Explosion chamber

The principal input and output tests used by the US at the time of publishing NOLTR 1111(1952) included Drop Ball Testers (two types) Sand Bomb Apparatuses 100, 200, 360 500 gram Condenser Discharge Apparatus Torsional Ballistic Pendulums (two types) Drop Ball Test Set Mk 135 with Chronograph Thermocouple Drop Ball Test Set Mk 136 with Chronograph Gas Explosion Chambers (two types) Gas Volume and Impulse Apparatus Pressure Bomb Apparatus and Hopkinson Bar Apparatus (Ref 11, pp 9-2 9-3, Table 9-D... 

The Home Office testing station was transferred to Rotherham in 1911 and a new gallery was erected. It was 5 ft dia., with an explosion chamber 18 ft long. The steel mortar was 120 cm long with a 55 mm bore. 

Method of testing in the presence of methane. An explosion chamber 10- 11m3 in capacity is separated by a gas-proof diaphragm within the experimental gallery. 

The loaded mortar is moved through the window into the explosion chamber of the experimental gallery. 

If any residue of the explosive is found in the bore of the mortar or in the explosion chamber, the test is considered a failure irrespective of whether or not the coal-dust is ignited. 

Coal-dust test. 1500 g coal-dust is uniformly scattered on the four shelves fixed to the walls of the explosion chamber of the gallery, and stirred by the air current produced by a fan. One minute after stopping the fan, the charge is fired. Relative humidity in the explosion chamber is kept below 80%. The test is repeated five times under the same conditions as those in the methane test. No ignition should occur. 

An opening in the closed end (base) is provided for insertion of the muzzle of a special cannon (mortar). The first few meters of the closed end are separated from the open end by means of a paper partition, and this section is called "explosion chamber or gas chamber"... 

DEFENSIVE APPARATUS OF A BOMBARDIER BEETLE B, COLLECTING VESICLE E, EXPLOSION CHAMBER G, ECTODERMAL GLANDS SECRETING CATALASE L, SECRETORY LOBES M, SPHINCTER MUSCLE 0, OUTLET DUCT. B CONTAINS A MIXTURE OF HYDROQUINONE AND HYDROGEN PEROXIDE, EXPLODED BY CATALASE WHEN IT PASSES INTO E. 

A — Explosion chamber B — Expansion chamber C — Paper roll D — Paper diaphragm E — Pipe conducting... 

The shafts shall be tightened when entering the explosion chamber (1). This chamber shall withstand an explosion pressure of 1.5 MPa (=15 bar). Figure 8.12 shows a longitudinal section drawing of the spark test apparatus and Fig. 8.13 this apparatus in its entirety (cover of explosion chamber removed, however). 

Fig u re 8.13 Spark test apparatus, total view (cover of explosion chamber removed). 

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