BS EN 16603-33-11 pdf free download

BS EN 16603-33-11-2019 pdf free download.Space engineering – Explosive subsystems and devices.
3.2.7 deflagration
self-sustaining, exothermic decomposition reaction of an explosive substance, whose apparent velocity is less than the velocity of sound in the substance and greater than the speed of sound in air
NOTE It is generally accepted that the energy transmission takes place via a mechanical compression wave. This type of reaction is intermediary between combustion and detonation. It differs from combustion through the presence of a significant compression wave in the surrounding environment.
[Dictionary of explosive related terms]
3.2.8 detonation
exothermic decomposition reaction of an explosive substance self-sustained by a shock wave, whose velocity of propagation is greater than the velocity of sound in the substance
NOTE The velocity of propagation is of the order of several thousands of m/s.
[Dictionary of explosive related terms]
3.2.9 detonator
initiator whose function is to transform external energy directly into a shock wave strong enough to detonate a secondary high explosive
NOTE External energy can be, for example, mechanical, electrical and thermal.
[Dictionary of explosive related terms]
3.2.10 electro-explosive device
device containing some reaction mixture that is electrically initiated
NOTE 1 The output of the initiation is heat, shock or mechanical action.
NOTE 2 The reaction mixture can be explosive or pyrotechnic. [Dictionary of explosive related terms]
3.2.11 end-user
person who or organization that actually uses a product
NOTE 1 The end-user need not to be the owner or buyer.
NOTE 2 In the context of this standard the end user is generally the first level customer.
3.2.12 energetic material
material consisting of, or containing, an explosive, oxidizer, fuel, or combination of them, that can undergo, contribute to, or cause rapid exothermic decomposition,combustion, deflagration, or detonation
3.2.13 explosively actuated device
device that converts the products of explosion into useful mechanical work
NOTE 1 The explosion can be combustion, deflagration or detonation.
NOTE 2 Pyromechanisms and linear detonating separation devices are explosively actuated devices.
3.2.14 explosive train
series of explosive components including the initiator, explosive transfer assembly and explosively actuated device
3.2.15 explosive component
discrete item containing an explosive substance
3.2.16 explosive function
function that uses energy released from explosive substances for its operation
3.2.17 explosive subsystem
collection of all the explosive trains on the spacecraft or launcher system, and the interface aspects of any on-board computers, launch operation equipment, ground support and test equipment and all software associated with explosive functions
3.2.18 fail operational
mission capable after one failure
NOTE Maintaining operational conditions after one failure and safety conditions after a second independent failure is referred to as “Fail operational – Fail safe”.
3.2.19 fail safe
design property of a subsystem, or part of it, which remains safe after one failure
NOTE Maintaining safety following two independent failures is referred to as “Fail safe – Fail safe”.
3.2.20 gas generators
explosive devices that produce a volume of gas or exothermic output or both
NOTE E.g. pyrotechnic igniters for solid propulsion applications, gas generator for inflatable structures.
3.2.21 initiator
basic component located upstream of an explosive train, from which originates a transformation of mechanical, electrical or optical energy, the effect produced being a combustion, deflagration or detonation.
NOTE 1 It contains a small quantity of an energetic material.
NOTE 2 Examples: hot bridge wire initiator, exploding bridge wire initiator.BS EN 16603-33-11 pdf download.