Russian Space Program: News & Discussion #3

Hole wrote:NASA is crawling back to Russia because Musk can not send enough Muskonauts to the ISS in his death traps. Or maybe the murican astronauts are refusing to be used as lab rats.

Tingsay wrote:Yep, vann7 just made me realize just how overrated space can really be.

Did the moon landing stop global warming? No
Did it cure Cancer? No
Eliminate poverty? No

Did USSR's first satellite in space prevent it's collapse? Lol no
Did Yuri gagarin's first man in space achievement made Western Dorks move over to Russia's sphere of influence? haha no      
Did Laika's achievement make the West respect the Soviets and start moving over to Soviet High-tech BizNiZ?  ahahahaha


Ironically, the thing that a lot of space enthusiasts look down on, Low-Earth Orbit is at the moment really the only part of space that has a tangible economic and practical impact on the land dwelling creatures known as Humans.

Roscosmos cosmonaut Anna Kikina became the prototype for Barbie doll

The most popular doll in the world continues to inspire girls to their wildest dreams and clearly shows that each of them can become whoever they want! Barbie presents a doll, which this time embodied the image of Anna Kikina - the only woman in the Roscosmos cosmonaut corps.

Who said that conquering the vastness of the Universe is not a woman's business? This year marks 60 years since the day when man first flew into space. On the eve of the big date and as part of the “You Can Be Whoever You Want” campaign, Barbie reminds us that any dream can come true - you just need to believe in yourself and move forward.

A striking example of this is the story of Anna Kikina, an engineer girl who once dared to take a bold step and try her hand at astronautics. Today Anna is a role model for many: she is both strong and feminine, bold and gentle, wise and with an excellent sense of humor - a bright personality in which professionalism and warmth are harmoniously combined.

The Barbie cosmonaut doll is produced exclusively in the image of Anna Kikina in two versions of costumes: in a training suit and an Orlan-type space suit. The doll is presented in a single version and is not intended for sale. It was not by chance that the Barbie brand chose Anna Kikina as a role model - the girl inspired him with her talents, success and personal qualities. By the example of Anna and other outstanding women, role models, Barbie shows that girls can become whoever they want.

“As a child, I had no dream of becoming an astronaut. But if I had a Barbie astronaut doll, then the idea of ​​becoming an astronaut would probably have arisen in my head even then, - says Anna Kikina in her interview. - The Barbie-cosmonaut in his way not only demonstrates to the child the profession, but also gives the understanding that everyone who does not miss it and will prepare for the implementation of their ideas has a chance to become an astronaut. It is not necessary that every girl playing with such a Barbie wants to become an astronaut. The most important thing is that they all know that they have a choice, they have the right to choose - any profession that they like. "
Barbie Astronaut is a doll with a story. In 1963, Valentina Tereshkova became the first woman in the world to be in space, and two years later the first Barbie cosmonaut was dedicated to her flight. The new Barbie continues the mission of its predecessor and aims to inspire girls around the world to reach their potential. She teaches you to believe in yourself, expand your boundaries and not be afraid to seek your calling. Barbie has already mastered over 200 professions, including a doctor, pilot, electric train driver, and even a presidential candidate.

Barbie teaches girls that the main beauty and strength of a woman is not only appearance, but also the inner core, knowledge, self-sufficiency, combined with the ability to overcome any obstacles on the way to dreams and self-realization. Barbie dolls have long ceased to be just toys. Today it is a symbol of inner strength and self-confidence, inspiring girls around the world to reveal their limitless potential. From princess to president, from doctor to subway driver, from zoologist to astronaut - in the You Can Be Whoever You Want program, Barbie embraces a more progressive view of society, where a new generation of girls can choose any profession and develop into any area.

lancelot wrote:None of what was used in the Apollo missions was used later.
None of the engines, none of the launchers, none of the capsules, nothing. It was just a tremendous waste of money to get a couple of Moon rocks.

limb wrote:How do you combat the claim that SpaceX has world's best rocket engines.

There are dozens of videos like this extolling the merlin and raptor as the future of rocket engine design. I see cold hard numbers that the RD-180 has pretty pathetic TW ratio compared to spacex engines.

Big_Gazza wrote:
I'm not wasting effort on debunking the fuktarded nonsense from Musks fan-boi arse-lickers.  SpaceX have nothing they can teach Russian rocket engine builders.  

The most important metric for the efficiency of a rocket engine is impulse per unit of propellant, this is called specific impulse (usually written I s p {\displaystyle I_{sp}} I_{sp}). This is either measured as a speed (the effective exhaust velocity v e {\displaystyle v_{e}} v_{e} in metres/second or ft/s) or as a time (seconds). For example, if an engine producing 100 pounds of thrust runs for 320 seconds and burns 100 pounds of propellant, then the specific impulse is 320 seconds. The higher the specific impulse, the less propellant is required to provide the desired impulse.

The specific impulse that can be achieved is primarily a function of the propellant mix (and ultimately would limit the specific impulse), but practical limits on chamber pressures and the nozzle expansion ratios reduce the performance that can be achieved.

Isp (vac.) 380 s (3,700 m/s), goal