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1. Explosive mass drop test equipment comprises: a base assembly: including the following components: a concrete foundation, a steel plate, a blast block, retaining bolts; wherein: the concrete foundation: employing concrete grade 400 (MPa) with durability level B30 and compressive strength≥51.37 Mpa; the concrete foundation is made from concrete block size 5000×2800 mm (±5%) with depth of 300 mm (±5%); steel beams on concrete are mounted and arranged with L-bars with one bolt head, the positions of the bolts correspond to connection holes on a code plate of a bracket assembly; bolts with durability grade of 8.8 or higher, bolt diameter is 30 mm; the steel plate: with an average thickness of 70 mm (±5%) with an area of 3100×2200 mm (±10%); the steel plate is attached to the concrete base through a mechanism of fifteen sets of externally threaded retaining bolts; the retaining bolts: fixing the steel plate to the concrete base having a diameter of 1 inch, selected with a suitable thread to fix the steel plate to the concrete foundation; an explosion-splitting block: consists of four blocks, made of concrete, cylindrical structure, diameter 1300 mm (±5%), height 1400 mm (±5%), an outer rim is reinforced concrete, a core of the block is concrete grade 250 or higher with strength B30 and compressive strength≥51.37 MPa; a load-bearing frame and a suspension bar are welded structures with dimensions (width×height) of 1900×2800 mm (±5%); the load-bearing frame and suspension bar are made from H-shaped welded structural steel beams (HSWS) according to ISO 657-16:1980, JIS 3192:2014 standard with thickness t2=20 mm; on the hanger, at the center of the suspension bar a cut out groove is provided to install a hanging rod with a width of 20 mm and a depth of 100 mm; the load-bearing frame is connected to the concrete foundation through connections using a system of six ciphertexts; the ciphertexts are made from steel plates of common steel grades such as CT3, SS400, A36; steel thickness 20 mm; on the face of each steel plate, four holes are drilled for mounting with anchor bolts attached to the fixed steel beams during the pouring of concrete; drop mechanism assembly: including components comprising control bolts, mounting plates, hanging rods, wire hangers; wherein at least one of the control bolts comprises: a device with the function of effectively fixing two objects and separating them by explosive force precisely when there is a detonation voltage; this control bolt precisely controls the moment of drop; this unit is designed for rocket, spaceship and marine applications; control bolt includes components: a bolt body, an explosive sleeve, a detonator, an explosive; wherein: the bolt body: made of 17-4PH stainless steel, length of bolt body 70 mm; the threaded part is ½ inch (12.7 mm) in diameter and 26.6 mm long; initiator: made of 17-4PH stainless steel, the fuse used is ZPP (zirconium-potassium perchlorate) used to detonate the explosive mounted in the bolt; the explosive: is a mixture of explosives (type RDX and PETN) in conjunction with priming material (type (Lead azide); RDX has the legal name, cyclotrimethylene-trinitramine, cyclonite, T4) is an explosive widely used in military and industrial applications; PETN, legal name pentaerythritol tetranitrate, common name: penthrite; chemical formula: C(CH2ONO2)4) is used as the explosive conductor and main explosive of small ammunition, now it is used as the following explosive in the detonator, used as a core drug of a detonation line; lead azide with the formula (Pb(N3)2) is an explosive, used as a detonator, as a primer in detonators; in white crystalline form it has a packing density of 4.71 g/cm3; lead azide is instantly flammable for explosive transitions; a mounting plate: is made from steel plates of common steel grades such as CT3, SS400, A36; c. steel thickness 20 mm, size of the mounting plate is 100×300 mm±5%; t, at the center of the mounting plate drill a hole mm so that the threaded part and the cylindrical part of the bolt body can be penetrated, the use of the mounting plate is to evenly distribute the weight of the drop mechanism assembly and the explosive block container to both sides of the groove where the suspension bar is installed; the suspension bar: is from cylindrical billet steel with diameter from 20 mm to 30 mm; fabrication materials are common steel such as CT3, SS400, A36; threaded rods with a length of 700 mm to 800 mm; one end of the sling has an internal threaded hole of 12.7 mm diameter 50 mm depth, one end is threaded from 20 mm to 30 mm in diameter, 500 mm to 600 mm in length, the inner threaded end of the sling attaches to the control bolt and the outer threaded end of the sling attaches the wire hanger; a rope hanger: including a wire hanger, a rope holder, a position screw; wherein a hanger compartment made of sheet steel 10 mm±5% thickness 150×200 mm±5%; there is a hole in the middle of the wire hanger with a diameter 5 mm±5% larger than the rod diameter; at the four corners of a cavity, there are four wire retaining edges made of bar steel of common steel grades such as CT3, SS400, A36 with size 10×10 mm±5%, height 50 mm±5% at four corners for hanging the explosives container; four wire retainers are attached to the wire hanger by welding the four second retainers; an adjusting screw made of tool steel with an internal thread to match the external thread of the hanger; the adjusting screw attaches to the wire hanger by welding.
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