"' Overall pressure loss across different pressure meters "'using a Venturi tube to measure flow causes a pressure drop in the flow which is partly recovered downstream of the meter.
12.
The primary difference between carburetors and fuel injection is that fuel injection atomizes the fuel through a small nozzle under high pressure, while a carburetor relies on suction created by intake air accelerated through a Venturi tube to draw the fuel into the airstream.
13.
In the RT-20 however these negative effects proved to be not as relevant as in an anti-tank weapon, as in its case the portion of gas funneled through the venturi tube is far less than what will exit from the muzzle.
14.
According to the Jerusalem Talmud's definition, the use of the Venturi tube spray system and spray painting would come under this prohibition, while butane or propane propelled sprays, which are common in deodorants and air fresheners, etc . are permissible to operate as the dispersal force generated isn't from air, rather from the propellent within the can.
15.
A de Laval nozzle will only choke at the throat if the pressure and mass flow through the nozzle is sufficient to reach sonic speeds, otherwise no supersonic flow is achieved, and it will act as a Venturi tube; this requires the entry pressure to the nozzle to be significantly above ambient at all times ( equivalently, the stagnation pressure of the jet must be above ambient ).
