Mechanical and aging properties of solid rocket propellants

Hocaoğlu, Özgür


Mechanical and burning properties of highly loaded composite propellants
Gocmez, A; Erisken, C; Yılmazer, Ülkü; Pekel, F; Özkar, Saim (1998-02-22)
An improvement in the performance of solid rocket motors was achieved by increasing the oxidizer content of HTPB-based solid propellants. To minimize the adverse changes in the mechanical and rheological properties due to the increased amount of hard solid particles in the soft polymeric binder matrix, the optimum combination of the particle sizes and volume fractions of the bimodal ammonium perchlorate and the aluminum powder in the solid load was obtained from the results of testing a series of propellant...
Mechanical and microstructural evolution of solid graphite rocket nozzle throats in extreme temperature and pressure conditions
Kaygusuz, Burçin; Nigar, Barış; Ünlüsoy, Levent; Çöker, Demirkan; Özerinç, Sezer (null; 2018-10-25)
Durability of the rocket nozzle and the throat component is one of the key aspects for the reliable operation of a rocket during its trajectory. Graphite is commonly used as a throat material due to its high temperature resistance, ablative characteristics and low cost. However, graphite can fracture due to the combined effects of thermal loading and pressure during rocket firing, which is catastrophic for the operation of the rocket. Therefore, there is a need to understand all aspects of graphite failure,...
Mechanical properties of solid rocket propellants.
Gocmez, Ahmet; Yılmazer, Ülkü; Özkar, Saim; Department of Chemical Engineering (1996)
Mechanical, electrical, and melt flow properties of polyurethane elastomer/surface-modified carbon nanotube composites
Tayfun, Umit; KANBUR, YASİN; ABACI, UFUK; Guney, Hasan Yuksel; Bayramlı, Erdal (2017-06-01)
Carbon nanotube-reinforced polyurethane elastomer composites were prepared by melt-mixing. Nitric acid oxidation and silanization were applied to carbon nanotube surfaces to achieve better interfacial interactions with polyurethane elastomer. Tensile and hardness tests, differential scanning calorimetry, melt flow index test, dielectric measurements, and morphological studies of composites were reported. The best results were obtained for surface-modified carbon nanotubes containing composites with lower lo...
Mechanical and biological properties of Al2O3 and TiO2 co-doped zirconia ceramics
Agac, Ozlem; Gozutok, Melike; TÜRKOĞLU ŞAŞMAZEL, HİLAL; Öztürk, Abdullah; PARK, JONGEE (2017-09-01)
Various amounts (ranging from 0 to 2 wt%) of TiO2 and Al2O3 were mono and co-doped to tetragonal zirconia ceramic containing 3 mol% yttria (3Y-TZP) by mechanical ball milling. Powders were compacted by uniaxial pressing at a pressure of 23 MPa. The compacts were pressureless sintered at 1450 degrees C for 2 h. Density, hardness, fracture toughness, and cell attachment of the co-doped 3Y-TZP ceramics were measured with respect to dopant addition to determine the effects of the kind and amount of dopants on t...
Citation Formats
Ö. Hocaoğlu, “Mechanical and aging properties of solid rocket propellants,” Middle East Technical University, 1998.