SF02 Laser Rangefinder Flight tests:
I recently purchased three of the SP02 Laser Rangefinders from Laserman, and have fitted one to one of our SurVoyeur mk-II planes. I had intended to fly earlier this week, but was beset with PC hard disc failures so spent a few unpleasant day resurrecting PC's...
Anyway, back on line and we flew today with excellent results.
The rangefinder was fitted in a housing and mounted in the internal bay of the aircraft, with the lenses looking out the fuselage underside. Here are some pictures:
Rangefinder lenses from under fuselage
Rangefinder connected to autopilot
Rangefinder fitted internal to Fuselage
Fuselage under view with rangefinder lenses and ultrasound ranger visible.
The Plot below shows the SF02 rangefinder plotted against Baro Alt ( as a function of height above ground) and the Ultrasound rangefinder)
IMU-Height is Baro_height above ground
LRF Height is the SF02 height , active from 30 meters AGL only.
Ultrasound is the Ultrasound sensor height AGL, active from 6 meters AGL only
The SF02 performs very well. The terrain was soft desert sand, with patches of very coarse gravel, interspersed with desert brush and bushes.
At the price , this is a brilliant piece of equipment, and cannot be beat!
We are working at replacing the Ultrasound sensor with the SF02, which will allow vastly improved autoland, completely eliminating any destabilization due to errors and differences in baro-alt and actual height above ground when starting the landing flare.
Thank You Laserman!