This work summarizes the development of a gas turbine combustion experiment which will allow advanced optical measurements to be made at realistic engine conditions. Facility requirements are addressed, including instrumentation and control needs for remote operation when working with high energy flows. The methodology employed in design optically accessible chamber is elucidated, window considerations thermal management experimental hardware under extremely heat loads. Experimental...

Following three decades of research in short duration facilities, Purdue University has developed an alternative turbine facility view the modern technology computational fluid mechanics, structural analysis, manufacturing, heating, control, and electronics. The proposed can operate continuously also perform transients, suited for precise heat flux, efficiency, optical measurement techniques to advance aerothermo-structural engineering. two different test sections, linear annular, service...

Energy management in missile systems can provide substantial performance advantages, especially for modern missiles capable of all-aspect engagements. upper stage propulsion allows the same system to be used a variety payloads and orbits. The objectives study were assess throttling capabilities novel fuel concepts hybrid motors. Experimental studies conducted using 90% hydrogen peroxide (HP) with unique fuels both direct injection catalytic bed approaches. Performance efficiencies ranged...

A wave rotor constant volume combustor was designed and built as a collaborative work of Rolls-Royce, Indiana University-Purdue University Indianapolis (IUPUI),

The development and implementation of a dual-pump coherent anti-Stokes Raman scattering (DP-CARS) system employing two optical sub-systems to measure temperature major species concentrations at multiple locations in the flame zone high-pressure, liquid-fueled gas turbine combustor are discussed. An optically accessible facility (GTCF) was utilized perform these experiments. A window assembly has been designed, fabricated, assembled GTCF allow access from three directions using pair thin...

An optically accessible combustion rig was constructed to study the characteristics of a reactive jet in vitiated crossflow. The features two staged zones. main zone is swirl stabilized dump combustor. second zone, which axially downstream from formed by transverse injecting either fuel or premixed fuel/air mixture into stream. designed investigate conditions, equivalence ratio, and momentum ratios that produce low NOx give an adequate temperature rise before simulated high pressure turbine....

I njector spray characteristics have a significant influence on the combustion performance in gas turbine engine, including an impact dynamics, emissions and component life. Furthermore, commercial aviation faces fuel cost, environmental, energy security challenges that arise from use of petroleum based jet fuels. Sustainable alternative fuels can help address these need to be characterized their performance. The present work describes detailed characterization several using hybrid airblast...

A Wave Rotor Combustion Rig (WRCR) is under development by a team including Purdue University, Rolls-Royce (LibertyWorks © ) and Indiana University-Purdue University. Theoretically, the wave rotor configuration provide s improved efficiency for gas turbine machines via nearly constant volume combustion process that permits significant pressure rise within combustor. The objectives of WRCR experiment include concept verification performance advanced combustor design turbomachinary-based...

An optically accessible gas turbine combustor test rig was constructed to study the combustion characteristics of a coaxial hydrogen/air jet injected into vitiated swirl crossflow. The has two zones. main zone (MCZ) is stabilized dump combustor, and secondary (SCZ) reacting crossflow jet, referred as jet-in-crossflow (JIC). SCZ located downstream MCZ. JIC that penetrates radially stream. designed effects conditions on process in particular NOx production. velocity equivalence ratio were...

Catalyst beds designed to decompose hydrogen peroxide have been in use since the late 1930s a variety of applications. While many decomposition methods investigated over years, silver screen technology has proven be very reliable for Rocket Grade Hydrogen Peroxide. A small catalyst bed developed by Purdue University students study effect high operating pressures on performance bed. The was nominal mass flow rate 90% 0.3 lbm/s (0.136 kg/s) corresponding loading 0.37 lbm/s-in (0.026 kg/s-cm)....

A small silver-screen hydrogen peroxide catalyst bedwas developed to study the effect of high operating pressures on performance device. The bed was designed for a nominal mass flow rate 90 wt % 0:32 lbm=s (0:145 kg=s) corresponding loading 0:4 in (0:03 kg=s cm). Twelve separate tests were conducted at chamber ranging from 1000 4000 psia (69 276 bar), and companion analysis assess results observed trends. Results indicate that could be operated with decomposition efficiencies, low pressure...

Nitrous oxide has gained popularity as a unique oxidizer for propulsion applications due to its ability decompose exothermically, producing nitrogen and oxygen. In the current work, flame acceleration, deflagration-to-detonation transition, detonation properties of bipropellant mixtures with are studied potential in pulsed blowdown detonation-driven thrusters. These compared those oxygen or tetroxide oxidizer. The performance versus engine is investigated using theoretical Chapman–Jouguet...

A new type of catalyst system for use in decomposing hydrogen peroxide was studied. The composed sodium permanganate loaded onto a cordierite-based ceramic material that had not previously been used this manner. Both immersion tests and full engine flow were conducted variety configurations preparation procedures. One bed good performance, at approximately 94% C* efficiency. performance the other beds between 40% 70%. Nomenclature

A review of recent testing has been performed to assess the viability a wave-rotorbased pressure-gain combustor. Tests accomplished in 2009 at Purdue Zucrow lab on Wave Rotor Combustor Rig (WRCR) provide basic information combustion processes achievable wave rotor passage. During 30 day test period, 34 successful tests were completed, longest which was 3-second firing completed totaled nearly 2,000 individual events. Analysis results indicated stable combustor operation. The operability...

Combustion experiments have been conducted to assess the influence of fuel temperature on emissions and performance using a Rolls-Royce 501K combustor as platform for study. A total 27 tests were (Jet-A) at room temperature, 250 °F, 450 °F target temperatures. Fuel was sparged remove dissolved oxygen content high tests; typical levels in delivery point test article 0.2% fully saturated values. Unburned hydrocarbon, carbon monoxide NOx recorded all conditions frequency pressure measurements...

Following three decades of research in short duration facilities, Purdue University has developed an alternative turbine facility view the modern technology computational fluid mechanics, structural analysis, manufacturing, heating, control and electronics. The proposed can perform both transients long tests, suited for precise heat flux, efficiency optical measurement techniques to advance aero-thermo-structural engineering. two different test sections, linear annular, service fundamental...