De regeling van het Mach getal in de hoge snelheids tunnel van het NLR

De regeling van het Mach getal in de hoge snelheids tunnel van het NLR

Bos, J.F.T.
Faasse, P.R.

National Aerospace Laboratory NLR

1992-09-01

The High Speed wind Tunnel (HST) of the National Aerospace Laboratory NLR is one of the major transonic windtunnels and is used for aerodynamic research on scale models. The measurements require the control of the Mach number. Two kinds of controller tasks can be distinguished: keeping the Mach number constant, and realizing a different Mach number. When keeping the Mach number constant, substantial disturbances can occur due to a changing angle of attack of the scale model. In the past a PID controller was implemented to counteract these disturbances. The PID controller was only valid in a limited working range of the HST. Therefore, the Mach control system was extended with gain-scheduling techniques and a kind of path-planner for realizing different Mach numbers. Simulation results show that the controller structure yields satisfactory results. Presented at the ARAGO Symposium "Measurement and control technology: the key for many problems", Oct. 8th 1992, University of Twente.

control
adaptive
windtunnel
pid
transonic wind tunnels
feedback control
Mach number
controllers
proportional control
automatic gain control
time lag
windtunnel drives
fan blades
pitch (inclination)

http://resolver.tudelft.nl/uuid:d47e2b85-e782-4383-8400-5eb57bdea05b

Nationaal Lucht- en Ruimtevaartlaboratorium

Campus only

NLR Technical Publication TP 92371 U

Aerospace Engineering Reports

report

(c) 1992 National Aerospace Laboratory NLR