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[2] [3] For shallow water surface supply air diving, the diver's umbilical is typically a 3-part umbilical comprising a 3 ⁄ 8 inch (9.5 mm) bore breathing gas hose, 1 ⁄ 4 inch (6.4 mm) bore pneumofathometer ("pneumo") hose, and diver communications cable, which usually also serves as a lifeline strength member. The pneumo hose is open at ...
Liquid rocket fuel. Oxidizer. Pumps carry the fuel and oxidizer. The combustion chamber mixes and burns the two liquids. The hot exhaust is choked at the throat, which, among other things, dictates the amount of thrust produced. Exhaust exits the rocket.
A barb (or hose barb), which connects flexible hose or tubing to pipes, typically has a male-threaded end which mates with female threads. The other end of the fitting has a single- or multi-barbed tube—a long tapered cone with ridges, which is inserted into a flexible hose.
Figure 1: A de Laval nozzle, showing approximate flow velocity increasing from green to red in the direction of flow Density flow in a nozzle. A rocket engine nozzle is a propelling nozzle (usually of the de Laval type) used in a rocket engine to expand and accelerate combustion products to high supersonic velocities.
Pressure-fed rocket cycle. Propellant tanks are pressurized to directly supply fuel and oxidizer to the engine, eliminating the need for turbopumps. The pressure-fed engine is a class of rocket engine designs. A separate gas supply, usually helium, pressurizes the propellant tanks to force fuel and oxidizer to the combustion chamber. To ...
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Data from The International Directory of Civil Aircraft, 2003-2004 General characteristics Crew: one Capacity: four passengers Length: 29 ft 10 in (9.09 m) Height: 9 ft 7 in (2.92 m) Empty weight: 1,675 lb (760 kg) Gross weight: 2,850 lb (1,293 kg) Powerplant: 1 × Rolls-Royce Model 250-C20W turboshaft, 285 hp (215 kW) Main rotor diameter: 32 ft 0 in (9.75 m) Main rotor area: 804 sq ft (74.7 m ...