Keyword: Combustion and combustion processes

Briefs: Energy
The advent of nanoparticle fuels enables new kinds of reactions, and new kinds of applications.
Briefs: Propulsion

Strategies to control solid rocket propellant regression rate require a robust throttling technique applicable to high performance propellant...

Briefs: Propulsion

In the study of combustion characteristics of liquid rocket fuels, it is customary to either study the combustion of liquid fuel droplets...

Briefs: Test & Measurement

The objective of this work is to identify isotopic ratios suitable for analysis via mass spectrometry that distinguish between commercial...

Briefs: Aerospace

The rapid expansion of the remotely piloted aircraft market includes an interest in 10 kg to 25 kg vehicles (Group 2) for monitoring, surveillance, and...

Articles: Aerospace

The global aerospace sector has always represented the cutting edge of practical technology advancement. When the first military jet engines emerged in the post-war 1940s it was clear that commercial...

Technology Update: Defense

Boeing is “running on schedule” as it continues to achieve production milestones for the first of its all-electric-propulsion 702SP (small platform)...

Articles: Electronics & Computers

Anovel tested technology for cooling electronic circuitry is also useful in many other industries. The method is called “Thin Cavity Fluidic Heat Exchanger”(TCFHE). Technology details can be...

Application Briefs: Defense

In January, Concepts NREC (CN) was awarded a Phase I Small Business Innovative Research (SBIR) grant from the Navy to improve the power efficiency of its gas turbine prime...

Application Briefs: Test & Measurement

Radar cross section (RCS) is the measure of an object's ability to reflect radar signals in the direction of the radar receiver, i.e. it is the measure of the ratio of backscatter per...

Briefs: Mechanical & Fluid Systems

Interceptor boost propulsion has traditionally been dominated by solid rocket systems due to their responsiveness and high mass fraction capabilities. However, increased costs of...

Briefs: Mechanical & Fluid Systems
Parallel Hybrid Vehicles Using Fuzzy Logic Control

A fuzzy logic controller for hybrid vehicles with parallel configuration was proposed. Using the state-of-charge (SOC) of the energy storage, the driver command, and the motor/generator speed, a set of rules was developed. The fuzzy logic controller can determine the split between the electric...

Briefs: Physical Sciences

The supersonic combustion ramjet (scramjet) engine is one of the more promising high-speed flight propulsion technologies. One of the reasons for this is the simplicity of the engine design, having no...

Briefs: Physical Sciences

Supersonic combustion has been of interest for many years in order to support future Air Force hypersonic missions. The current generation of...

Briefs: Mechanical & Fluid Systems

Water mist has been determined to be a preferred alternative to Halon 1301 total flooding to extinguish fires occurring in ship machinery spaces and pump rooms, because it is...

Briefs: Physical Sciences
Digital-Image Data Acquisition System for Turbulent Mixing and Combustion

An equipment and instrumentation system for high-speed digital image data acquisition and processing includes components for Planar Laser Induced Fluorescence (PLIF), flame-speed, and ignition and extinction measurements of laminar flames at variable pressure; tracking...

Briefs: Information Technology
Magneto-Fluid Dynamics Calculations for Aerodynamics

Governing differential equations, and algorithms to solve the equations numerically, have been developed to enable computational simulation of weakly ionized aerodynamic flows in the presence of electromagnetic fields. The equations and algorithms are intended mainly for application to...

Briefs: Physical Sciences
Mixing and Combustion in Turbulent, High-Speed Flows

A collection of reports presents a detailed description of a research program that focused on fundamental investigations of mixing and combustion in turbulent subsonic and supersonic flows like those encountered in high-speed air-breathing aircraft engines. The research included close...

Briefs: Physical Sciences

Asystem of scientific instrumentation and data-processing equipment has been assembled for research and education in turbulence, mixing, and chemical reactions (especially combustion) in...

Briefs: Manufacturing & Prototyping

A small-scale combustion-chamber testing facility has been designed and partly built for use in evaluating advanced combustor designs for future gas turbine engines. The specific model...

Briefs: Materials

Research on the microstructures, chemical compositions, and reactivities of thermites that consist of or contain mixtures of MoO3 and Al particles has led to development of a process for making...

Briefs: Mechanical & Fluid Systems

Turbine engine designers routinely use film cooling to cool engine components in the hot-gas flowpath. Film cooling is the process of injecting coolant fluid at one or more discrete locations along a surface...