Name: Model for Vortex Ring State Influence on Rotorcraft Flight Dynamics (en Inglés)
Price: 36.83 USD
Availability: InStock
Author: Nasa Technical Reports Server (Ntrs) ; Johnson, Wayne
ISBN: 9781287237013

portada Model for Vortex Ring State Influence on Rotorcraft Flight Dynamics (en Inglés)

Model for Vortex Ring State Influence on Rotorcraft Flight Dynamics (en Inglés)

Formato

Libro Físico

Autor

Wayne Johnson

Nasa Technical Reports Server (Ntrs)

Editorial

Bibliogov

Idioma

Inglés

N° páginas

Encuadernación

Tapa Blanda

Dimensiones

24.6 x 18.9 x 0.4 cm

Peso

0.16 kg.

ISBN13

9781287237013

Categorías

Política y gobierno

Model for Vortex Ring State Influence on Rotorcraft Flight Dynamics (en Inglés)

Wayne Johnson (Autor) · Nasa Technical Reports Server (Ntrs) (Autor) · Bibliogov · Tapa Blanda

Libro Nuevo Importado

Envío: 20 a 27 días háb.

$ 61.39$ 36.83

-40%

Libro UsadoBuen Estado Importado

Envío: 13 a 19 días háb.

$ 28.03

Costos de importación incluídos en el precio ✅

Libro Nuevo

Quedan más de 100 unidades

$ 36.83

Llega entre el 09 Sep y el 22 Sep a Quito, Pichincha. Seleccionar ubicación

Agregar a lista de deseos

Reseña del libro "Model for Vortex Ring State Influence on Rotorcraft Flight Dynamics (en Inglés)"

The influence of vortex ring state (VRS) on rotorcraft flight dynamics is investigated, specifically the vertical velocity drop of helicopters and the roll-off of tiltrotors encountering VRS. The available wind tunnel and flight test data for rotors in vortex ring state are reviewed. Test data for axial flow, non-axial flow, two rotors, unsteadiness, and vortex ring state boundaries are described and discussed. Based on the available measured data, a VRS model is developed. The VRS model is a parametric extension of momentum theory for calculation of the mean inflow of a rotor, hence suitable for simple calculations and real-time simulations. This inflow model is primarily defined in terms of the stability boundary of the aircraft motion. Calculations of helicopter response during VRS encounter were performed, and good correlation is shown with the vertical velocity drop measured in flight tests. Calculations of tiltrotor response during VRS encounter were performed, showing the roll-off behavior characteristic of tiltrotors. Hence it is possible, using a model of the mean inflow of an isolated rotor, to explain the basic behavior of both helicopters and tiltrotors in vortex ring state.