Another Look at the Use of Complex Sources for the Generation of Bodies of Revolution in Incompressible Flow

It is shown that by the use of discrete axial distributions of imaginary source discs it is possible to generate a wide class of axisymmetric bodies. In particular thin bodies with bluff ends may be obtained, as well as a variety of other shapes. These results, which were obtained by an "indirect" method, indicate that a re-formulation as a ...

A Ring Source Method for Predicting the Aerodynamic Characteristics of Bodies of Revolution

A method is presented for determining the potential flow around bodies of revolution at incidence and yaw in uniform flow, and in curvilinear flow. This method utilises the ring source method of Hess and Smith (Ref.l) and gives substantial advantage over existing techniques. When compared with the method of Petrie (Ref. 3 and 4), in a typical...

The Subsonic Aerodynamic Characteristics of a Body of Revolution: A Revised Experiment

This report, which is a natural sequel to Ref.3, presents the results obtained from a series of wind tunnel tests on an axi-symmetric body. These tests were conducted in a subsonic tunnel at a nominal Reynolds number of 580000 and measured the distribution of pressure on the body when set at a range of incidences from -2 degrees to 5 degrees....

Evolution of a Heave Control System for an Amphibious Hovercraft

A heave control system for amphibious hovercraft has been designed and tested. The central element in the system being an axial flow, lift-fan whose blade angles are continuously varied by means of feedback signals from a pressure transducer located in the front end of the hovercraft cushion and from an accelerometer measuring the heave...

Bodies in Compressible Flow: The Use of Axial Singularity Distributions

A study has been made of techniques that could be used to extend axial singularity methods for incompressible flow, to deal with compressibility effects. In particular the accuracy of common linearisation methods has been investigated, together with methods for the iterative solution of the full potential equation using distributions of sources...

The Response of a Second-Order, Nonlinear, System to a Step-Function Disturbance

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

An extended class of subharmonic solutions to Duffing's equation

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

A new class of subharmonic solutions to Duffing's equations

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

Studies in stability and control analysis of airframes having nonlinear aerodynamic characteristics

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

Stability of periodic solutions of a nonlinear differential equation arising in servomechanism theory

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

Exact subharmonic oscillations

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

A class of nonlinear differential equations with exact solutions

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

Stability of the periodic solutions to Duffing's equation and other nonlinear equations of second-order

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

The stability of the short-period motion of an airframe having non-linear aerodynamic characteristics in pitch and subject to a step-function elevator deflection

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

The stability of the short-period motion of an airframe having non-linear aerodynamic characteristics subject to a sinusoidal elevator oscillation

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.