PPRuNe Forums - View Single Post - Accumulator braking
View Single Post
Old 21st Apr 2013, 10:24
  #13 (permalink)  
cockney steve
 
Join Date: Jan 2008
Location: lancs.UK
Age: 77
Posts: 1,191
Likes: 0
Received 0 Likes on 0 Posts
Somewhat off topic but related:- Citroens with hydro-pneumatic brakes, including the magnificent DS and CX designs, had just such .a system (Also licensed to RR for the Shadow and Spirit .
For the tech . minded, Citroen used a belt-driven multi-cylinder Swash-plate pump which charged an accumulator , being a sphere with a diaphragm dividing it. the back of the diaphragm was nitrogen-pressurised. A priority- valve sequentially isolated the Suspension, Steering assistance and finally the brakes.
With a good accumulator , a half-dozen applications could be performed.

This presupposes you ignored the christmas-tree of red panel "STOP" lights.

It was possible to "ease" the brakes and thus extend the cycles, but frightening in 2 tons of Rolls, the parking-brake of which was somewhat marginal!

A steady pressure to standstill is the technique of choice and i guess the aircraft system is the same.
cockney steve is offline