align the rotorhead with the longitudinal axis of the helicopter and fold both rotorblades to one side~~ (~~as this will put heavy load on the servos it is not recommended use this method on large helicopters with heavy blades~~!). ~~Now hold your ruler to the blades and mark the zero position~~. ~~Then when you add positive or negative pitch you can measure the distance between the outer edge of one blade to the other~~. ~~This distance can be transfered into degrees of blade pitch using the mathematical formula of sinus~~. ~~Or the other way round you can calculate how far you rotorblades must move away from each other in order to get a specific blade pitch~~.<br />		Wenn Dein Helikopter zu klein ist, um eine Pitchlehre daran zu befestigen oder Du schlicht und einfach keine Pitchlehre hast, dann kannst Du den Winkel auch mit einem Lineal oder Massband ermitteln. Das ist zwar aufgrund der Ungenauigkeit der Messung nicht so zuverlässig, wie eine digitale Pitchlehre, aber immerhin besser wie Nichts. Alles was Du dazu brauchst ist ein Massband und ein gutes Auge. Zuerst ermittelst Du die Rotorblattlänge von der Bohrung in der Blattwurzel bis zur Aussenkante. Das entspricht im Normalfall auch der Rotorblattlänge die vom Hersteller angegeben ist. Dann richtest Du den Rotorkopf in einer Linie zur Flugrichtung des Helis aus und klappst die Rotorblätter zur Seite (da dadurch die Servos stark belastet werden, empfehlen wir diese Methode ausdrücklich nicht bei größeren Helis mit schweren Rotorblättern!). Lege jetzt das Massband an der Aussenkante der Rotorblätter an und messe die Distanz bis zum Boden bzw. makiere Dir diesen Nullpunkt. Wenn Du jetzt Pitch auf oder ab steuerst, wandern die Rotorblätter auseinander. Mit Hilfe der Sinusberechnung kann aus der Distanz der Rotorblätter zueinander der Pitchwinkel ermittelt werden. Oder anders herum kannst Du mit der gegeben Blattlänge berechnen, wie weit die Rotorblätter entfernt sein müssen, damit Du ein bestimmter Pitchwinkel anliegt.<br />
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FuzzyBot: Importing a new version from external source

2020-07-29T10:24:55Z

Importing a new version from external source

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= Measuring pitch without pitch gauge=
If your helicopter is too small for attaching a digital pitch gauge or simply in case you haven't got one you can use a little trick to measure the pitch anyway. You can calculate the angle from the distance the rotor blades move from zero position. Actually this is not as accurate as measuring the pitch with a digital pitch gauge, but it's better than nothing. All you need for this is a ruler and and a good eye. First you need to know the length of the rotorblades from the bolt hole to the outer edge. Usually this matches the specified rotor blade length of the manufacturer. Then you align the rotorhead with the longitudinal axis of the helicopter and fold both rotorblades to one side (as this will put heavy load on the servos it is not recommended use this method on large helicopters with heavy blades!). Now hold your ruler to the blades and mark the zero position. Then when you add positive or negative pitch you can measure the distance between the outer edge of one blade to the other. This distance can be transfered into degrees of blade pitch using the mathematical formula of sinus. Or the other way round you can calculate how far you rotorblades must move away from each other in order to get a specific blade pitch.<br />
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Translations:Manuals:MBPlusFblV5:Setupmenu K/7/en - Revision history

Shornstein at 10:29, 29 July 2020

FuzzyBot: Importing a new version from external source