Journal ArticleDOI
Aerothermodynamics of a Simple Resonance Tube
TLDR
In this article, an experimental investigation of a simple resonance ignition tube has been conducted, and strong resonance was found when the leading edge of the resonance tube was located within the third compression cell of the underexpanded jet.Abstract:
An experimental investigation of a simple resonance ignition tube has been conducted. The leading edge of the resonance tube was blunt in order to simulate the geometry of proposed rocket ignition systems. The jetstagnation pressure, the nozzle/resonance-tube separation distance, and the resonance-tube length were varied systematically. Strong resonance was found to occur when the leading edge of the resonance tube was located within the third compression cell of the underexpanded jet. High-speed motion pictures showed a significant upstream propagation of disturbances from the resonance tube to the nozzle. These results will be useful in determining the feasibility of using resonance-tube ignition systems for both liquidand solid-propellant rocket engines.read more
Citations
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Journal ArticleDOI
Proper definition of curvature in nonlinear beam kinematics
TL;DR: In this article, it was shown that Hartmann-Sprenger tube with a logarithmic spiral profile achieves a significantly higher base temperature than a 10deg tapered tube or a rectangular tube of comparable length.
Journal ArticleDOI
Thermal performance of a logarithmic-spiral resonance tube
TL;DR: Les mesures au thermocouple montrent qu'un tube de Hartmann-Sprenger a profil en spirale logarithmique donne une temperature de base bien plus grande qu'one tube conique a 10° ou qu'unité rectangulaire de longueur comparable as discussed by the authors.
Journal ArticleDOI
Thermodynamic Characteristics of a Blunt Two-Dimensional Resonance Tube
TL;DR: In this article, the leading edge of a two-dimensional resonance tube was modeled in order to simulate the geometric configuration of proposed rocket ignition systems, and the properties of the fluid near the endwall were determined for a range of jet stagnation pressures, nozzle-resonance tube separation distances, and resonance tube lengths.
Journal ArticleDOI
Aerothermodynamic Characteristics of a Resonance Tube Driven by a Subsonic Jet
References
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Journal ArticleDOI
On a New Method for the Generation of Sound-Waves
TL;DR: In this article, it was found that the intervals of instability referred to above can be used for the generation of sound, and a simple cylindrical resonator is placed with one end in an interval of instability, except in certain positions when overtones may be present.
Journal ArticleDOI
LXXVII. On the production of acoustic waves by means of an air-jet of a velocity exceeding that of sound
Journal ArticleDOI
Jet-Driven Resonance Tube
TL;DR: In this paper, the internal flow of the resonance tube is calculated by using simple boundary conditions, such calculation showing good agreement with experiment. But the trapped indigenous fluid is maximally compressed to 30% of the tube length.
Journal ArticleDOI
Research on the Acoustic Air‐Jet Generator: A New Development
E. Brun,R. M. G. Boucher +1 more
TL;DR: In this article, the Hartmann air-jet ultrasonic generator has been reviewed critically, and modifications are described which substantially increase the efficiency and available power output of the original device, and experimental results are presented in confirmation of the theoretical analysis.