The first and original designers of control loading and motion simulation since 1981. If you are tired of settling for the rest, come back to the best!

High Force, Low Fidelity,
Electric Control Loader

Model 300-X

Servos & Simulation is pleased to announce a new control loader. This new loader fills the gap between the Model 400 high end loader and springs. There is nothing else like it in the industry. This control loader is aimed at low cost simulators which previously could not have control loaders because of cost. Servos & Simulation will provide complete loaders and flight control models.  We are willing to license customers to manufacture the loader. Contact Bruce Baker at bbaker@servos.com or at 407-262-9042 for details. Click here for Product sheet in Adobe Acrobat Reader.

Key Benefits:

  • All ELECTRIC, Fully Digital Actuation
  • Clean, Quiet Operation
  • Low Maintenance Cost

Control Loader Specifications:

This control loader uses AC gear motors which have a small amount of backlash, some friction and inertia reflected to the flight controls. This loader is not suitable for FAA Level A, B, C, or D.  It is primarily designed for FAA Level 1 through 5. 

This design provides the following forces which are typical of a transport aircraft.  Other peak forces can be designed and as the peak force is reduced, the friction is reduced proportionately. The force at the pushrod is dependant on the gear motor and is determined by contract. 

   

Peak

Continuous 

Friction   

Aileron   

64 lbs   

  32 lbs   

0.8lbs   

Elevator   

170 lbs   

  85 lbs   

2.1lbs   

Rudder   

340 lbs   

170 lbs   

  4.2 lbs   

Standard Specifications include:

Force at the Pushrod dependant on gear motor
Velocity at the Pushrod 25 inches/second
Actuator Stroke 5 inches max, 4 inches usable
Analog to Digital Converter 12 bit
Digital to Analog Converter 12 bit
Iteration Rate >2000Hz
Latency (Ethernet) <5msec
Actuator Bandwidth >30Hz

Achieving these force and friction levels requires careful attention to the linkage gear ratio between the gear motor and the flight controls. We will need to see the details of your linkage design so that we can calibrate the system before it leaves our shop. The price does not include travel to the field by Servos personnel for integration or installation.  We expect to be able to tune the system using email if necessary.

 Interfaces:

Several interfaces are available: Bit 3, Ethernet, DR-11W (Concurrent), HSD (Encore), and UBC (Universal Bus Controller, Harris). Bit 3 is the easiest to use, Ethernet is the lowest cost for hardware. RS-232 can be used for some applications. DR-11W, HSD, and UBC are essentially obsolete and should only be used with older host computers.

Flight Control Software Model  

This software model is based on a KingAir model with centering springs added. The model is designed so that it can be tuned from the host, thus it could be used for any light aircraft or transport. Except for setting the scale factors for position and force, this model will not need to be tuned to each specific application like the Model 400-3 loader does. Without a load cell, the servo loop should be more forgiving.

Control Parameters from Host:

Dynamic pressure, roll rate, pitch rate, yaw rate, dynamic pressure divided by velocity, boost oil pressure, autopilot command, autopilot engage, weight on nose wheel, nose wheel velocity and nose wheel angle.

Safety:

The safety system in the control loader monitors the output to the DAC that drives the drive amplifier. Monitoring the DAC allows the safety software to abort the loader if the command to the drive amplifier is excessive. In addition to the analog variables monitored by the safety software, the enable to the amplifiers has a one shot that must be continuously retriggered by the software. Should the software halt for any reason, the one shot will time out and the loader will abort.

Options:

This system can provide a nose wheel steering simulation and a seat shaker option. Auto-Pilot integration is available upon request.

Power:

115 (230) volts, 7 (3.5) amps peak per axis
115 (230) volts, 1 (0.5) amps quiescent per axis
115 (230) volts, 3 (1.5) amps for the processor

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All Rights Reserved.
407-262-9042