Determination of the optimal mode of operation of the small thrust motors of a maneuvering spacecraft

For mowing grass during harvesting of hay or haylage, support-free mowers with rotary movement of knives are used mainly, the productivity of which is much greater than segment-finger mowers. Free-cutting cutting apparatuses with rotational movement of knives happen with their rotation around the vertical (rotary) and horizontal (rotary) axes. Mowers that are equipped with rotary cutting devices significantly grind grass, so they are used in mower-grinders and lawn mowers. The purpose of the work is to substantiate the methodology for calculating the structural and kinematic parameters of rotary cutting devices, corresponding to the conditions of their use. The main parameters characterizing the operation of rotary cutting devices are: area, mows than in one revolution of the disk; knife working length; overlapping knives of adjacent rotors; cutting speed. In determining the basic parameters of the rotary cutting apparatus of the mower, the following assumptions were made. It was believed that the angular speed of the rotor and the translational speed of the mower are unchanged, and the movement of the unit is straightforward. In addition, the cutting apparatus performs mowing in a plane parallel to the soil surface, that is, in a plane perpendicular to most plant stems. It is shown that the absolute speed of any point of the knife varies from the maximum value equal to the sum of the peripheral speed of this point and the aggregation speed of the mower, to the minimum - the difference of the above speeds. It was found that the working length of the cutting edge of the knife is directly proportional to the speed of aggregation of the mower and inversely proportional to the angular velocity of the rotor and the number of knives mounted on it. The overlap of the path of the knives of adjacent rotors depends on the radius of the rotor; the number of knives mounted on it and the kinematic mode of operation of the cutting apparatus. Moreover, an increase in the radius of the rotor requires an increase in overlap, and an increase in the kinematic mode and the number of knives leads to a decrease in the overlap between the paths of the knives. The resulting dependence, which allows you to determine the area, mows than in one revolution of the rotor.

Optimal mode of operation for biomass production

Chemical Engineering Science ◽

10.1016/s0009-2509(02)00149-5 ◽

2002 ◽

Vol 57 (14) ◽

pp. 2799-2809 ◽

Cited By ~ 10

Author(s):

Ben H.L Betlem ◽

Pieter Mulder ◽

Brian Roffel

Keyword(s):

Biomass Production ◽

Mode Of Operation ◽

Optimal Mode

GPS for Aviation

Journal of Navigation ◽

10.1017/s0373463300039709 ◽

1983 ◽

Vol 36 (3) ◽

pp. 350-355

Author(s):

S. Ratcliffe

Keyword(s):

First Principles ◽

Ground Level ◽

Satellite System ◽

Three Dimensions ◽

Technical Knowledge ◽

The Public ◽

Mode Of Operation ◽

Acquisition Mode ◽

The Cost

It must be stated at the outset that the present author has a technical knowledge of Navstar GPS based only on fragments of the literature open to the public, and no knowledge whatever about the plans for its military use. An attempt will be made to discuss, from first principles, the consequences to both civil and friendly military users of the availability of a global, satellite-based navaid that makes possible the determination of position in three dimensions to a high accuracy. For civil users, confined to the ‘coarse acquisition’ mode, there is a 95 per cent probability that the horizontal position error will not exceed about 20 metres. For military users holding the key to a more sophisticated mode of operation, a significantly greater accuracy is available. The GPS also determines velocity, and data can be updated every second or so. It will be assumed that the navaid covers all the Earth's surface of interest, down to ground level. The cost of the satellite system is assumed to be high.

GENETIC DETERMINATION OF HIGH MEIOTIC REVERSION FREQUENCIES IN ISOLEUCINE-VALINE 1 HOMOALLELIC CROSSES IN NEUROSPORA

Canadian Journal of Genetics and Cytology ◽

10.1139/g72-001 ◽

1972 ◽

Vol 14 (1) ◽

pp. 1-11 ◽

Cited By ~ 3

Author(s):

Howard T. Bausum

Keyword(s):

Growth Rate ◽

High Frequency ◽

Chromosome Region ◽

Genetic Determination ◽

Reciprocal Crosses ◽

Enhancing Factor ◽

Mode Of Operation ◽

Single Allele ◽

Group 2

High frequency reversion in homo- and heteroallelic crosses of isoleucine-valine-1 (iv-1) group 2 alleles was reported previously. The genetic determination of homoallelic reversion in a single allele, Tiv 318, is reported here.The property of yielding prototrophs in test crosses underwent 2:2 segregation in tetrads and showed close linkage to spray (sp) and actidione-2 (act-2). Crosses of ordered segregants from a reverting lysine-1 (lys-1) iv × iv sp cross and of random spore isolates from six reverting lys-1 iv × iv act-2 crosses identified a disparity of origin of the pertinent chromosome region as an enhancing factor, but not a sine qua non of reversion. This region exists in at least three states such that a combination of two is effective. Direct involvement of outside markers was excluded. The cytogenetic nature and mode of operation of the enhancing factor are unknown.Prototroph frequency did not differ in reciprocal crosses, and the growth rate of revertants was unaffected by isoleucine and valine.

Optimal mode of operation for temperature induction of bacteriophage λQ− mutant in Escherichia coli

Bioprocess Engineering ◽

10.1007/pl00009004 ◽

1998 ◽

Vol 19 (1) ◽

pp. 7-10

Author(s):

B.-Y. Chen ◽

H. C. Lim

Keyword(s):

Escherichia Coli ◽

Mode Of Operation ◽

Optimal Mode ◽

Temperature Induction

Analysis on Optimal Mode of Operation of Small and Medium Pumped Storage Power Station

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/680/1/012032 ◽

2021 ◽

Vol 680 (1) ◽

pp. 012032

Author(s):

Yi Zhang ◽

Feng Zhang ◽

Youchun Li ◽

Jianguo Mo ◽

Lv Tang

Keyword(s):

Power Station ◽

Mode Of Operation ◽

Optimal Mode ◽

Pumped Storage

Use of Spectroscopy and Computer Simulation to the Study of Surfaces Modified by Ionic Implantation

Ukrainian Journal of Physics ◽

10.15407/ujpe66.6.511 ◽

2021 ◽

Vol 66 (6) ◽

pp. 511

Author(s):

D.Yu. Nikolaieva ◽

V.V. Honcharov ◽

D.Yu. Ivashin ◽

V.O. Zazhigalov

Keyword(s):

Computer Simulation ◽

Photoelectron Spectroscopy ◽

Curved Surfaces ◽

X Ray ◽

Method Of Determination ◽

Energy Dispersion Spectrometry ◽

Optimal Mode ◽

Ionic Implantation ◽

Phase And Elemental Compositions

Using X-ray Photoelectron Spectroscopy (XPS) and energy dispersion spectrometry, the phase and elemental compositions of the nanoscale surface layer of implants are studied. The method of determination of the optimal mode of nanoscale modification of the surfaces of metals and alloys by means of the ionic implantation is presented. The problem of processing the curved surfaces with mathematical calculations and a computer simulation is solved. The proposed technique is tested on synthesized implants. The sample hardness was taken as a criterion.

DETERMINING THE OPTIMAL MODE OF OPERATION OF THE DEVICE “AEROTON” FOR LAYING HENS

Agrarian Bulletin of the ◽

10.32417/article_5ca4df106d1b01.03591716 ◽

2019 ◽

Vol 180 (1) ◽

pp. 16-20

Author(s):

Н. Гегамян ◽

N. S. Gegamyan ◽

Л. Киселев ◽

L. Kiselev ◽

В. Киселев ◽

...

Keyword(s):

Laying Hens ◽

Mode Of Operation ◽

Optimal Mode

Method for restoring the optimal mode of operation of the reservoir – well system, taking into account the instability of the displacement front

Neftyanoe khozyaystvo - Oil Industry ◽

10.24887/0028-2448-2020-6-52-57 ◽

2020 ◽

Vol 6 ◽

pp. 52-57

Author(s):

A.Kh. Shakhverdiev ◽

◽

S.V. Arefiev ◽

A.V. Denisov ◽

R.R. Yunusov ◽

...

Keyword(s):

Displacement Front ◽

Mode Of Operation ◽

Optimal Mode