Results 61 to 70 of about 2,586 (182)
Damage and Failure of Aeroengine Blades Under Small UAV Impacts
International Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.Unmanned aerial vehicles (UAVs) may collide with vulnerable parts of other aircrafts, such as engine blades, causing accidents. The research on small UAV impact is limited. Besides, UAV impact with propeller and rotor blades is poorly understood. In this paper, a finite element (FE) model of a UAV with a weight of 4.78 kg, turbofan blades, propeller ...
Zhibin Wu +4 more
wiley +1 more source
CENTRIFUGAL COMPRESSOR HEAD CHARACTERISTIC OF A MICRO TURBOJET ENGINE BASED ON NUMERICAL SIMULATION
Perm National Research Polytechnic University Aerospace Engineering Bulletin, 2020 Shown the possibility of using the standard ANSYS CFX hydrodynamic software package for calculating the gasdynamic characteristics of the centrifugal compressor impeller of micro turbojet engines with different options for profiling blades which based on physical and numerical modeling.
Bestoon Abdullah +2 more
openaire +1 more source
Experimental study of ceramic coated tip seals for turbojet engines [PDF]
Ceramic gas-path seals were fabricated and successfully operated over 1000 cycles from flight idle to maximum power in a small turboshaft engine. The seals were fabricated by plasma spraying zirconia over a NiCoCrAlX bond boat on the Haynes 25 substrate.
Biesiadny, T. J. +5 more
core +1 more source
Summary of NASA research on thermal-barrier coatings [PDF]
A durable, two-layer, plasma-sprayed coating consisting of a ceramic layer over a metallic layer was developed that has the potential of insulating hot engine parts and thereby reducing metal temperatures and coolant flow requirements and/or permitting ...
Liebert, C. H. +2 more
core +2 more sources
A generalized computer code for developing dynamic gas turbine engine models (DIGTEM) [PDF]
This paper describes DIGTEM (digital turbofan engine model), a computer program that simulates two spool, two stream (turbofan) engines. DIGTEM was developed to support the development of a real time multiprocessor based engine simulator being designed ...
Daniele, C. J.
core +1 more source
Microprocessor-based multichannel flutter monitor using dynamic strain gage signals [PDF]
Two microprocessor-based multichannel monitors for monitoring strain gage signals during aerodynamic instability (flutter) testing in production type turbojet engines were described. One system monitors strain gage signals in the time domain and gives an
Smalley, R. R.
core +1 more source
MachinesFrom advanced research platforms to Unmanned Aerial Vehicles (UAVs), Micro Turbojet Engines (MTEs) have grown to be essential parts in many different kinds of applications.
Ahmed M. Shehata, Marco P. Schoen
doaj +1 more source
NASA thermal barrier coatings: Summary and update [PDF]
A durable, two-layer, plasma-sprayed coating consisting of a ceramic layer over a metallic layer was developed that has the potential of insulating hot engine parts and thereby reducing metal temperatures and coolant flow requirements and/or permitting ...
Stepka, F. S.
core +1 more source
Electrostatic Signal Self-Adaptive Denoising Method Combined with CEEMDAN and Wavelet Threshold
AerospaceA novel low-pass filtering self-adaptive (LPFA) denoising method combining complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) and a wavelet threshold (WT) strategy is proposed to solve the problem of the aero-engine gas-path ...
Yan Liu +5 more
doaj +1 more source
Measured noise reductions resulting from modified approach procedures for business jet aircraft [PDF]
Five business jet airplanes were flown to determine the noise reductions that result from the use of modified approach procedures. The airplanes tested were a Gulfstream 2, JetStar, Hawker Siddeley 125-400, Sabreliner-60 and LearJet-24.
Burcham, F. W., Jr. +3 more
core +1 more source