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Journal articles on the topic 'Propeller 1045'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Markovska, Lubov, Oleksii Makovii, and Kateryna Balalaieva. "VERIFICATION OF THE TURBULENCE MODEL IN THE SIMULATION OF THE FLOW AROUND THE PROPELLER OF A BIPLANE." Annali d'Italia 64 (February 27, 2025): 64–74. https://doi.org/10.5281/zenodo.14937530.

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The paper presents the results of a physical and numerical experiment to measure the thrust generated by a UAV propeller. The analysis of the results shows that the discrepancy between the results of the physical and numerical experiments ranges from 1 to 12%

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Yamish Singh, Rajanarasimha Sangam, and Abhijeet Karmarkar. "Assembly and Programming of Hexacopter Drone for Surveillance and Medical Kit Delivery Purposes." International Research Journal on Advanced Engineering Hub (IRJAEH) 2, no. 06 (2024): 1794–803. http://dx.doi.org/10.47392/irjaeh.2024.0246.

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The project aims to assemble and program a hexacopter drone that can serve the purpose of surveillance in terrains and the delivery of medical kits in remote locations autonomously. Delivery of medical kits using drone technology resolves traffic issues faced by the ambulance during medical emergencies on the other hand drone technology also helps with surveillance in aerial monitoring, military, and agriculture. This Hexacopter drone is assembled by motors, 1045 propellers, Pixhawk flight controller, Electronic Speed Controller [ESC], S550 Frame, GPS module, 12 channel receiver, and transmitt

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Saputra, Dwiki Agung, and Jojo Sumarjo. "Perencanaan Ulang Propeller Shaft pada Mobil Toyota Kijang Super 1500cc Tahun 1990." Volume 23, Issue 2 32, no. 2 (2021): 115–21. http://dx.doi.org/10.23969/infomatek.v23i2.4376.

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Mobil merupakan salah satu jenis kendaraan pribadi yang biasa digunakan dalam kehidupan sehari-hari. Kendaraan dapat berjalan/bergerak karena ada sistem yang memindahkan tenaga/momen/putaran dari mesin ke roda. Jenis dan merk tersebut juga banyak, salah satunya yaitu Kijang Super 1500cc dari Toyota. Mobil jenis ini memiliki komponen penting di antaranya body (bodi), machine (mesin), suspension (suspensi), electrical (kelistrikan), wheel (roda), chasis (rangka). Rangka merupakan salah suatu bagian penting dalam kendaraan. Komponen rangka sendiri terdiri dari flange yoke, propeller shaft, univer

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Indreswari, Suroso, and Irmawan Erwhin. "Analysis of UAV multicopter of air photography in New Yogyakarta International Airports." TELKOMNIKA Telecommunication, Computing, Electronics and Control 17, no. 1 (2019): 521–28. https://doi.org/10.12928/TELKOMNIKA.v17i1.9255.

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The higher the quality of the drone, the longer the drone will fly and the better the quality of the drone's photography. Survey of research location in Glagah Indah Beach, preparation of drone at ground, we plan the height of flying drones, then testing drone at ground, we measure camera calibration, and then result capture in the air and images in the air. Vehicle specifications are as follows: Frame: F450; Flight Controller: DJI Naza M-Lite; Propeller: 1045 Prop; motorbike: brushless sunnsky 980 kVa; ESC: Skywalker 40 Ampere 3s; Battery: Ace 3s Gens 5000 mAH; Remote: Turnigy 9XR with Fr

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Tumur-Ochir, Erdenebat, Erdenebat Batzorigt, and Ganbat Danaa. "An Analysis of Increasing Thrust of an Air Propeller Through Additional Lift Surface." Proceedings of Higher Educational Institutions. Маchine Building, no. 12 (717) (December 2019): 87–93. http://dx.doi.org/10.18698/0536-1044-2019-12-87-93.

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Air propellers used in small scale unmanned aircraft operate at low Reynolds numbers. The aerody-namic force occurring on the blade when the air propeller is in operation is of variable nature. It is observed that for Reynold numbers below 5⋅105 flow separation can occur on some sections of the propeller surface. To deal with the problem, increase the lift on the blade and therefore, reduce the turbulence boundary level, a new design called bi-blade propeller is developed and patented. This design features an additional blade above the main one. Using ANSYS Fluent, samples of the bi-blade prop

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6

Suroso, Indreswari. "Analysis Of Mapping Multicopter Drones In The Entrance Area Of Prospective New Airports In Congot, Temon, Kulonprogo, Yogyakarta." Journal of Applied Geospatial Information 2, no. 2 (2019): 130–34. http://dx.doi.org/10.30871/jagi.v2i2.952.

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This research use multicopter drone. This mapping was carried out at the entrance area of the prospective new airport precisely at the Congot beach area, Temon district, Kulonprogo district with a multicopter drone. This drone is capable of recording an altitude of 100 meters above ground level and can photograph an area of 1.5 km. This study used a drone type multicopter The vehicle specifications are as follows: Frame: F450; Flight Controller: DJI Naza M-Lite; Propeller: 1045 Prop; motorbike: brushless sunnsky 980 kVa; ESC: Skywalker 40 Ampere 3s; Battery: Ace 3s Gens 5000mAH; Remote: Turnig

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Suroso, Indreswari. "Analisis Foto Udara dengan Multicopter di Daerah Penghasil Pasir Besi Karangwuni, Temon, Kulon Progo." Rekam 16, no. 1 (2020): 29–35. http://dx.doi.org/10.24821/rekam.v16i1.3474.

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Aerial Photo Analysis Using Multicopters in the Iron-Sand Producing Area in Karangwuni, Temon, Kulon Progo. This research was conducted in areas that have the potential for iron-sand, which is in Karangwuni village, Temon Subdistrict, Kulon Progo regency. The aim of this research is to examine the surface of the largest iron-sand producing areas in Kulon Progo. The specifications of the drones used in this research are as follows: frame :F450Flight Control: DJI Naza M-Lite; Propeller: 1045 Prop; Motorcycle: brushless sunnsky 980 kVa; ESC: Skywalker 40 Ampere 3s; Battery: Ace 3s Gens 5000mAH; R

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8

Li, Yong Xian, Wen Qiong Zhang, and Song Ping Chen. "Reliability Optimization Design of Automobile Propeller Shaft." Advanced Materials Research 1049-1050 (October 2014): 842–45. http://dx.doi.org/10.4028/www.scientific.net/amr.1049-1050.842.

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Large sag due to heavy weight of the propeller shaft is a major cause of rotating vibration, so that to use the hollow shaft is an effective way to reduce the weight. Many scholars and engineers ignored that the outer and inner diameter are discrete and integer variables in optimization design of the propeller shaft. The practicability of an optimal solution is affected by decimal value of the diameter. A practical reliability optimization model with discrete and integer variable of the propeller shaft is proposed, and “Solver” in Microsoft Excel is used to seek the solution of optimization de

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9

Neskoromnyy, Е. V., and D. S. Markov. "Methodology for Determining the Survivability and Resistance of Aircraft Propellers to the Impact of Foreign Objects." Proceedings of Higher Educational Institutions. Маchine Building, no. 10 (715) (October 2019): 93–102. http://dx.doi.org/10.18698/0536-1044-2019-10-93-102.

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The authors propose a technique for determining the survivability and resistance of the blades to impact by foreign objects located on the surface of the airfield pavement, using a set of mathematical models and experimental plants and considering the data on the layout and design of the aircraft and its propulsion system with a propeller. An example of the technique’s application to a small-sized aircraft with a propulsion system with a pushing propeller is considered. The results of theoretical studies on determining the boundaries and parameters of the impact of foreign objects with the pro

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10

Chandraker, Akhilesh, VM Victor, RK Naik, and AK Dave. "Battery powered self-propelled sowing machines: A review." International Journal of Advanced Biochemistry Research 8, no. 4S (2024): 521–24. http://dx.doi.org/10.33545/26174693.2024.v8.i4sg.1045.

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11

Brice, Nabil, Silvia Zane, Roberto Turolla, and Kinwah Wu. "Super-eddington emission from accreting, highly magnetized neutron stars with a multipolar magnetic field." Monthly Notices of the Royal Astronomical Society 504, no. 1 (2021): 701–15. http://dx.doi.org/10.1093/mnras/stab915.

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ABSTRACT Pulsating ultraluminous X-ray sources (PULXs) are characterized by an extremely large luminosity (&gt;1040 erg s−1). While there is a general consensus that they host an accreting, magnetized neutron star (NS), the problem of how to produce luminosities &gt;100 times the Eddington limit, LE, of a solar mass object is still debated. A promising explanation relies on the reduction of the opacities in the presence of a strong magnetic field, which allows for the local flux to be much larger than the Eddington flux. However, avoiding the onset of the propeller effect may be a seri

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Revenko, V. U., A. B. Ivanov, and D. A. Petukhov. "Power balance of all-wheel drive mobile power vehicle." IOP Conference Series: Earth and Environmental Science 1045, no. 1 (2022): 012080. http://dx.doi.org/10.1088/1755-1315/1045/1/012080.

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Abstract The article studies the components of the energy balance of an all-wheel drive self-propelled power vehicle, presents and analyzes the results of a practical determination of all the components of the energy balance within the field experiment.

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NAGASHIMA, Kota, Hironobu UCHIYAMA, Junichi KURATA, Yoshihiro MURAKAMI, and Keizou AWA. "1042 Power Assist of Attendant Propelled Wheelchair Based on the Subjective Exercising Intensity." Proceedings of the JSME annual meeting 2007.6 (2007): 45–46. http://dx.doi.org/10.1299/jsmemecjo.2007.6.0_45.

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14

Wang, Chao, Sheng Huang, Xin Chang, and Miao He. "Applying periodic boundary conditions to predict open water propeller performance." Journal of Marine Science and Application 9, no. 3 (2010): 262–67. http://dx.doi.org/10.1007/s11804-010-1005-6.

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15

Komarov, V. M., and R. V. Polozov. "On the Propeller Structure of Isolated Watson-Crick Base Pairs." Zeitschrift für Naturforschung C 45, no. 9-10 (1990): 1080. http://dx.doi.org/10.1515/znc-1990-9-1025.

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16

Faúndez, Freddy. "Aerodynamic test with self-propelled scale model." Journal of Physics: Conference Series 1043 (June 2018): 012057. http://dx.doi.org/10.1088/1742-6596/1043/1/012057.

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17

Khokhriakova, A. D., and S. B. Popov. "Origin of young accreting neutron stars in high-mass X-ray binaries in supernova remnants." Monthly Notices of the Royal Astronomical Society 511, no. 3 (2022): 4447–53. http://dx.doi.org/10.1093/mnras/stac332.

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ABSTRACT Recently, several accreting neutron stars (NSs) in X-ray binary systems inside supernova remnants have been discovered. They represent a puzzle for the standard magnetorotational evolution of NSs, as their ages (≲105 yr) are much shorter than the expected duration of Ejector and Propeller stages preceding the onset of wind accretion. To explain appearance of such systems, we consider rotational evolution of NSs with early fallback accretion and asymmetry in forward/backward transitions between Ejector and Propeller stages (so-called hysteresis effect proposed by V. Shvartsman in 1970)

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18

N Callender, Mark. "Sound Pressure Level Measurements with Standard and Low Noise Propellers on a Phantom 4 Pro+." Current Trends in Engineering Science (CTES) 2, no. 2 (2022): 1–3. http://dx.doi.org/10.54026/ctes/1015.

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One environmental issue regulated by the FAA is the noise created by aircraft. Federal Aviation Regulation (FAR) Title 14 Part 36 deals specifically with sound pressure levels (SPL) according to aircraft type when the aircraft are in close proximity to the ground. Minimizing aircraft noise helps to maintain positive relationships between the aviation community and the general public. Unmanned aircraft systems (UAS) are a very rapidly growing segment of the aviation industry within the National Airspace System (NAS); however, there is currently no regulation for UAS SPL. The UAS are regulated,

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19

Tian, Fuyang, Kelai Xia, Jin Wang, et al. "Design and experiment of self-propelled straw forage crop harvester." Advances in Mechanical Engineering 13, no. 7 (2021): 168781402110244. http://dx.doi.org/10.1177/16878140211024455.

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The harvesting straw feed crops (silage corn, alfalfa, herbaceous mulberry, etc.) was tedious, high-labor-cost, and large-nutrient-loss. A self-propelled straw forage crop harvester, which could realize the integration of cutting, flattening and modulating, chopping, and throwing straw forage crops, was designed. The cutting angle could freely be adjusted between 0° and 8°. The max rotation speed of the flattening roller could reach 590 r/min and could be adjusted consecutively by the hydraulic control device. To verify the performance of this machine, several harvesting experiments of alfalfa

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20

Nuranto, Awang Rahmadi, Ahmad Jamaludin Fitroh, and Hendri Syamsudin. "Analysis of Aerodynamic Load of LSU-03 (LAPAN Surveillance UAV-03) Propeller." Journal of Physics: Conference Series 1005 (April 2018): 012005. http://dx.doi.org/10.1088/1742-6596/1005/1/012005.

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21

Uwimana, Aline, Eric Legrand, Barbara H. Stokes, et al. "Emergence and clonal expansion of in vitro artemisinin-resistant Plasmodium falciparum kelch13 R561H mutant parasites in Rwanda." Nature Medicine 26, no. 10 (2020): 1602–8. http://dx.doi.org/10.1038/s41591-020-1005-2.

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Abstract Artemisinin resistance (delayed P. falciparum clearance following artemisinin-based combination therapy), is widespread across Southeast Asia but to date has not been reported in Africa1–4. Here we genotyped the P. falciparum K13 (Pfkelch13) propeller domain, mutations in which can mediate artemisinin resistance5,6, in pretreatment samples collected from recent dihydroarteminisin-piperaquine and artemether-lumefantrine efficacy trials in Rwanda7. While cure rates were >95% in both treatment arms, the Pfkelch13 R561H mutation was identified in 19 of 257 (7.4%) patients at Masaka. Ph

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22

Guo, Chun-yu, Wen-ting Hu, and Sheng Huang. "Using RANS to simulate the interaction and overall performance of propellers and rudders with thrust fins." Journal of Marine Science and Application 9, no. 3 (2010): 323–27. http://dx.doi.org/10.1007/s11804-010-1015-4.

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23

Vasilev, Matija, Milan Kalajdžić, and Ines Ivković. "CFD-Powered Ship Trim Optimization: Integrating ANN for User-Friendly Software Tool Development." Journal of Marine Science and Engineering 12, no. 8 (2024): 1265. http://dx.doi.org/10.3390/jmse12081265.

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This study presents a comprehensive approach to trim optimization as an energy efficiency improvement measure, focusing on reducing fuel consumption for one RO-RO car carrier. Utilizing Computational Fluid Dynamics (CFD) software, the methodology incorporates artificial neural networks (ANNs) to develop a mathematical model for estimating key parameters such as the brake power, daily fuel oil consumption (DFOC) and propeller speed. The complex ANN model is then integrated into a user-friendly software tool for practical engineering applications. The research outlines a seven-phase trim optimiz

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24

Hu, Cheng Jun, Yuan Zheng, and Han Bo Zhao. "Periodic Signal Detection in Ship Radiated Noise." Advanced Materials Research 1049-1050 (October 2014): 1577–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1049-1050.1577.

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Periodic signal is abundant in ship radiated noise. Its detection is an important step towards active control of ship’s acoustic signature. Based on power spectrum analysis and DEMON analysis, an approach to detect line spectrum and modulation spectrum of ship radiated noise is proposed. Periodogram method is used for power spectrum estimation. The separation of line and continuous spectrum, false positive removal, and line spectrum merging are conducted to improve the quality of detected characteristic line spectrum. Via DEMON analysis, steady physical characteristics including propeller’s ro

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McLeod, Paul. "Corn Earworm Control on Snap Bean, 1985." Insecticide and Acaricide Tests 11, no. 1 (1986): 107. http://dx.doi.org/10.1093/iat/11.1.107.

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Abstract Snap beans were planted 10 Aug at the Arthur Henderson farm at Lowell, AR. Plots were four 50-ft rows (40-inch spacing) with 5-ft alleys separating plots on the same row. Experimental design was a randomized complete block with 10 treatments replicated 4 times. Sprays were applied with a manually propelled bicycle sprayer when the majority of plants bore 2-inch pods (8 Oct). Final spray volume was 10.5 gal/acre. Insecticide effectiveness was compared 16 Oct by taking 50 sweeps with a 15-inch diameter insect net in the center 2 rows of each plot. Plots were harvested 21 Oct by hand-pic

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Dangiwa, Abubakar Lawal, and B. A. Ndawayo. "THE ROLE OF TRANSPORTATION NETWORK IN THE INTEGRATION OF HAUSA AND YORUBA ETHNIC NATIONALITIES IN FUNTUA TOWN OF KATSINA STATE, NIGERIA." FUDMA JOURNAL OF SCIENCES 6, no. 4 (2022): 54–59. http://dx.doi.org/10.33003/fjs-2022-0604-1043.

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The paper examined the role of transportation network in the integration of Yoruba-Hausa ethnic nationalities in Funtua Town of Katsina State. The study was inspired by agitations being made by some notable Nigerians about the possibilities of disintegration of Nigeria as corporate national entity along the lines of ethnic nationalities. This notion is often propelled by sporadic ethnic and tribal disturbances that occur in the country. However, the cordial relationship that exists in Funtua town between the Yorubas from southwestern axis of Nigeria and the indigenous Hausas cast doubt to such

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27

Feng, Jun, Daili Zhou, Yingxue Lin, Huihui Xiao, He Yan, and Zhigui Xia. "Amplification ofpfmdr1,pfcrt,pvmdr1, and K13 Propeller Polymorphisms Associated with Plasmodium falciparum and Plasmodium vivax Isolates from the China-Myanmar Border." Antimicrobial Agents and Chemotherapy 59, no. 5 (2015): 2554–59. http://dx.doi.org/10.1128/aac.04843-14.

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ABSTRACTMalaria in the China-Myanmar border region is still severe; local transmission of both falciparum and vivax malaria persists, and there is a risk of geographically expanding antimalarial resistance. In this research, thepfmdr1,pfcrt,pvmdr1, and K13-propeller genotypes were determined in 26Plasmodium falciparumand 64Plasmodium vivaxisolates from Yingjiang county of Yunnan province. Thepfmdr1(11.5%),pfcrt(34.6%), andpvmdr1(3.1%) mutations were prevalent at the China-Myanmar border. The indigenous samples exhibited prevalences of 14.3%, 28.6%, and 14.3% forpfmdr1N86Y,pfcrtK76T, andpfcrtM7

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Galinovsky, A. L., A. V. Denisov, E. A. Gavrilova, S. A. Gordeev, S. A. Alshina, and S. A. Eremin. "The Selection of the Reinforcement Scheme for a Parabolic Antenna Made of Composite Materials with an Elliptical Aperture Line." Proceedings of Higher Educational Institutions. Маchine Building, no. 09 (726) (September 2020): 54–68. http://dx.doi.org/10.18698/0536-1044-2020-9-54-68.

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Being prepared foThe problems of designing and calculating reinforced shells of revolution made of composite materials as constituent elements of parabolic antennas with an elliptical aperture line having a focal parameter value of not more than 0.03 m are examined in this paper. The structural layout schemes of reflectors of the parabolic-type mirror spacecraft antennas are reviewed. A technique for designing a bearing frame for reinforcing the reflector shell using numerical analysis based on the finite element method is presented. The technique is based on the assessment of the stiffness pa

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29

Li, Yongcheng, Nan Zhang, Xinyuan Tang, Ziying Pan, and Pengfei Xu. "Numerical Simulation on Self-Propulsion Characteristics of Bionic Flexible Foil Considering Ground Wall Effect." Biomimetics 9, no. 12 (2024): 750. https://doi.org/10.3390/biomimetics9120750.

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In order to figure out the wall effect on the propulsive property of an auto-propelled foil, the commercial open-source code ANSYS Fluent was employed to numerically evaluate the fluid dynamics of flexible foil under various wall distances. A virtual model of NACA0015 foil undergoing travelling wavy motion was adopted, and the research object included 2D and 3D models. To capture the foil’s moving boundary, the dynamic grid technique coupled with the overlapping grid was utilized to realize the foil’s positive deformation and passive forward motion. The ground wall effect on fluid dynamics (th

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SERGEEVA, NATALIA V. "TECHNOLOGICAL ALTERNATIVE FOR POTATO GROWING IN THE MOSCOW REGION." Agricultural engineering, no. 5 (2022): 11–15. http://dx.doi.org/10.26897/2687-1149-2022-5-11-15.

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Due to the need to replace worn-out mechanization tools with more modern high-performance brands, the search for alternative technologies for growing potatoes is rather relevant. Tha author made a comparative analysis of the production efficiency of the ridge-band and ridge technologies of potato cultivation for CJSC Lenin State Farm in the Moscow Region. The area of potato cultivation of the “Pirol” variety was 400 hectares. With the ridge-band technology, the main and pre-sowing tillage was carried out by the MTZ 1025 and K744R1 tractors, while ZA1500 was used for fertilization. The PLN-5-35

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Islam, AKMS, MA Rahman, AKML Rahman, MT Islam, and MI Rahman. "Techno-economic performance of 4-row self-propelled mechanical rice transplanter at farmers field in Bangladesh." Progressive Agriculture 27, no. 3 (2016): 369–82. http://dx.doi.org/10.3329/pa.v27i3.30834.

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Mechanical transplanting is an emerging technology in Bangladesh agriculture. Deadong DP480 rice transplanter was used to conduct the experiment which is imported from South Korea and China. The performance of this machine needs to be thoroughly investigated in local condition. This experiment was conducted in Boro (2015) season in the farmers field at Gosaidanga in Shailkupa upazila under Jhenaidah district and at Rashidpur in Mithapukur upazila under Rangpur district. Two treatments, i.e. T1 = Hand transplanting (HT) and T2 = Mechanical transplanting (MT) were used in the experiment. The ex

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Şahin, Volkan, and Nurten Vardar. "Determination of Wastewater Behavior of Large Passenger Ships Based on Their Main Parameters in the Pre-Design Stage." Journal of Marine Science and Engineering 8, no. 8 (2020): 546. http://dx.doi.org/10.3390/jmse8080546.

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Wastewater formed on ships is divided into blackwater and graywater. While blackwater refers to wastewater from toilets, graywater defines wastewater from sinks, laundry and restaurants. Even though some treatments are applied onboard before discharge, wastewater contains significant amounts of fecal bacteria, heavy metals, etc., in excess of water quality standards. Dilution is a secondary natural treatment in the ship-wake region, which occurs after wastewater discharging. According to the Environmental Protection Agency (EPA), the natural treatment process is quantified by dilution factor,

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Andika, Clensaint, Indreswari Suroso, and Noviana Utami. "KARAKTERISTIK KOMPONEN FUEL NOZZLE GASKET PESAWAT CESSNA GRAND CARAVAN 208B." Teknika STTKD: Jurnal Teknik, Elektronik, Engine 7, no. 2 (2021): 293–98. http://dx.doi.org/10.56521/teknika.v7i2.341.

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Pesawat Cessna Grand Caravan 208B merupakan pesawat angkut ringan bermesin tunggal dengan penggerak propeller atau engine turboprop. Ada banyak komponen yang saling berhubungan pada mesin pesawat, salah satunya adalah fuel nozzle gasket yang berada diantara fuel nozzle dan combustion chamber yang berfungsi untuk menjaga tekanan yang dihasilkan dari ruang bakar agar tidak keluar dari mesin. Tujuan penelitian ini adalah untuk mempelajari karakteristik komponen fuel nozzle gasket pesawat Cessna Grand Carravan 208B yang meliputi 1). Komposisi kimia, 2.) Kekerasan Vickers, 3). Laju keausan, 4). Str

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Mitelea, Ion, Ilare Bordeașu, Daniel Mutașcu, Corneliu Marius Crăciunescu, and Ion Dragoș Uțu. "Surface Integrity of Austenitic Manganese Alloys Hard Layers after Cavitation Erosion." Lubricants 12, no. 10 (2024): 330. http://dx.doi.org/10.3390/lubricants12100330.

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Cavitation erosion, as a mechanical effect of destruction, constitutes a complex and critical problem that affects the safety and efficiency of the functioning of engineering components specific to many fields of work, the most well-known being propellers of ships and maritime and river vessels, seawater desalination systems, offshore oil and gas drilling platforms (including drilling and processing equipment), and the rotors and blades of hydraulic machines. The main objective of the research conducted in this paper is to experimentally investigate the phenomenology of this surface degradatio

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Świetlicki, Aleksander, Mariusz Walczak, and Mirosław Szala. "Corrosion Resistance of Additive Manufactured 17-4Ph Dmls Steel After Heat Treatment and Shot Peening Process." Acta Mechanica et Automatica 19, no. 2 (2025): 205–11. https://doi.org/10.2478/ama-2025-0024.

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Abstract Additively manufactured steel is not free of drawbacks and defects. Such disadvantages include high roughness and lower hardness compared to conventional steel. The 17-4PH steel is a grade designed for precipitation hardening. The application of 17-4PH steel ranges from turbine blades, pumps, valves, and propellers for aerospace, maritime, nuclear power plants, and medical instruments. This grade of steel is often applied where high mechanical performance and good corrosion resistance are required. Considering these factors, it was decided to use a heat treatment designed for conventi

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Schumann, Ulrich, Robert Baumann, Darrel Baumgardner, et al. "Properties of individual contrails: a compilation of observations and some comparisons." Atmospheric Chemistry and Physics 17, no. 1 (2017): 403–38. http://dx.doi.org/10.5194/acp-17-403-2017.

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Abstract. Mean properties of individual contrails are characterized for a wide range of jet aircraft as a function of age during their life cycle from seconds to 11.5 h (7.4–18.7 km altitude, −88 to −31 °C ambient temperature), based on a compilation of about 230 previous in situ and remote sensing measurements. The airborne, satellite, and ground-based observations encompass exhaust contrails from jet aircraft from 1972 onwards, as well as a few older data for propeller aircraft. The contrails are characterized by mean ice particle sizes and concentrations, extinction, ice water content, opti

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Pike, Benjamin C., Kevin J. Shinners, Aaron J. Timm, Josh Friede, and Matthew Francis Digman. "Co-Harvest and Anaerobic Co-Storage of Corn Grain and Stover as Biomass Feedstocks." Journal of the ASABE 66, no. 2 (2023): 423–30. http://dx.doi.org/10.13031/ja.15299.

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Highlights Cutting height and harvest date were used to alter stover moisture content, yield, and composition. Anaerobic co-storage of grain and stover limited losses to less than 6% of dry matter. Extent of fermentation was greater for higher moisture stover than grain, but total acids were less than 5 g kg-1. Reducing the harvester cutter head rotational speed resulted in a greater fraction of whole corn kernels. Abstract. This research investigated the utility of co-harvesting and anaerobic co-storage of corn grain and stover to positively influence their physical and chemical characteristi

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Jariwala, Deep. "(Invited) 2D Materials and III-Nitride Ferroelectrics for AI Hardware." ECS Meeting Abstracts MA2025-01, no. 63 (2025): 3063. https://doi.org/10.1149/ma2025-01633063mtgabs.

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Silicon has been the dominant material for electronic computing for decades and very likely will stay dominant for the foreseeable future. However, it is well-known that Moore’s law that propelled Silicon into this dominant position is long dead. Therefore, a fervent search for (i) new semiconductors that could directly replace silicon or (ii) new architectures with novel materials/devices added onto silicon or (iii) new physics/state-variables or a combination of above has been the subject of much of the electronic materials and devices research of the past 2 decades. The above problem is fur

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Бяков, К. Е., Ки Ан Чан, Ф. Д. Сорокин, and К. Ю. Машков. "All-terrain vehicles with elastic screw propellers." Proceedings of Higher Educational Institutions. Маchine Building, no. 77 (May 2014). http://dx.doi.org/10.18698/0536-1044-2014-5-37-42.

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Zarezadeh, Masoud, Nowrouz Mohammad Nouri, and Reza Madoliat. "Improving hydrodynamic performance of surface piercing propeller through trailing-edge optimization." Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, April 22, 2024. http://dx.doi.org/10.1177/14750902241244417.

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Automated optimization is increasingly used in engineering applications. In this study, RANS-based CFD, the NSGA II algorithm, and Kriging were used to optimize a section of a marine surface piercing Propeller (SPP) set. The hydrodynamic performance of the SPP is also determined using the CFD tool. The optimization process involves the NSGA II algorithm in combination with the Kriging method. The optimized geometry is simulated using the CFD tool. Then, the obtained results are added to the initial population and the optimization is repeated in the next iteration. Thus, fewer simulations were

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Ватулин, Я. С., Д. А. Потахов, and Е. А. Потахов. "Numerical Simulation of Limiting States of Self-Propelled Boom Cranes." Proceedings of Higher Educational Institutions. Маchine Building, no. 697 (April 2018). http://dx.doi.org/10.18698/0536-1044-2018-4-19-27.

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Сорокин, Ф. Д., К. Ю. Машков, К. Е. Бяков, and Ки Ан Чан. "Calculating the stress-strain state of the rubber-cord shell of an elasto-screw propeller." Proceedings of Higher Educational Institutions. Маchine Building, no. 97 (January 2015). http://dx.doi.org/10.18698/0536-1044-2015-1-24-30.

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Pryadkin, Vladimir, and Pavel A. Kolyadin. "Vibration loading of self-propelled sprayer booms on ultra-low pressure tires." Tractors and Agricultural Machinery, February 13, 2024. http://dx.doi.org/10.17816/0321-4443-567796.

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BACKGROUND: The article presents the results of experimental studies of the vibration loading of the booms of a self-propelled sprayer equipped with ultra-low pressure tires 1020x420-18 model Bel-79 when driving through single artificial bumps. Based on the results of the tests, the dependences of the influence of maximum vertical accelerations on the suspension of rods on the speed of movement at different air pressure in the tires and levels of filling the sprayer tank with process liquid were obtained. It has been established that with a decrease in the filling of the tank with process liqu

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De, Kishalay, Fiona A. Daly, and Roberto Soria. "Infrared spectroscopy of SWIFT J0850.8-4219: Identification of the second red supergiant X-ray binary in the Milky Way." Monthly Notices of the Royal Astronomical Society: Letters, November 6, 2023. http://dx.doi.org/10.1093/mnrasl/slad164.

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Abstract High mass X-ray binaries hosting red supergiant (RSG) donors are a rare but crucial phase in massive stellar evolution, with only one source previously known in the Milky Way. In this letter, we present the identification of the second Galactic RSG X-ray binary SWIFT J0850.8-4219. We identify the source 2MASS 08504008-4211514 as the likely infrared counterpart with a chance coincidence probability ≈5 × 10−6. We present a 1.0 − 2.5 μm spectrum of the counterpart, exhibiting features characteristic of late-type stars and an exceptionally strong He I emission line, corroborating the iden

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Chen, Xiaoming, Biao Huang, Haitao Xiao, Lu An, Wenxing Su, and Daojiang Yu. "Application of the Jigsaw Puzzle Flap Based on Freestyle Perforators to Repair Large and Deep Ulcers on the Buttocks." Frontiers in Surgery 9 (April 13, 2022). http://dx.doi.org/10.3389/fsurg.2022.739250.

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BackgroundDecubitus ulcers are common skin injuries in plastic and burn surgery departments, usually occur in patients with a long disease course and poor underlying health. Designing a reconstruction procedure with safety blood supply to a large volume soft tissue and resulting in minimal trauma is a priority for surgeons.MethodsThe free-style perforators on the potential donor sites surrounding the ulcers were detected by Doppler, and the area of the ulcer was divided into several sections based on the location of pre-design perforator flaps. According to the insertion point of the perforato

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Botros, Fady, Keren Turton, and Deane Mosher. "Dissecting the Roles of ARHGEFs in Eosinophil Polarization." FASEB Journal 31, S1 (2017). http://dx.doi.org/10.1096/fasebj.31.1_supplement.619.9.

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Members of the Rho Guanine nucleotide exchange factor (ARHGEF) family regulate GTPase activity by enhancement of release of GDP to allow GTP binding. Eosinophils undergo a rapid morphological change, with polarized cells becoming acorn‐shaped. The nucleus is propelled into the cone (nucleopod), and the granules move to the other pole of the cell (granulomeric region). RhoA GTPase regulates ROCK2, a kinase crucial for re‐organization of the eosinophil cytoskeleton following cytokine‐induced activation. Of the over 40 known ARHGEFs, three that are known to activate RhoA‐‐ARHGEF1, ARHGEF2, and AR

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