Helicopter gyro how does it work
Do not unplug or plug your gyro in with aircraft power on. Not affected on air driven gyros Allow the aircraft to come to a complete stop and sit for at least 15 minutes before attempting to remove the gyro. This gives it time to completely spool down and stop spinning.
The newer and more efficient the unit, the longer the gyro will spin. For vacuum gyros, always keep system and gyro filters clean.
Don't plumb gyros in series, as this tends to reduce vacuum pressure to the units. Do not lubricate fittings on vacuum gyros. This will contaminate the gyro. Teflon tape is recommended. If gyros are in storage or are not used for periods up to six months, they need to be powered up and operated for 30 minutes and allow the gyro to rotate on all axes and the bearings to be exercised and lubricated.
Anytime a gyro is removed from the aircraft, it should be immediately put into an adequately padded shipping container. Store the gyro flat on a shelf, resting on padding, in a temperature-controlled environment. Learn More About Flight Instruments Be on the lookout for false readings from your directional gyro by performing cross checks of other instruments to see if the readings make sense, and service the gyro regularly.
The material not only can make sound but also sense it. So it is used in both speakers and microphones. Two of the piezo elements on the crystal are set to sense vibration and the third one is setup to vibrate. When the helicopter is not rotating the vibration traveling through the crystal hits the other two piezo elements at the same time.
When the helicopter is rotating one sensor will have a stronger signal then the other. It is a very efficient design and has a lot finer degree of resolution then the mechanical type. In addition power consumption is greatly reduced as there is no spinning motor to power. What is the difference between heading hold hh and standard rate non-hh. In non-hh mode the gyro just dampens unwanted movements of the tail. To keep things simple lets say you are hovering and a constant wind hits the helicopter from the side, the gyro will keep the helicopter from suddenly swinging nose into the wind, but the helicopter will eventually drift nose into the wind.
All the gyro does is to prevent any jerk type reaction. In hh mode the gyro will keep the nose pointed in the same place until you tell it to move. You can fly sideways with the rudder stick in the center and the nose will remain pointed in the same direction. If you have not used heading hold before then you will notice in fast forward flight that when you make a turn, the tail will not follow the helicopter, you have to give some rudder in your turns.
Another thing is that you'll notice the rudder stick feels different. In heading hold, the amount you move the rudder stick from center tells the gyro how many degrees per second that you want the helicopter to rotate. The gyro moves the rudder servo however much it needs to obtain the requested rotation rate. With a standard rate gyro if you did a slow pirouette one rotation with the wind then to keep the helicopter spinning at the same rate you would have to move the rudder stick more as the tail is going upwind and less as the tail goes downwind.
Gyros are also used for fixed-wing models and have a tremendous stabilizing effect on whatever flight axis they are installed on. They do not just add comfort or security for less-experienced pilots, but also make the model fly with incredible stability, making even the behaviour of small models believably lifelike.
Heading-lock is usually not employed for this type of gyro. It should be noted that not every gyro is compatible with every receiver or servo. High-performance gyros like the GY are only to be operated together with the included S digital Servo.
The GY can be used with regular servos, but has to be switched to the appropriate operating mode to prevent the high-frequency control signals from damaging the servo. Not every digital servo can deal with this rapid succession of control input, while some analog servos actually can. Thus, extra care should be taken before enabling the "digital output" mode on a modern gyro. If your gain is set too high, the tail will hunt wag before it stabilizes.
Simply land and turn down your gain setting, either on the gyro or in the gyro programing screen on your RC radio. After you set your high speed gain, set the low speed gain setting at a lower head speed hover if you have a dual gain gyro. The instructions for both the helicopter and gyro should have starting point recommendations as well — use them first and adjust if required.
Installation of a RC helicopter Gyro is very simple in most cases but there are a few important points that I should mention. Most gyros are mounted with two sided adhesive foam tape. This is supplied with the gyro and is very important not only to secure the gyro, but also allows it to function correctly. In the old days with mechanical RC helicopter gyros, foam tape was used to dampen vibrations that could damage the gyro itself.
It's very important you follow the mounting instructions that came with your gyro as to how much foam tape to use in order to eliminate erroneous gyro tail rotor commands. If you are flying nitro RC helicopters, over time, this foam tape will usually get saturated with oil and the adhesion will fail. To keep this from happening, here's a tip I use. After you stick the RC helicopter gyro on the mounting plate with the double sided foam tape, spread a thin film of silicone caulking around the base of the gyro and the mounting platform it is secured to.
The thin film of caulk acts as a gasket to keep the oil from getting to the mounting tape. Remember, a thin coat only. If you goop it on heavy, the vibration isolation qualities of the foam tape will be diminished.
It would also be very difficult to remove the gyro when servicing your heli if it is glued down with silicone. Most manufacturers recommend the gyro has to be placed a minimum distance from the electric motor to avoid the strong magnetic fields produced by high power electric motors that would cause erroneous gyro operation. This distance is usually about 5cm or more, but follow the instructions that come with your gyro when in doubt.
Any good electric RC heli manufacturer knows this, and will have the gyro mounting plate set far enough away from the motor so it won't be an issue. You Might Like These :. My RC Helicopter eBooks are here to help you with those exact problems. Click Here For More Information.