Endurance: A Year in Space, A Lifetime of Discovery – Review by Akshay Kumar

Scott Kelly is a previous military pilot and aircraft tester, a designer, A veteran of four space flights, Kelly ordered the International Space Station (ISS) on three undertakings and was an individual from the yearlong mission to the ISS. In October 2015, he set the record for the aggregate collected number of days spent in space, the single longest space mission by an American space traveler.

His indistinguishable twin sibling is Mark Kelly, additionally, a previous space explorer. The veteran of four space flights and the American record holder for successive days spent in space, Scott Kelly has encountered things not very many have. Presently, he takes us inside a circle absolutely unfriendly to human life.

He portrays exploring the outrageous test of long haul spaceflight, both existential and worn-out: the staggering impacts on the body; the seclusion from everybody he cherishes and the solaces of Earth; the weights of steady close dwelling together; the cataclysmic dangers of depressurization or crashing into space garbage, the still all the more eerie risk of being not able to help should disaster strike at home- – a horrifying circumstance Kelly confronted when, on another mission, his twin sibling’s significant other, Gabrielle Giffords, was shot while regardless he had two months in space.

Kelly’s mankind, empathy, silliness, and enthusiasm resound all through, as he reviews his harsh and-tumble New Jersey adolescence and the energetic motivation that started his shocking profession, and as he clarifies his conviction that Mars will be the following, at last, difficult advance in American spaceflight. A characteristic storyteller and current saint, Kelly has a message of seeking the future that will motivate for ages to come. Here, in his own story, we see the triumph of the human creative energy, the quality of the human will, and the endless ponder of the cosmic system.

About Kelly: Kelly’s first spaceflight was as pilot of Space Shuttle Discovery, amid STS-103 in December 1999. This was the third overhauling mission to the Hubble Space Telescope and went on for just shy of eight days. Kelly’s second spaceflight was as mission administrator of STS-118, a 12-day Space Shuttle mission to the International Space Station in August 2007.

Kelly’s third spaceflight was as leader of Expedition 26 on the ISS. He arrived 9 October 2010, on a Russian Soyuz spacecraft, during Expedition 25, and filled in as a flight build until the point when it finished. He assumed control summons of the station on 25 November 2010, toward the begin of Expedition 26 which started formally when the rocket Soyuz TMA-19 undocked, conveying the past leader of the station, Douglas H. Wheelock.Expedition 26 finished on 16 March 2011 with the flight of Soyuz TMA-01M. This was Kelly’s initially long-length spaceflight.

© Akshay Kumar [2017]

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Understanding depth of Einstein’s Field Equations – By Akshay Kumar

I never attempted these equations until I make my own particular scientific ways to deal with the level of numerical ability of science required for this, I used to think like this when I was the student. I recommend readers of my blog to read Einstein’s field equations, but before understanding them, know that the field conditions need higher arithmetic… folks once consider the photoelectric impact, that was most prominent disclosure which Einstein got Nobel prize, but now school children discover that and they comprehend the fundamentals. Same way the field condition needs fundamentals (those we don’t think about in school) They are in harmony with the complex understanding of the universe.

learning Einstein’s certain speculations give more creative energy to the mind, I myself-got comprehend when I endeavored to find out about the Einstein exceptional hypothesis of relativity.

The Einstein field conditions (EFE) or Einstein’s conditions are an arrangement of 10 conditions in Albert Einstein’s general hypothesis of relativity which depict the essential collaboration of attraction because of spacetime being bent by issue and Relativity. In the first place distributed by Einstein in 1915 as a tensor condition, the EFE compare nearby spacetime ebb and flow (communicated by the Einstein tensor) with the neighborhood Relativity and force inside that spacetime (communicated by the stress– relativity tensor).

Like how electromagnetic fields are resolved to utilize charges and streams by means of Maxwell’s conditions, the EFE are utilized to decide the spacetime geometry coming about because of the nearness of mass-Relativity and direct force, that is, they decide the metric tensor of spacetime for a given course of action of stress– relativity in the spacetime. The connection between the metric tensor and the Einstein tensor permits the EFE to be composed as an arrangement of non-straight fractional differential conditions when utilized as a part of along these lines. The arrangements of the EFE are the segments of the metric tensor. The inertial directions of particles and radiation (geodesics) in the subsequent geometry are then ascertained utilizing the geodesic equation. As well as obeying neighborhood Relativity force protection, the EFE lessen to Newton’s law of attractive energy where the gravitational field is powerless and speeds are substantially less than the speed of light. Exact answers for the EFE must be found under rearranging presumptions, for example, symmetry. Extraordinary classes of correct arrangements are frequently examined as they show numerous gravitational marvels, for example, turning dark gaps and the expanding universe. Assist rearrangements is accomplished by approximating the genuine spacetime as level spacetime with a little deviation, prompting the linearized EFE. These conditions are utilized to ponder wonders,

for example, gravitational waves. Similar to how electromagnetic fields are resolved utilizing charges and streams through Maxwell’s conditions, the EFE are utilized to decide the spacetime geometry coming about because of the nearness of mass-Relativity and straight force, that is, they decide the metric tensor of spacetime for a given course of action of stress– Relativity in the spacetime. The connection between the metric tensor and the Einstein tensor permits the EFE to be composed as an arrangement of non-straight incomplete differential conditions when utilized as a part of along these lines. The arrangements of the EFE are the segments of the metric tensor. The inertial directions of particles and radiation (geodesics) in the subsequent geometry are then computed utilizing the geodesic condition.

And in addition, obeying neighborhood Relativity force preservation, the EFE lessen to Newton’s law of attractive energy where the gravitational field is frail and speeds are considerably less than the speed of light.

Exact answers for the EFE must be found under streamlining presumptions, for example, symmetry. Uncommon classes of correct arrangements are frequently contemplated as they demonstrate numerous gravitational wonders, for example, pivoting dark gaps and the expanding universe. Promote disentanglement is accomplished by approximating the genuine spacetime as level spacetime with a little deviation, prompting the linearized EFE. These conditions are utilized to think about marvels, for example, gravitational waves.

© Akshay Kumar [2017]
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An individual is a piece of an entire – Physics & Philosophy [By Akshay Kumar ]

“An individual is a piece of an entire, called by us as the universe, a section restricted in time and space. He encounters himself, his musings and emotions as something isolated from the rest… a sort of optical hallucination of his cognizance. This daydream is a sort of jail for us, limiting us to our own wants and to love for a couple of people closest to us. Our errand must be to free ourselves from this by augmenting our hover of empathy to grasp every single living animal and the entire of nature in its excellence “

In our chance and age, mankind is progressing at an amazing rate. The innovations of the plane, prepare, cell phone and PC have conveyed us to an alternate age. Prior to these innovations, nobody trusted that individuals could converse with somebody abroad or go to another landmass inside a day. Individuals used to state this was unimaginable, yet now it is a reality. Inquiries are raised by the quick progression of innovation. For instance, is time travel conceivable? A few people assert that time travel is only a dream and that it should not be possible.

On the off-chance that We can consider Physics: We are living in the era of science and innovation and presentation of science in our day by day has changed our lives. At the point when individuals had no clue about science, and, after it’s all said and done their lives were represented by standards of various branches of science. When we light a fire, it is a concoction procedure; when we eat and process sustenance, it is organic process; when we stroll on Earth, it is administered by laws of material science; when an Earthquake happens, it’s a seismic action; when we discuss diverse landscapes and jewels of Earth surface, it is identified with Geology. There is no single movement of our lives, which characterize our one or other field of science. Essentially, material science oversees our regular day-to-day existences and is engaged in various exercises we perform and things we use in our day to day life. Here we will examine how material science is having its impact in running our ordinary assignments and helps us to do our errands, tasks, and obligations easily and adequately.

© Akshay Kumar [2017]
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Gravitational “Anomalies” Caused by Shapiro Delayed Traveling Energy Quanta Around Galactic and Cosmic Scale Structures

ENERGY FELT HYPOTHESIS

Abstract.  In 1964, Irwin Shapiro pointed out that electromagnetic waves traveling near a gravitational well of a star were delayed due to relativistic Gravitational Time Dilation (GTD). This paper proposes that traveling energy quanta (mainly vacuum energy and gravitational waves, as well as neutrinos, electromagnetic waves, cosmic rays, stellar winds, and all other kinds of waves and relativistic particles yet to be discovered) accumulate in a Density Wave like mechanism around the galactic and cosmic scale structures because of Shapiro Delay. Ultimately, the accumulative effect is a substantial increase in energy density when seen from frames of reference far from the regions where it occurs. The higher energy density is imperceptible for an observer within its own frame of reference since the proposed mechanism nature is relativistic. The higher concentration of travelling energy quanta around galaxies and galaxy clusters is creating extra gravitational distortion in spacetime with its mass equivalent.Ramen EquationThe…

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An eternal connection – Akshay Kumar [ Video Link]

We all meet, here on the Earth
For some time, we depart so early
sometimes too late.
During this Short stay….!

In this short stay, we like someone
we madly love someone
we trust, Believe someone
Never think what they are!
Physical appearance is just matter
Inner self is the real thing!

In a give and take policy
we all connect to it!
Sometimes we give Love
Sometimes we give Sorrow

When One gives love, They get
A friend Like her
Which is Eternally bonded
She will be Alarming Me, she is the perfect bliss

Of Thy her presence, Solemn and Peaceful
She Inspire me, But A a Warm
Ignore will be on her side
I don’t Know why its?
That’s not a Problem she is never a rivalry

Just make my Song to be
a favorite one
When she says “Hmm … ‘
That’s the best Tune which i ever heard
amidst the dense flow of music ( Surrounding Beautiful music )
I welcome her to my dream

Just to say FEEL My LOVE

The way I See her
She Never understood me
She is the reason for Rain
she is the reason for Rainbow grain (7 Colors)

Just to say FEEL My LOVE

Blood is red color!
her Red chin is the reason
Sky is Blue, her Nail Polish
World is finding interesting
to me but I’m not a pet to her

Just to say FEEL My LOVE

Love cares us
But we need her grace
oh god, Make her Just Smile
to me, When I see her

Just to say FEEL My LOVE

she is the Morning and evening star
she is the Rings of Saturn
Never say that its so easy to make her blink
in my words, a Silence makes my heart beat more

Just to say FEEL My LOVE

I don’t want her full love
Half, quarter yeah that’s enough
I will stay with her memories
but I want just to feel my love

Expecting nothing, In return
Welcoming a hit, as you walk on !!
(My very best thing is her wish its more than love what i expect)
Glorify the great Success in me
Artist tunes the Guitar with Tuner, she tunes me

Just to say FEEL My LOVE
Just to say FEEL My LOVE

– Akshay Kumar [ 17.05.14 ]

©All right Reserved.

Nature will never try to leave you alone – Akshay Kumar

Nature will never try to leave you alone, the best thing is it will try to behold you all time… never forget the nature’s gift to this mankind. But we human try to leave nature… and find the serenity and peace somewhere else, but nature is the best place where you take time to listen to your heartbeat, take the long breath and say ” How beautiful this earth !”.

© Akshay Kumar [2017]
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The power of highest ecstasy – in understanding Universal love

Once I believed, you’re for me You will always stay by my side till the sun & moon perish To protect and care for me till we cherish Love Ecstasy of each other will continue in heaven’s place if you not stop it (that is if you ask when it ends actually, in reality, heaven exists nowhere than in your place or heart) this is always fine to react to the mystic self-transcendence of love within our boundary line which has many relationships to tie it, but death is alone…

we experience death alone. but keep it in mind love is not like death, if you experience the joy of highest form of love-ecstasy other people also experience himself. it is the universal love according to me.

till moon and stars will cherish in morning, more correctly to tell in the day we never see them, then this physical existence and love to this skeleton body which is covered with limited flesh are mysterious. Love to become immortal without disturbing the reality is what life. there is a fine condition called the universal love please try to grab.. and use it for rest of life.

Copyright © 2010 by Akshay Kumar [Samal das akshay]
All rights reserved.

This Post or any portion thereafter may not be reproduced or used in any manner whatsoever without the express written permission of the publisher.

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My dear marshmallow Never mind – [ A poem ] By Akshay Kumar

I will see your thoughts as mine

My eyes will at no time fail to pursuit you

When you hide from me,

I am looking into your eyes

 

When I am beholding into your eyes

The love you show to your pet dog & tame kitten

At least show to me half, oh sorry at least

Unconditional love towards them, why not to me

 

Aren’t my eyes telling you I will never

leave you alone?

Is that so grim to know? I’m Romeo.

Do I need to tell you all these my dear marshmallow?

 

But never mind when I will never

Turn to your words, never mind you will

Stuck with a hard time missing me

Never mind for prodigious feeling of loneliness surrounds you

If you mind it, write back a poem. Hee Hee !!!

 

Copyright © 2010 by Akshay Kumar [Samal das akshay]
All rights reserved.

This Post or any portion thereafter may not be reproduced or used in any manner whatsoever without the express written permission of the publisher.

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A review on the analysis and application of RS-25 cryogenic engine used in NASA’s typical space missions – Astrophysics

Abstract

The cryogenic propulsion technology consists of Liquid Hydrogen (-253°C) and Liquid Oxygen (-183°C). The Newton’s third law of motion is used as a basic principle. This is the only engine that gives 100% efficiency and without any greenhouse gas, vapors emissions. This engine gives a trust of 15000 lb. This thrust can be increased to a greater extent if a proper research is carried on this technology.

When these fuels are mixed at their cryogenic temperatures they give out huge energy which can be utilized. Especially liquid hydrogen (LH2) and liquid oxygen (LO2) cryogenic propellants dramatically increased NASA’s and ISRO’s ability to explore the solar system due to their superior specific impulse capability. These cryogenic propellants can be very difficult to manage also store, cryogenic engines are advantageous over traditional hypergolic propulsion systems and are therefore enabled for many planetary science missions.

A beautiful engine namely, RS-25 took its birth in 1960, the engine produces a specific impulse which is higher in a vacuum, and the RS-25 operates at temperatures ranging from 253 °C to 3300 °C.

For RS-25, regenerative cooling is used for nozzle and MCC. The use of advanced insulation and low thermal conductivity support structures will allow for the long-term storage and use of cryogenic propellants for solar system exploration and hence allows NASA to deliver more payloads in comparison with the present generation of advancements. Targets of interest launch on smaller and less expensive launch vehicles, or both.

Also, the resulting elastoplastic deformation in the combustion chamber at cyclic thermal and mechanical loading is being analyzed and a solution strategy has been developed. This is applied to the prediction of the heat transfer and thermomechanical load-induced deformation process. It is seen that this mechanism significantly reduces the lifetime of the rocket engine.

Besides the conceptual design by the engineer, a mathematical and theoretical study is necessary in optimization to compare with finite element analysis, to increase the life of a engine, the optimization method is used, which allows the improvement of a basic design and reduction in the design variables such as plastic strain and stress, temperature.

© Akshay Kumar [2017]

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Previous article,

https://akshaykumarphysics.wordpress.com/2017/09/13/fabric-of-space-time-astrophysics-part-2/

https://akshaykumarphysics.wordpress.com/2017/08/16/stellar-spectrum-importance-ssi-astrophysics-part-1/