![](/sites/default/files/2020-08/TWIN%20ROLL%20MODEL%20SUPPORT%20SYSTEM%20%28TRMS%29.jpg)
Twin Roll Model Support System (TRMS)
![TWIN ROLL MODEL SUPPORT SYSTEM (TRMS)](/sites/default/files/inline-images/TWIN%20ROLL%20MODEL%20SUPPORT%20SYSTEM%20%28TRMS%29.jpg)
The above picture shows TRMS mounted in wind tunnel with an aircraft model.
The main features of TRMS are :
- Versatile model support system to provide required Alpha-Beta combinations for wind tunnel models
- Angle between primary and secondary roll axes is 15 deg
- Operation in manual or program mode possible
- Alpha Range: ± 35 deg, Beta Range: ± 10 deg
- Computer controlled trajectory motion in continuous or step mode during blowdown
- Can maintain constant Alpha during a Beta sweep and vice versa
Plane of symmetry of model always maintained vertical