Tornado Pitch Computer (space model)

Technical Information

Catalogue No: C0991
Category: Flight Control
Object Type: Model
Object Name: Tornado Pitch Computer (space model)
Part No: 47-008-01
Serial No: 25/001
Manufacturer: Marconi-Elliott Avionics
Division: Unknown
Platform(s): Tornado 
Year of Manufacture: 1973
Dimensions:
Width (mm):
260 
Height (mm):
190 
Depth (mm):
380 
Weight (g):
Location: Archive Object Store
Inscription(s):

Pitch Computer

Notes:

The command stability augmentation system: (CSAS) is by its very nature one of the most complex systems on Tornado. Hardly detectable in the cockpit, the CSAS keeps the ride comfortable at all speeds and altitudes, and makes the aircraft controllable throughout the flight envelope.It is a “fly-by-wire” system with autostabilisation, the pilot’s control demands being signalled and augmented electrically to maintain good handling qualities over the wide flight envelope. In the pitch axis, the fly-by-wire system has mechanical reversion. The system is triplicated and includes triplex computing, triplex rate gyros, triplex position sensors and a triplex accelerometer, with quadruplex outputs driving quadruplex electrohydraulic actuators. These “fly-by-wire” actuators were originally designed by Marconi-Elliott Avionic Systems Limited and have now been integrated by Fairey Hydraulic into the aircraft’s main hydraulic power control units.
The CSAS electronics is packaged in two units, the pitch computing circuitry being housed in a single computer and the roll, yaw and spoiler circuitry in a similar computer.
The system uses very high-precision analogue circuitry to provide accurately- matched control lanes, and a unique voter monitor design which reduces transient effects, due to system failures, to a low level and is so designed also that nuisance warnings are rare.
Marconi-Elliott Avionic Systems Limited has design leadership on the CSAS programme, but shared the production with Bodenseewerk Geratetechnik.
The system was designed to Specification SP-P-41600.


This is a model of the CSAS Pitch Computer unit.

Click to enlarge