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Article
Publication date: 24 February 2020

Yadav Krishna Kumar Rajnath, Akshoy Ranjan Paul and Anuj Jain

The purpose of air-intake duct used in combat aircrafts is to decelerate the inlet flow and concurrently raise the static pressure recovery at the compressor inlet. Because of…

Abstract

Purpose

The purpose of air-intake duct used in combat aircrafts is to decelerate the inlet flow and concurrently raise the static pressure recovery at the compressor inlet. Because of side-slip movement during sharp maneuvers of the aircrafts, the airflows ingested into twin air-intake ducts are not same and symmetric at its two inlets but are asymmetric in nature. The asymmetric inlet flow conditions at the twin air-intakes thus caused instabilities and deteriorated aerodynamic performance of aircraft components such as compressors and other downstream components. This study aims to investigate the flow control in a twin air-intake with asymmetric inflows.

Design/methodology/approach

The continuity and momentum equations are solved with second-order upwind scheme for computing finite-volume method-based unsteady computational fluid dynamics simulation.

Findings

Performance parameters are deteriorated with the increase of inflow asymmetry in the twin air-intake duct. Slotted synthetic jets are used to manage flow separation, thereby increasing aerodynamic performance of the air-intake. A variety of vortical structures are generated from the rectangular slots, convected downstream of the twin air-intake. The use of slotted synthetic jets increases static pressure recovery by 64 per cent whereas reducing total pressure loss coefficient by 63 per cent, distortion coefficient by 58 per cent and swirl coefficient by 55 per cent which is an indicative of better aerodynamic performance of twin air-intake.

Originality/value

The study stresses the need of robust flow control technique to improve the performance of combat air-intake system under extreme maneuvering conditions. The results can be useful in designing air-intake satisfying the stealth features for modern combat aircrafts.

Details

Aircraft Engineering and Aerospace Technology, vol. 92 no. 3
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 1 January 1969

The Aviation Division of the Dunlop Co. Ltd. (Engineering Group) is to install Dynex power units, designed and built by Applied Power (U.K.) Ltd., in the latest design of…

Abstract

The Aviation Division of the Dunlop Co. Ltd. (Engineering Group) is to install Dynex power units, designed and built by Applied Power (U.K.) Ltd., in the latest design of hydraulic production test rigs at the Division's Coventry factory. The company is completely re‐equipping its production test facilities by providing every rig with the higher pressures and flows which future trends in fluid technology will demand, and to ensure that each testing station is capable of handling service fluids currently in use, including kerosene, DTD 585, Skydrol, Lockheed 22 and Oronite.

Details

Aircraft Engineering and Aerospace Technology, vol. 41 no. 1
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 September 1943

THE following description of the fuel supply systems of the BMW 132K and 132N, “Bramo” Fafnir 323 P‐1 and BMW 801 air‐cooled radial engines is based on the following reports…

65

Abstract

THE following description of the fuel supply systems of the BMW 132K and 132N, “Bramo” Fafnir 323 P‐1 and BMW 801 air‐cooled radial engines is based on the following reports supplied by the Ministry of Aircraft Production.

Details

Aircraft Engineering and Aerospace Technology, vol. 15 no. 9
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 October 1943

BMW 801A/1 The engine is a radial, air‐cooled, fourteen‐cylindcr, double‐bank motor of 42 litres capacity, 6–5/1 compression ratio and 156 mm. bore and stroke.

Abstract

BMW 801A/1 The engine is a radial, air‐cooled, fourteen‐cylindcr, double‐bank motor of 42 litres capacity, 6–5/1 compression ratio and 156 mm. bore and stroke.

Details

Aircraft Engineering and Aerospace Technology, vol. 15 no. 10
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 13 February 2009

The papers aims to look at the Bloodhound SSC project, a new British‐based endeavour to create a car that can set a new record of over 1,000 mph, by 2011.

515

Abstract

Purpose

The papers aims to look at the Bloodhound SSC project, a new British‐based endeavour to create a car that can set a new record of over 1,000 mph, by 2011.

Design/methodology/approach

The paper looks at the Bloodhound SSC project, an inspirational project that has ambitions to help overcome the skills shortage in engineering and science that is facing the country.

Findings

The Bloodhound SSC project is the new British‐based endeavour to create a car that can set a new record of over 1,000 mph, by 2011. However, far from being simply a “boy's own” undertaking that is aimed at developing the world's fastest car, the project also has far more wide‐ranging, and important, goals. First, in developing such a ground‐breaking vehicle the intention is to drive through tangible scientific and technological discoveries that will have wider commercial opportunities. But, even more importantly, this inspirational project has ambitions to help overcome the skills shortage in engineering and science that is facing the country. By creating a ground swell of interest and passion among British school children through a dedicated educational programme, it is hoped that the project will ultimately help encourage today's children to become the next generation of British scientists and engineers. The new British‐based endeavour to beat the existing world land speed record is far from being simply a “boy's own” undertaking that is aimed at just creating prestige for the team and the country, if the attempt succeeds. While building a car that can set a new record of over 1000 mph, by 2011, the Bloodhound SSC team is also looking to innovatively deliver against two other major goals.

Originality/value

The paper examines innovations in engineering that could have a positive effect on skills shortages engineering and science that is facing the UK.

Details

Strategic Direction, vol. 25 no. 3
Type: Research Article
ISSN: 0258-0543

Keywords

Article
Publication date: 1 June 1956

Under this heading are published regularly abstracts of all Reports and Memoranda of the Aeronautical Research Council, Reports and Technical Memoranda of the United States…

Abstract

Under this heading are published regularly abstracts of all Reports and Memoranda of the Aeronautical Research Council, Reports and Technical Memoranda of the United States National Advisory Committee for Aeronautics and publications of other similar Research Bodies as issued.

Details

Aircraft Engineering and Aerospace Technology, vol. 28 no. 6
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 May 1956

Under this heading are published regularly abstracts of all Reports and Memoranda of the Aeronautical Research Council, Reports and Technical Memoranda of the United States…

Abstract

Under this heading are published regularly abstracts of all Reports and Memoranda of the Aeronautical Research Council, Reports and Technical Memoranda of the United States National Advisory Committee for Aeronautics and publications of other similar Research Bodies as issued.

Details

Aircraft Engineering and Aerospace Technology, vol. 28 no. 5
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 October 1954

B.R. Noton

EACH September the eyes of the aeronautical World turn towards the S.B.A.C. Air Display and Exhibition with interest unequalled by any other event. It is fitting that the Display…

Abstract

EACH September the eyes of the aeronautical World turn towards the S.B.A.C. Air Display and Exhibition with interest unequalled by any other event. It is fitting that the Display is now held each year at the airfield of the Royal Aircraft Establishment, one of the world's most prominent aeronautical research centres. This interest becomes increasingly keen too, as the preview day comes closer, because new prototypes of unorthodox designs often appear a short time before the Show to illustrate the results of years of careful planning, development and research of the particular company. These designs often mould the path of progress for smaller countries without the economic resources to forge the way ahead alone. Most British citizens are very proud of their country's place in aviation today, both in the military and civil fields. This is understood by most foreigners because it is clear that Britain has won a place in aeronautical development second to none.

Details

Aircraft Engineering and Aerospace Technology, vol. 26 no. 10
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 January 1940

S. Riess

WITH the increasing speed of modern aircraft it becomes pertinent to give some more thought to the correct shaping of carburettor air‐intakes.

Abstract

WITH the increasing speed of modern aircraft it becomes pertinent to give some more thought to the correct shaping of carburettor air‐intakes.

Details

Aircraft Engineering and Aerospace Technology, vol. 12 no. 1
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 May 1970

D.I. Armitage

AS in every section of industry the costs of international airline operations continue to rise at an alarming rate. With the introduction of the wide‐body jet transports and SST…

Abstract

AS in every section of industry the costs of international airline operations continue to rise at an alarming rate. With the introduction of the wide‐body jet transports and SST during the 1970s it will be essential for the operators to reduce the aircraft turnaround to an absolute minimum. Rolls‐Royce and Ultra Electronics Ltd. recognised this need earlier in the electronic system development programme for the Concorde's Olympus 593 powerplant. The engineers concerned with the programme accepted that rapid servicing facilities coupled with maximum ‘go’ capability, were essential requirements if the airlines were to be able to maintain tight operating schedules which will be necessary if Concorde is to be a commercially viable aircraft and not just an expensive prestige flag carrier. Accordingly the design and layout of both the air intake and engine control systems is based on a definite set of maintenance rules which may be summarised as follows:

Details

Aircraft Engineering and Aerospace Technology, vol. 42 no. 5
Type: Research Article
ISSN: 0002-2667

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