DA 15 is a rotary actuation product that converts a control command into controlled angular movement. It drives a connected mechanism through its output shaft, linking the control system with the mechanical load in the installation.
DA 15 is a compact rotary actuator from Volz Servos, a brushless servo that turns a control command into controlled angular movement of an output shaft. The page used here describes the DA 15-N-HT version, which is built on the DA 15-N and adds a further gear stage for a higher gear ratio and more torque. The housing is 15 mm wide.
The DA 15-N-HT is offered in three supply options. The 6 V version has a rated current of 0.45 A and a peak current of 0.85 A, the 12 V version 0.3 A and 0.6 A, and the 28 V version 0.15 A and 0.3 A. All versions give a rated torque of 0.6 Nm and a peak torque of 1.5 Nm. The 6 V and 12 V versions have a no-load speed of 60 degrees per second and a rated speed of 45 degrees per second, and the 28 V version 70 and 55 degrees per second. The overall supply range of the series is 5 V to 32 V, so the actuator can run from the low-voltage buses of small aircraft up to 28 V systems.
The actuator uses a brushless DC motor and a contactless, wear-free position sensor, which supports long service life under vibration and avoids the electrical noise of brushed motors. Position, temperature and current feedback are standard, and the unit is fully programmable. One programmable function is overload protection, which reduces motor current if the motor is overloaded.
The conductive aluminium case and shielded cable keep susceptibility to EMI and RFI noise low. The housing is coated with a saltwater-resistant HART-coat that withstands at least 100 hours of saltwater spray and meets the IP67 standard for water and dust protection.
Interface options are PWM, RS-485, CAN and single-ended serial. Options include a travel angle extended up to 340 degrees, a position feedback device and customised cases. STEP files and a datasheet are available, and Volz provides a MATLAB Simulink model on request.
Typical applications are control surfaces, flaps, valves and other light mechanisms on uncrewed aircraft and advanced air mobility platforms, which are the markets Volz lists for its actuators.
Volz Servos' depth-rated actuators move the control surfaces of Boaty McBoatface, the Autosub Long Range AUV run by the UK's National Oceanography Centre (NOC) in Southampton. The vehicle surveys beneath ice shelves near the Thwaites…
Thales selects Volz Servos to provide certifiable actuators for its UAS100 long-range drone, a platform on the path to becoming the first EASA-certified UAS. The servos are to meet EASA and FAA requirements at design assurance level B…
Volz Servos supplies the swashplate actuation for High Eye's Airboxer unmanned helicopter, using five DA 15-N-ISS servos in a redundant layout. The arrangement keeps the helicopter controllable even if two actuators fail.
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