Instrument Approach Spacing
I'm currently studying for a military sponsored aerospace degree and have some questions regading spacing of aircraft on instrument approaches. I am particularly thinking of Heathrow as they have the "greatest" capability in the UK and far greater than anything in the military. I'm particularly interested in:
What is the minimum spacing on the ILS/MLS in VMC?
What is the minimum spacing on the ILS in IMC for Cat 1,2,3 approaches?
What is the minimum spacing on MLS approaches for Cat 1,2,3 approaches?
I would be interested to see the best case figures but appreciate that capacity is limited by surface movement procedures in poor weather.
Is MLS offering the benefits promised? How many runways are operational at LHR and how many inbound a/c are fitted with MMR.
At what point do a/c normally get cleared ot land in the above scenarios?
Apologies for the large list of questions. The topic was discussed at length on pprune and the BBC during the poor weather in December but was lacking some detailed performance figures.