FlySight is not your mother’s GPS.
FlySight was designed from the ground up for wingsuit pilots and does one truly revolutionary thing…
FlySight provides real-time audible indication of glide ratio, horizontal or vertical speed.
If you’ve used other GPS receivers, you know the drill. When you land, you review data from the jump. If you’re lucky, or if you’ve planned a very simple jump, you might remember what you were doing when your glide ratio maxed out. On the next jump, you try to do it again.
FlySight speeds the learning process.
When you change your body position, you instantly hear a change in the tone. Your brain easily connects this feedback with your precise body position, making it astonishingly easy to remember what worked and what didn’t.
Features
General
- u-blox 7 chipset
- 10 Hz update and logging
- Real-time audible feedback
GPS Performance
- Hot start:
- 1 s
- Warm start:
- 28 s
- Cold start:
- 28 s
GPS Accuracy
- Position:
- 2.5 m (autonomous)
- 2.0 m (SBAS)
- Velocity:
- 0.1 m/s
Storage
- 512 MB microSD card included
- One million seconds of logged data at 5 Hz
- Data and configuration accessed via USB flash drive
Battery
- Built-in rechargeable lithium-polymer battery
- Charging time: 1.5 hours
- Operating time: 2.5 to 3.5 hours
Output
- 3.5 mm stereo headphone jack
- Requires a pair of stereo earphones (not included)
Dimensions
- Width:
- 50 mm (2.0 inches)
- Height:
- 50 mm (2.0 inches)
- Depth:
- 15 mm (0.6 inches)
- Weight:
- less than 50 g
Package Contents
- FlySight GPS receiver
- 512 MB microSD card installed
- Mini USB data/charging cable
Logged Data
FlySight handles the dynamics of freefall exceptionally well. FlySight can be turned on a few minutes before exit, and begins providing audible feedback immediately after exit.
Here, we discuss a sample data set from a jump using the Prodigy 2 (not the same jump as the video above). The log file itself can be downloaded here:
For this flight, there was a moderate wind from the west. The flight line went west about 1.25 km, then north 0.75 km, then 2 km east.
On the right, you can see a plot of glide ratio for this flight. To determine glide ratio, FlySight uses velocities provided directly by the u-blox receiver. For real-time feedback, this is enormously superior to a method based on differences in position, because the receiver’s velocities are accurate to 0.1 m/s.
As expected, the glide ratio going west is slightly worse than on the return flight, because of the wind. One of the remarkable things about FlySight’s real-time feedback is that the precise value of the glide ratio is not important. What is most clearly perceived is the change in glide ratio due to changes in body position.
To the left is a plot showing glide ratio compared with vertical speed.
Low vertical speed sometimes indicates high glide ratio, but you can see from this plot that the two are not quite the same. For example, early in the jump, vertical speed climbs while glide ratio levels out.
Although it is not completely clear in this data set, there are hints that minimizing vertical speed will not necessarily maximize glide ratio. In future jumps, we hope to record data which explores this relationship further—for example, by demonstrating increasing glide ratio with increasing vertical speed.
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