Originally Posted by
WHBM
These wouldn't by chance be the two engines, in wheeled stands and with simple props, which were displayed running, side-by-side, at Flying Legends at Duxford some years ago ? They were certainly a big Rolls-Royce in-line and a big Pratt radial.
WHBM
I am pretty sure they have never been off the sites of the test rigs apart from the Griffon moving from Uxbridge to Leighton Buzzard. I first tested at Uxbridge with the Griffon in 1987 and it had been there a few years then already.
They are on wheeled stands and are positioned in front of the facades to be tested and there is a a gantry with spray bars in front of the engine to simulate rain fall. The rear of the facade is boxed in a depressurised to try and force a leak in the facade which you monitor from inside the test rig.
Always fun to hear them crank up especially the Griffon.
Cheers
Mr Mac