Molecular-Beam Mass-Spectrometry of Combustion Products of Solid Rocket Propellants at 40 atm Pressure

2017 ◽  
Keyword(s):  
Mass Spectrometry ◽  
Molecular Beam ◽  
Combustion Products ◽  
Molecular Beam Mass Spectrometry ◽  
Rocket Propellants ◽  
Solid Rocket ◽  
Solid Rocket Propellants

STUDIES OF THE INFLUENCE OF ENERGETIC ADDITIVES ON SELECTED PROPERTIES OF HETEROGENEOUS SOLID ROCKET PROPELLANT WITH LOW CONTENT OF HCL IN COMBUSTION PRODUCTS

2018 ◽  
Vol 144 (4) ◽  
pp. 15-30
Author(s):  
Paulina MAGNUSZEWSKA ◽  
Rafał Bogusz ◽  
Bogdan Florczak
Keyword(s):  
Sodium Nitrate ◽  
Specific Impulse ◽  
Combustion Products ◽  
Heat Of Combustion ◽  
Mechanical Stimuli ◽  
Rocket Propellants ◽  
Ballistic Properties ◽  
Solid Rocket ◽  
Solid Rocket Propellants ◽  
Heterogeneous Solid

The paper presents influence of additives like aluminium, magnesium, AMD (aluminium-magnesium dust) and boron on selected properties of heterogeneous solid rocket propellants (HSRP) based on HTPB in which ammonium chlorate was partly replaced by sodium nitrate. The presence of sodium nitrate reduces the content of hydrogen chloride (HCl) in combustion products. Theoretical values of thermochemical and thermodynamical properties like isochoric heat of combustion (Q), specific impulse (Isp) and combustion products in motor chamber and nozzle were identified by ICT-Code program. A laboratory rocket motor (LRM) was used to examine ballistic properties for prepared samples of propellants. Their temperature of decomposition, heat of combustion and hardness were tested both with sensitivity to mechanical stimuli (impact, friction) and rheological properties at curing.

Using Molecular-Beam Mass Spectrometry to Study the Pecvd of Diamondlike Carbon Films

1993 ◽  
Vol 334 ◽  
Author(s):  
I.B. Graff ◽  
R.A. Pugliese ◽  
P.R. Westmoreland
Keyword(s):  
Mass Spectrometry ◽  
Vapor Deposition ◽  
Molecular Beam ◽  
Film Growth ◽  
Chemical Vapor ◽  
Carbon Films ◽  
Total Flow ◽  
Measured Concentration ◽  
Molecular Beam Mass Spectrometry ◽  
Diamondlike Carbon

AbstractMolecular-beam mass spectrometry has been used to study plasma-enhanced chemical vapor deposition (PECVD) of diamondlike carbon films. A threshold-ionization technique was used to identify and quantify species in the plasma. Mole fractions of H, H2, CH4, C2H2, C2H6 and Ar were measured in an 83.3% CH4/Ar mixture at a pressure of 0.1 torr and a total flow of 30 sccm. Comparisons were made between mole fractions measured at plasma powers of 25W and 50W. These results were compared to measured concentration profiles and to film growth rates.

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