Results 51 to 60 of about 11,511 (277)

Theoretical investigation of acceleration of a turbojet engine

, 1947
The failure of turbojet aircraft propulsion units to accelerate rapidly to high thrust operation when emergencies arise in slow speed flight has restricted their use in aircraft applications, and has also concentrated considerable attention upon their acceleration characteristics in an effort to produce better results.
Satterfield, Loys Malcolm, Wheatley, John Paul   +1 more
openaire   +3 more sources

Intake System Performance Stability as a Function of Flow Throttling

Energies, 2022
This paper presents a numerical analysis of the stability of the flow parameters along the intake duct of an aircraft jet turbine engine. This problem has been investigated by many research teams and was included in the literature analysis.
Adam Kozakiewicz, Stanisław Kachel, Michał Frant, Maciej Majcher   +3 more
doaj   +1 more source

Oxide‐Based Ceramic Matrix Composites for High‐Temperature Environments: A Review

Advanced Engineering Materials, Volume 27, Issue 7, April 2025.
This review examines oxide‐based ceramic matrix composites, focusing on their processing, composition, and mechanical properties for high‐temperature applications. Key topics include oxidation resistance, failure mechanisms, and corrosion behavior, with insights into their potential use in aerospace, nuclear power, and other high‐performance industries.
Karthikeyan Ramachandran, Joseph C. Bear, Doni Daniel Jayaseelan   +2 more
wiley   +1 more source

Dual cycle aircraft turbine engine [PDF]

, 1977
A method and apparatus are presented for improving operating efficiency over broad ranges of flight conditions and for reducing jet engine noise output in takeoff and landing by controlling the airflow entering and exiting the engines.
Nichols, M. R.
core   +1 more source

Ramjet Compression System for a Hypersonic Air Transportation Vehicle Combined Cycle Engine

Energies, 2018
This report assesses the performance characteristics of a ramjet compression system in the application of a hypersonic vehicle. The vehicle is required to be self-powered and perform a complete flight profile using a combination of turbojet, ramjet and ...
Sasha Veeran, Apostolos Pesyridis, Lionel Ganippa   +2 more
doaj   +1 more source

Performance Assessment of a Centrifugal Pump With Varying Blade Counts and Fluid Viscosities Through Euler Head and Entropy Production Analysis

Engineering Reports, Volume 7, Issue 4, April 2025.
The centrifugal pump achieved optimal performance at lower viscosity with a minimal number of blades, as evidenced by reduced turbulent kinetic energy, leading to minimal energy loss and maximum efficiency, with the best operation observed using water and five blades.
Abubaker A. M. Mohammedali, Adil A. M. Omara, Roua H. A. Mohamed, Hajer G. H. Mohamed, Dafaallah A. A. Mohamed   +4 more
wiley   +1 more source

Recycled tire rubber as reinforcement for erosion‐resistant epoxy composites

Polymer Engineering &Science, Volume 65, Issue 3, Page 1386-1403, March 2025.
Recycled tire rubber as reinforcement for erosion‐resistant epoxy composites. Abstract The aim of the study was to develop environmentally friendly, low‐cost, and highly erosion‐resistant composites using rubber particles recycled from waste tires as reinforcement.
Orkan Baran Korkusuz, Eser Yarar, Tamer Sınmazçelik   +2 more
wiley   +1 more source

Orbiter/launch system [PDF]

, 1981
The system includes reusable turbojet propelled booster vehicles releasably connected to a reusable rocket powered orbit vehicle. The coupled orbiter-booster combination takes off horizontally and ascends to staging altitude and speed under booster power
Jackson, L. R., Martin, J. A., Small, W. J., Weidner, J. P.   +3 more
core   +1 more source

Thermodynamic analysis of supercritical carbon dioxide cycle using waste heat of V18 MAN 51/60DF engine

Engineering Reports, Volume 7, Issue 1, January 2025.
Integration of the micro S‐CO2 cycle with V18 MAN 51/60DF engines in powerships for waste heat recovery enhances energy efficiency and sustainability. The system utilizes 374.4 kW of waste heat, achieving 21.8% energy efficiency and 9.7% exergy efficiency, with a net work output of 54.11 kW.
Mehmet Erhan Şahin, Ahmet Elbir, Arif Emre Özgür   +2 more
wiley   +1 more source

A Theoretical and Experimental Investigation of the Effects of Inverted Wings Modifications on the Stability and Aerodynamic Performance of a Sedan Car at Cornering

Engineering Reports, Volume 7, Issue 1, January 2025.
ABSTRACT This research examines the impact of cornering on the aerodynamic forces and stability of a Nissan Versa (Almera) passenger sedan car by introducing novel modifications. These modifications included single inverted wings with end plates as a front spoiler, double‐element inverted wings with end plates as a rear spoiler, and incorporating the ...
Mustafa Sabeeh Abood, IhsanYahya Hussain, Anmar Hamid Ali   +2 more
wiley   +1 more source