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At BALLS 27 the Marsa Tilt gadget (Marsa Gyro1) will be flight tested. Assuming no major issues this will be available as add on option for Marsa54L, 54LHD and 33LHD altimeters
The Gyro1 uses two 3-axis gyros so that optimum rotation rate resolution can be obtained for the spin axis which can happen at high rates and the yaw and pitch axes which happen at a very low rate. In addition the tilt gadget has a 100K barometric sensor to backup and extend the range of the native barometric sensor on the main board of the altimeter.
The Gyro1 uses an ARM processor running at 48mHz so that the processing of the rotation mathematics is dedicated on the gadget and not burdening the altimeter processor.
(Click photo to enlarge)
The Gyro1 is connected to the expansion header of the Marsa altimeter. Once connected the Marsa firmware recognizes and configures itself for tilt-aware processing and event options.
Programming of tilt-aware events is done on the Marsa altimeter user interface. For any channel which is programmed at a motor timer tilt criteria can be added to the logic of that channel event firing.
The first line sets the maximum allowable tilt angle for the timer channel to fire.
For flight profiles where a coast down to a target speed is desired, this maximum speed can be set as shown on line 3 of the display. Two options can be applied to this speed criteria.
The "Try" option will delay firing the channel until the speed drops below the target speed OR the maximum tilt angle is reached, whichever happens first.
The "Require" option requires the target speed to be reached before the channel fires. If at that time the tilt angle exceeds the allowable value then no event will occur.
Finally the "Ignore" option ignores the speed criteria for the event and the event will fire at the specified timer delay as long as the angle criteria is satisfied.
The goal with this product as with all Marsa products is to make tilt event programming as easy, straightforward and reliable as possible.
More to come, stay tuned.
The Gyro1 uses two 3-axis gyros so that optimum rotation rate resolution can be obtained for the spin axis which can happen at high rates and the yaw and pitch axes which happen at a very low rate. In addition the tilt gadget has a 100K barometric sensor to backup and extend the range of the native barometric sensor on the main board of the altimeter.
The Gyro1 uses an ARM processor running at 48mHz so that the processing of the rotation mathematics is dedicated on the gadget and not burdening the altimeter processor.
(Click photo to enlarge)
The Gyro1 is connected to the expansion header of the Marsa altimeter. Once connected the Marsa firmware recognizes and configures itself for tilt-aware processing and event options.
Programming of tilt-aware events is done on the Marsa altimeter user interface. For any channel which is programmed at a motor timer tilt criteria can be added to the logic of that channel event firing.
The first line sets the maximum allowable tilt angle for the timer channel to fire.
For flight profiles where a coast down to a target speed is desired, this maximum speed can be set as shown on line 3 of the display. Two options can be applied to this speed criteria.
The "Try" option will delay firing the channel until the speed drops below the target speed OR the maximum tilt angle is reached, whichever happens first.
The "Require" option requires the target speed to be reached before the channel fires. If at that time the tilt angle exceeds the allowable value then no event will occur.
Finally the "Ignore" option ignores the speed criteria for the event and the event will fire at the specified timer delay as long as the angle criteria is satisfied.
The goal with this product as with all Marsa products is to make tilt event programming as easy, straightforward and reliable as possible.
More to come, stay tuned.
