Thread: Snorkel heads.

Snorkel for wading, cooler air or less dust, more so with Donaldson.

A bit of physics and aerodynamics ...................with jet engines, "ram" pressure drops with forward speed. Hence the term "static thrust". (max thrust is developed while brakes are on) "Ram" recovery doesn't occur till around 300mph. EPR (engine pressure ratio) is another story

Flowing air exerts less pressure than static, hence static vent, and pitot pressure (airspeed indicators work pretty well from wheels rolling) airspeed = pressure difference between pitot and static pressures...................Oh! and airspeed drops as altitude increases.

Another wee consideration is overspeeding the turbo. Low tubo outlet pressure causes the controller (of many descriptions) to demand more air and hence more speed. (unless there is an overspeed control) Crook/clogged air filters or inlet tracts are able to cook a turbocharger or possibly fling many bits through many places they are not meant to be

Cheers

RF

I do believe jet engines suck an aeroplane along.

May need a new thread to tackle this one.