Soyuz-Fregat Model Rockets

As you may know the Gaia satellite will be launched by a Soyuz-Fregat rocket. Therefore it was somehow unavoidable for me to build a Soyuz-Fregat model. I am building scale model rocket for several years already – and I am flying them. My job as astrophysicist is mainly computer-based work. Thus, building something with your own hands is a nice alternative approach for your spare time.

3xSoyuzFregat

The Russian Soyuz rocket has an unusual form with its four conical-shaped booster stages. The more usual form is to have cylindrical stages as most of the space launchers. But it turned out that the conical-shaped boosters of the Soyuz are an advantage for the aerodynamics, especially the gap between the boosters has an effect of a “negative” wing. To add wings to the rocket model is the normal concept to get a stable flight configuration. As I was skeptical about the “negative” wing concept I started with a small, but proven model kit of a Soyuz rocket (Dr. Zooch R-7). This model with a 1:100 scaling is about 46 cm high with a weight of 100 g. The only modification was to replace the Soyuz space ship section by the payload fairing of a Soyuz-Fregat.

The first flight went well, more or less. There was no problem with the aerodynamics, but a small one with the deployment of the parachute used for the purpose of a soft landing. The parachute did not fully deploy as it was partially sticking in the small parachute section. No problem – just build the next larger version of the rocket. As the room for the parachute increases with volume and the weight of the rocket with surface the parachute problem was solved easily. Thus, the 1:72 scale model was easily build and flown several times without any issue.

Note, that both versions of the rocket were powered by high-quality black powder motors. The large version actually uses the largest black powder motor available at the moment. If you want to fly a larger rocket motor you actually have to use a different, more powerful solid propellant. Why aren´t we using the same propellant as used in the Solid Rocket Booster (SRB) of the Space Shuttle? This should be powerful enough, right? This is what I am using for the large Soyuz-Fregat model rocket with 1:50 scale. It is about 1m tall and has a weight of more than 500 g. The propellant, a block of a mixture of aluminum powder and ammonium perchlorate, is loaded in a reusable metal casing like for the real SRBs. Igniting this mixture gives a bright flame and an impressive smoke trail.

Several successful test flights have taken place including a very interesting live streaming test. Now the three rocket models are ready for their real purpose – for display during talks and exhibitions around the Gaia launch date. Launches will be performed for classes – live at the field or streamed live to the audience.


Some videos about these rocketry activities are available:

Early Soyuz-Fregat launches

First flight of the large Soyuz-Fregat model

Live transmission of 2 launches, additional video footage linked in the YouTube description

Latest two Soyuz launches with improved camera work testing flights with lower altitude

Updates are given on my personal blog: http://hvossgaia.wordpress.com .

 

sample resume for medical technician the curious incident of the dog in the nighttime essay help thesis on petrophysics help with economy homework live paper help discount phd thesis catalogue probability homework help essay on oprah is proof for the existence of god necessary essay term paper pay economics homework help forum purchase viagra professional purchase without prescription monet essay help all about me writing paper dulcolax generic drug purchaser job description unit conversion homework help help with stoichiometry homework brooke winchell dissertation custom writting service how can i order satibo capsules cheap no script dissertation gilles aillaud lewis dot structure homework help teaching english to young learners assignment help distinctive voices thesis thesis topics for mechanical engineering students best law essay writers 24 hour homework help essay on the american dream how to prepare for dissertation defense docotrs dissertation robert morgan 1960 contoh chronological order essay essay help guide professional thesis writing developing a program to write a new custom program help with sentences buy compare contrast essay help in research paper purchase officer resume sample do my researchpaper order resume online viagra best resume writing service 2014 dubai cheap homework desks acquisto ophthacare nelle filippine american based essay writing companies essay on marine corps customs and courtesies homework helper what is the number sentence fit admissions essay help best cv writing services queens ny eating disorder article buy tastylia via paypal resume writing services greensboro nc aristocort from mexico help with geography homework ks3 apcalis sx oral jelly in germany do my admission essay writing skills sample resume for sales representative how to write a letter to doctor for medical records how to write mystery stories psychology essay for sale pythagorean theorem homework help dnb thesis challan extra super tadadel in germany top rated resume writing services 2016 proposal and dissertation help undergraduate admission essay editing services paper help with writing a personal statement how long should personal statements be for medical school need help writing college application essay importance of assignment geography homework help does homework help or harm write my outline d&t coursework help resume format for sales profile can google do my math homework police report writing help download resume format for mechanical engineer fresher books on research paper writing outline research paper writing business plan writing services durban essay on antisocial personality disorders anger at online essay service dissertation pages long how to write a dissertation oxford names of famous essay writers essay writers list diffrence entre dissertation et commentaire maths homework help percentages sample cover letters for sales associate dissertation service in malaysia cheapest thesis statement for anxiety disorder resume writing services minneapolis admissions papers for sales description i have no motivation to write my essay financial and managerial accounting online homework help purchase a financial planning business dissertation writing service usa 3d printing thomas jefferson louisiana purchase essay phd thesis statistics order law essay help on writing essays descriptive essay sample in third person promo code for resume 2 hire how to write my paper in apa style bj pinchbecks homework help help with stoichiometry homework i need someone to write my dissertation proofread tutoring help online for free dissertation portsmouth bottled water write my philosophy paper best resume writing services dc nj homework help for 2nd graders college application essay writing services menosan paypal division essay on a shopping mall where to buy parchment paper for invitations paper essay writing service ancient egyptian architecture dissertation questions extended essay order the nature of order an essay on the art of building online essay writer jobs custom essay australia paypal writing a business plan for a daycare center cheap paper towels and toilet paper help with accounting homework process essay on how to buy a house articles on essay writing services essay on the crucible best resume writing services singapore biology assignment help are custom essay services legal help with job application form questions malaysia bus service essay hrw algebra 2 homework help professional resume writing services in charlotte nc help with gcse biology coursework sfpl live homework help get an essay written aim homework helper cheap exam papers acquista adipin online homework help about facts details help writing essay ged test write my dissertation for me uk write my paper login medieval castle room homework help 10 best resume writing services world dissertation writing services electrical engineering homework help forum elsevier editing service proquest dissertations and theses database best dissertation help essay writer's tone homework help la buy essays online townie order system thesis brown essay help it dissertation help dissertation help ireland in london do my cad assignment business plan writers in boston ns homework helpline free writing homework help do my stats homework super herbal peni large purchase homework help in writing a paper custom written essay atheletes swim caps crude oil homework help free essay writing service buy college esays resume objective for sales associate best admission essay service 8th grade social studies homework help homework help with determining similar polygons i need help writing a essay professional resume writing services des moines term papers help argumentative essay abortion eating disorders informative essay assignment help tutors brand extra super avana online no prescription online help college essays cover letter for medical coding position resume objective example for sales gujarati news papers online dissertation review service marketing essay writer app does money buy happiness essays can i hand write my resume custom written creative writing assignments most reliable essay writing services mba admission essay buy video purchase a dissertation journey correct order of a lab report thesis writing service in chennai imodium in germany help doing my essay