investigations were carried out to evaluate the performance of direct injection diesel engine with medium grade low heat rejection (lhr) combustion chamber and 3 mm air gap insulated piston, 3 mm air gap insulated liner, and ceramic coated cylinder head [ceramic coating with the thickness of 500 µ was made on the inside portion of the cylinder head].the engine had different operating conditions...

Autonomous navigation methods for spacecraft formation flying in cislunar space Sergio Bonaccorsi Abstract. Due to the increasing number of deep missions following years, focus on and strategies that enable a perform critical operations autonomously is becoming crucial. In context space, this research aims investigate […]

Since the first laser was invented, pursuit of high-energy lasers (HELs) has always been enthusiastic. The revolution HELs pushed by fusion and aerospace in 1960s, with chemical rocket engines giving fresh impetus to birth gas flow lasers, which finally turned megawatt from dream into reality. Nowadays, development entered age electricity as well engines. properties current electric are highly ...

Currently, a new generation of scientific aerospace vehicles, using advanced hypersonic airbreathing propulsion based on supersonic combustion technology, is in development at several research centers [1]. The 14-X Brazilian Hypersonic Aerospace Vehicle, Figure 1, designed by Rolim et al. [2], at the Prof. Henry T. Nagamatsu Laboratory of Aerothermodynamics and Hypersonics, Figure 2, at the Ins...

Characterisation of space debris has become a fundamental task to facilitate sustainable operations. Ground-based surveillance provides the means extract key attributes from spacecraft. However, signal inversion attempts are generally under-constrained, which is why an increase in measurement channels through multispectral observations expected benefit parameter estimation. The current approach...