2 edition of Numerical investigation of hot gas ingestion by STOVL aircraft found in the catalog.
Numerical investigation of hot gas ingestion by STOVL aircraft
S. P. Vanka
by National Aeronautics and Space Administration, Lewis Research Center, National Technical Information Service, distributor in [Cleveland, Ohio], [Springfield, Va
Written in English
|Series||NASA contractor report -- 4769, NASA contractor report -- NASA CR-4769.|
|Contributions||Lewis Research Center.|
|The Physical Object|
|Pagination||iii, 105 p. :|
|Number of Pages||105|
COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. AN OVERVIEW OF HOT GAS INGESTION RESEARCH AT THE UNIVERSITY OF BATH J.A. Scobie - C.M. Sangan - J.M. Owen - G.D. Lock. Department of Mechanical Engineering, University of Bath, Bath, United Kingdom, BA2 7AY. @ ABSTRACT. Rim seals are fitted in gas turbines at the periphery of the wheel-space formed between rotorFile Size: 1MB.
Multi-Disciplinary Design Investigation of Propulsive Fuselage Aircraft Concepts 3 taken as being removed from the aircraft drag balance, D ing, is described using the ingested drag ratio (cf. Steiner et al., ), N t ing F D, E (2) where F N,t represents the total net thrust required for aircraft operation. The assessment of vehicular Cited by: 9. Publications; Print. Refine List. Influence of rim seal geometry on hot gas ingestion into the upstream cavity of an axial turbine stage. Bohn, D. Rudzinski, B. 3D numerical investigation of secondary flow phenomena in the cooling jets in case of a leading edge ejection and their influence on the thermal load.
Hot gas ingestion, the entrainment of heated engine exhaust into the inlet flow field, is the key development issue for advanced short takeoff and vertical landing aircraft. A percent scale short takeoff and vertical landing (STOVL) hot gas ingestion model was designed and built by McDonnell Douglas Corporation (MCAIR) and tested in the. A successful methodology was developed at Boeing Company to investigate hot-gas ingestion in vertical take-off and landing aircraft. It involves sub-scale model testing using specialized test facilities and test techniques. The baseline characteristics of hot-gas ingestion Cited by: 1.
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NASA grant NAG, "Numerical Investigation of Hot Gas Ingestion by STOVL Aircraft" during the period of April to April The effort involved the development of multigrid based algorithms and computer programs for the calculation of the flow and temperature fields. Hot gas ingestion can cause significant problems for a STOVL (Short Take-Off, Vertical Landing) aircraft including reduced thrust and compressor stalls.
These problems involve many hazards for the pilots including very hard landings. During the design of a STOVL aircraft, hot gasFile Size: 7MB. Numerical investigation of hot gas ingestion by STOVL aircraft: prepared under grant NAG Description This report compiles the various research activities conducted under the auspices of the NASA Grant NAG, "Numerical Investigation of Hot Gas Ingestion by STOVL Aircraft" during the period of April to April This report compiles the various research activities conducted under the auspices of the NASA Grant NAG, "Numerical Investigation of Hot Gas Ingestion by STOVL Aircraft" during the period of April to April Author: S.
Vanka. This sealing is required to avoid occurrence of hot gas ingestion into the rotor-stator cavities. Due to a rapid decrease of turbine disc life at higher temperatures, such ingestion would present a hazard to the integrity of the discs and subsequently to the safety of the by: 5.
Hot Gas Ingestion (HGI) can be a problematic feature of STOVL aircraft during the descent phase of landing, or while on the ground. The hot exhaust gases from the downwards pointing nozzles can be re-ingested into the engine intakes, causing power degradation or reduced engine surge by: 2.
1 January | International Journal for Numerical Methods in Fluids, Vol. 33, No. 4 Calculations of hot gas ingestion for a STOVL aircraft model D. Fricker,Cited by: 6. A comprehensive wind tunnel test program was conducted to evaluate control of Hot Gas Ingestion (HGI) on a percent scale model of the McDonnell Aircraft Company model.
Hot gas ingestion (HGI) can be a problematic feature of short take-off vertical landing (STOVL) aircraft during the descent phase of landing, or while on the ground. An experimental investigation was conducted to determine the causes of hot gas ingestion of engine inlets in STOVL and V/STOVL aircraft in ground effect.
Marker nephelometry was used to establish the interactions between the jets, forward velocity, and ground for a typical aircraft model configuration. The aircraft test model consisted of a two inlet configuration with four low subsonic Author: Roderick J. Maclean.
The second mechanism, near field ingestion, has a much greater impact on hot gas ingestion compared to the first, because it directly affected the lift nozzle exits into the surrounding area of the intake, being that when exits multiple impinging jets, its impact on the ground plane create a fan shape up wash fountain beneath the Size: 4MB.
The Influence of Ground Boundary Layer on Hot Gas Ingestion Characteristics Peter Curtis IPLC Hot Gas Ingestion • Wednesday, 06 November • hrs. Ingestion of hot exhaust gases by the engines of Short Take-off and Vertical Landing (STOVL) aircraft has been an important research problem for several years.
The hot gas environment around STOVL aircraft is three-dimensional and by: 5. An experimental investigation was conducted to determine the causes of hot gas ingestion of engine inlets in STOVL and V/STOVL aircraft in ground effect.
Marker nephelometry was used to establish the interactions between the jets, forward velocity, and ground for a typical aircraft model : Roderick J. Maclean. Vanka, Surya Pratap “Hot Gas Environment Around STOVL Aircraft in Ground Proximity Part 2, Numerical Study,” AIAA Journal of Aircraft, and S.
Vanka, “Calculations of Hot Gas Ingestion for a STOVL Aircraft Model,” Journal of Aircraft, ; also presented at the 30th Aerospace Sciences Meeting File Size: KB. Full text of "Criteria for design of integrated flight/propulsion control systems for STOVL fighter aircraft" See other formats NASA Technical Paper Criteria for Design of Integrated Flight/Propulsion Control Systems for STO VL Fighter Aircraft James A.
Franklin Ames Research Center, Moffett Field, California NASA National Aeronautics and Space Administration Ames Research Center. vortex has shown that periodically fluid is shed upwards, in the case of vertical take-off aircraft, toward the engine intake [Kuhn (), Behrouzi and McGuirk ()].
This can cause hot gas ingestion (HGI), resulting in a loss of thrust and, in severe cases, causes the compressor to surge producing a total loss of power and vertical lift.
Figure 2 shows the centreline mean and rms axial velocity as a function of distance from the nozzle exit plane, z′ (z′ = h − z, where z is the ground-normal coordinate) for NPRs of two, three and four.
The plots are superimposed onto time-averaged schlieren images of the experiment to the same scale. Spatial correlation of the LDV data with the schlieren images is very by: 5.
This paper aims to demonstrate the viability of using the large eddy simulation (LES) CFD methodology to model a representative, complete STOVL aircraft geometry at touch down. The flowfield beneath such a jet-borne vertical landing aircraft is inherently unsteady.
Richardson, GA and Dawes, WN and Savill, AM () CFD analysis of hot gas ingestion mechanisms for the vertical descent phase of a Harrier aircraft. In: ASME Gas Turbine Expo Power for Land, Sea and Air, toBarcelona, Spain. Dawes, WN () Eliminating serial bottlenecks not just in the flow solving but also in mesh.Effect of non-equilibrium homogeneous condensation on the self-induced flow oscillation of supersonic impinging jets severe ground erosion and hot gas ingestion.
To control the flow it is needed to clarify the characteristics and mechanism of oscillation. (STOVL) aircraft where the exhaust jet is deflected downwards by a wing with Cited by: Behrouzi, P and McGuirk, JJ () Experimental Data for Validation of the Intake Ingestion Process in STOVL Aircraft, Journal of Flow Turbulence and Combustion, 64(4), pp, ISSN: Behrouzi, P and McGuirk, JJ () Particle Image Velocimetry for Intake Ingestion in Short Take-off and Landing Aircraft, AIAA Journal of Aircraft.