I'm trying to get a feel for the real life behavior of hover craft air cushions and the associated power consumption. To get a feel for relevant numbers, I'd like to know
- actual pressure used to lift said hover craft
- the clearance (average or range) between skirt and water/ground surface
- the air loss through that clearance
One could treat the clearance as a simple slit, however the air flow under a hover craft is more complex that that due to the round shape of the skirt. In practical operation the craft will hover around an equlibirium where the pressure is "weight of hovercraft" / "area under skirt" and the clearance is higher or lower depending on airflow (or the airflow is higher or lower depending on clearance required). An empirical formula for the relationship between pressure, clearance, skirt length and air flow would be even better, but real life numbers for one situation are ok.