Renewables-2017

Prolongation of Mask’s Global Internet Author: David Judbarovski, systems engineering, principle inventor, retired judbarovski@gmail.com     Abstract Following the Media, E. Mask’s Global system, being known as StarLink, to build a free global internet for everybody, it supposedly would comprise some tens thousands satellites of 250 kg each on near circular Low Earth Orbits (LEO), spread globally To prolong lifetime of the said system, ion thruster engine is used. Its lifetime can be up to 5 years. I suppose another approach can simplify those satellites and allows their lifetime up to 20 years to prolong. PV-cells can be used for energy supply.   Orbital engine unit of satellite (i.e. both its engine and its fueling system) have to be substituted by new one near a moment, when its projected lifetime ends.   A cargo spaceship mission can be used for that purpose simultaneously for maximally big group of the satellites ones in 5 years for the E. Mask p...

Simplest navigation of submarine at deep water Author: David Judbarovski, systems engineering, principle inventor, retired judbarovski@gmail.com   It can be two different kinds of submarine navigation: (1) Deep water navigation and (2) Shallow water navigation Note: satellite location and navigation is out of consideration here. For shallow water navigation, there is used the modern database of bottom maps, must be constantly updated and maintained, while for deep water, it can be used a simplest means of location and navigation. The said simplest means are two level ones: (a) Inertial navigator (see “Precise inertial navigator, is tiny and cheap”, posted on 21.10.2020, https://judbarovski.blogspot.com/2020/10 ). It can reliably operate very long, practically for all period of autonomous mission. Nevertheless, It can be recommended a second level of navigation, serving for periodical very seldom control and correction of the said inertial navigator. It can...

Precise inertial navigator, is tiny and cheap Author: David Judbarovski, systems engineering, principle inventor, retired judbarovski@gmail.com     Abstract 3-D inertial navigator can be universal one for any vehicles, it comprises three units each being an elastic steel thin sheet of small width paired with semiconductor optical detector of a variable gap between itself and the said thin sheet. The said units are fixed orthogonally each to others and can be miniaturized down to tiny and cheap digital device paired with a tiny chip to calculate the exact vector of acceleration and then the exact route and last position of the vehicle.                

EV – lighter, cheaper, longer mileage Author: David Judbarovski, systems engineering, principle inventor judbarovski@gmail.com   Abstract The electric vehicle (EV) reported here can run 2.5 longer mileage and 3.3 cheaper for the same mileage than conventional vehicle with internal combustion engine (ICE). Foreword (1) CO2 + H2 = CO + H2O (2) CO + 2 H2 = CH2 (petrol) + H2O The said petrol being made of air and water, it is without any contaminants, and as cheap as no more than USD 0.35/kg = 0.3/liter = 1.15/gallon (for example, see “Liquid fuel for sustainability - corrected”, 27.07.2020, https://judbarovski.blogspot.com/2020/07 )   On-board of the EV (1) CH2 + 2 H2O (water steam in small excess) = CO2 (g) + 3 H2 – 200 kJ To take away CO2 poisoning fuel cells 2) CO2 (g) + 3 H2 (g) = CO2 (s) + 3 H2 (g) – 25 kJ, Totally 200 + 25 = 225 kJ (3) 225 kJ = 0.33 CH2 + air Totally 1.0 + 0.33 = 1.33 mol CH2 = 18.6 gram CH2, or 18.6 kg CH2 per 6 kg H2...

Intercept of antiship hypersonic missiles (ASHHM) Author: David Judbarovski, systems engineering, retired judbarovski@gmail.com   The said ASHHM, especially if being able to perform evasive maneuvers at every stage of its flight, it’s declared as an absolute weapon (100% target hit). I consider here to explain that the evil is not as bad as he is being treated.   Really, the bigger speed the bigger inertia, and lower a ratio of lateral speed to cruise speed, especially because a longitudinal section of any hypersonic missile is more than in order of magnitude bigger than its cross-section. Moreover, no matter how sophisticated it tumbles far from the ship, it drifts to the nearby area of the ship directly on the hunter, can be no supersonic anti-missile, but ordinary one, as for ongoing interception as for side one, and for a failure case, the defense can be reserved as by quantity as by sides.   Here I don’t consider other effective types of defense, e...