Topic
Afterburner
About: Afterburner is a research topic. Over the lifetime, 811 publications have been published within this topic receiving 5944 citations.
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TL;DR: In this article, the performance modeling of a low bypass turbofan engine for supersonic aircraft is described by using the published data from the open literature as initial data for building the F100-PW-229 engine performance model.
Abstract: The details of engine manufacturer's engine simulations are generally kept secret and only those parameters that are used for control purposes are accessible to users. Hence, there is often only a limited amount of data accessible for creating a performance model of the engine. The performance modeling of a low bypass turbofan engine for supersonic aircraft is described herein. The Pratt and Whitney F100-PW-229 engine has been employed for low bypass turbofan engine performance modeling. Published data from the open literature are used as initial data for building the F100-PW-229 engine performance model. The unknown components' characteristics were estimated by optimization of parameters using by adaptive random search method and sensitivity analysis with respect to design variables. The engine performance model was evaluated to be properly constructed through the comparison of result of engine performance analysis and engine deck data.
2 citations
Patent•
BMW1
TL;DR: The current generation device has a fuel cell unit (1,1a,1b) with one or more solid oxide fuel cells, a reformer unit (6,6a,6b) and an after-burner (14), with the fuel cells and the reformer units connected in alternation and the last fuel cell units coupled to the afterburner as discussed by the authors.
Abstract: The current generation device has a fuel cell unit (1,1a,1b) with one or more solid oxide fuel cells, a reformer unit (6,6a,6b) and an afterburner (14), with the fuel cells and the reformer units connected in alternation and the last fuel cell unit coupled to the afterburner .The reformer units may be fully or partially integrated in the fuel cells.
2 citations
Patent•
29 Mar 2019
TL;DR: In this paper, a cavity trapped vortex and rectifying support plate combined type integrated afterburner was used to improve the combustion efficiency and stability, and the ignited high-temperature air and air in the outer duct were promoted to mix, and played a role in rectification and stabilization of combustion.
Abstract: The invention provides a cavity trapped vortex and rectifying support plate combined type integrated afterburner. The ignition stability can be improved effectively, and the swirling intensity of a backflow area and the fuel atomization effect are improved, so that the combustion efficiency and stability are improved. A rectifying support plate flame stabilizer is combined with cavity trapped vortex; on one hand, air flow of inner and outer ducts enters a cavity from different positions, and a trapped vortex area is formed; duty-level flame is generated, so that mixed gas of a main flow area is ignited; on the other hand, a stable main backflow area with a certain gas backflow amount and in an appropriate size is formed downstream; and ignited high-temperature air and air in the outer ductare promoted to mix, and play a role in rectification and stabilization of combustion. The integrated afterburner has the advantages that the structural design of a cavity duty stabilizer is added atthe rear edge of the rectifying support plate flame stabilizer on the original basis of the integrated afterburner, and the ignition ability under the rich oil and high altitude conditions can be improved effectively; and the high combustion stability and efficiency are ensured.
2 citations
Patent•
27 Feb 2012
TL;DR: In this article, an engine with pyro composition enclosed in thin-wall tight envelopment is arranged on grid located nearby charge end face and afterburner tube edge is spaced apart from igniter envelopment.
Abstract: FIELD: engines and pumps. ^ SUBSTANCE: proposed engine comprises casing with charge. Igniter with pyro composition enclosed in thin-wall tight envelopment is arranged on grid located nearby charge end face. Pyrocartridge with afterburner tube is arranged in casing cover. Afterburner tube edge is spaced apart from igniter envelopment. Igniter envelopment has cylindrical recess made on the side of afterburner tube and aligned with the latter that feature the following relations of recess height h and diameter D of recess from afterburner tube inner diameter d: denhen2d and 3denDen5d. ^ EFFECT: higher reliability and efficiency. ^ 4 dwg
2 citations
Patent•
05 Apr 1978
TL;DR: In this paper, a three stage catalytic afterburner is used to produce a nearly stoichiometric mixture of air and gas in the three stages of an internal combustion engine, and a relief valve (30) in the secondary air pipe is controlled from the engine suction manifold.
Abstract: The exhaust pipe (5) of an internal combustion engine (1) contains a three stage catalytic afterburner (10a, 10b, 10c). The engine drives a fan (21) which delivers secondary air to the afterburner. A valve (40) in the secondary air pipe is operated by a membrane (41) between two chambers (42, 43). Solenoid valves (44, 45) admit air to and release it from these chambers in a timed sequence so that the air valve opens and shuts periodically. This oscillation controls the amount of air admitted to the afterburner. A relief valve (30) in the secondary air pipe is controlled from the engine suction manifold (4). The volume of secondary air is controlled to maintain a nearly stoichiometric mixture of air and gas in the three stages of the afterburner.
2 citations