Name: An Investigation of Starting Techniques for Inward Turning Inlets at Flight Speeds Below the On-Design Mach Number (en Inglés)
Price: 252.56 PEN
Availability: InStock
Author: Mack, John D.
ISBN: 9781288291861

portada An Investigation of Starting Techniques for Inward Turning Inlets at Flight Speeds Below the On-Design Mach Number (en Inglés)

Formato

Libro Físico

Autor

John D. Mack

Editorial

Biblioscholar

Idioma

Inglés

N° páginas

Encuadernación

Tapa Blanda

Dimensiones

24.6 x 18.9 x 0.4 cm

Peso

0.17 kg.

ISBN13

9781288291861

Categorías

Educación

An Investigation of Starting Techniques for Inward Turning Inlets at Flight Speeds Below the On-Design Mach Number (en Inglés)

John D. Mack (Autor) · Biblioscholar · Tapa Blanda

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Reseña del libro "An Investigation of Starting Techniques for Inward Turning Inlets at Flight Speeds Below the On-Design Mach Number (en Inglés)"

The purpose of this study was to create and investigate starting techniques aimed at allowing complex, three dimensional inward turning inlets to start by swallowing the shock wave associated with un-started inlets. The designed techniques were rooted in supersonic diffuser theory and the Kantrowitz limit, and the techniques attempted to alleviate the over contraction that occurs in inward turning inlets at flight speeds below the on-design Mach number. Five cases, three geometries at two flow conditions, and the base non-modified inlet at the two different flow conditions were generated and all were numerically simulated using a commercially produced numerical solver, CFD++. The simulations were computed using the inviscid Navier-Stokes/Euler equations in a steady state analysis to generate the shock wave, followed by a transient analysis to allow the shock to move in time. The results of the investigation show that all five cases proved to be sub-optimal as none were able to successfully swallow the shock during the transient simulation. However, the results from this analysis indicate that the slit case, designs that extended the initial spill areas of the inlet, appear to hold the most potential in the creation of a successful starting technique. The slit case holds the most potential because the slit Mach 2.7 case was just as effective as the slot Mach 2.7 case, yet the slit area was half the size as the designed slots. Future research should attempt to characterize the effects of slits at different Mach numbers and at various complexities of inlet and slit geometry.