Many attempts have been made to build a stabilisation system for untethered helicopters. Existing control aids designed for models are either just a supplementary x-y gyro system, or a circuit based on simple light or infra-red sensors, which only work if the horizon is absolutely level, and there are no visual obstructions. Until now it has only been possible to provide genuine autonomous control at great expense whilst incurring considerable compromises. The unavoidable fact is that inclination measurement with gravitation is impossible when we are dealing with a helicopter; with conventional systems at least one GPS system has to be included in the on-board equipment if geographical stability is required. If a normal helicopter is left alone for just a few seconds, it quickly drifts off in an arbitrary direction, accelerating continuously - which means, it would not survive for long.
The HeliCommand unit stabilises the helicopter's position as well as its attitude.
It incorporates a new form of ground sensing which works incomparably more accurately than a GPS system when at very low altitude, i.e. the helicopter's movements can be measured and corrected more finely. In contrast to GPS, the new process also works even when there are buildings or trees in the immediate vicinity, and in indoor locations - provided that the lighting conditions and contrast are adequate.
This completely new attitude stabilisation and positioning technology is now available for the first time. It was developed primarily for professional and industrial applications, but now includes a version specifically for modelling use. The system contains multiple control and measuring circuits which provide impressively reliable results.
Characteristics are not previously achieved quality of regulation, compact architecture and low weight, and all this for an affordable price.
AP-heli with HeliCommand PROFI