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Chemical Propulsion Laboratory - UnB
Бразилия
Добавлен 6 апр 2018
Channel of the Chemical Propulsion Laboratory at the University of Brasilia
Capital Rocket Team Conducts Successful BOSCOV Static Fire Test at CPL
On July 18th, 2024, the Chemical Propulsion Laboratory (CPL) facilitated a static fire test for the Capital Rocket Team's BOSCOV rocket engine. This test represents a critical milestone in the development of the BOSCOV rocket, validating the performance and safety of the propulsion system prior to launch.
The static fire test was conducted with the BOSCOV engine securely mounted on a horizontal test stand. Upon ignition, comprehensive performance data, including chamber pressure and thrust, was collected using CPL's integrated sensor array. This data will be analyzed to evaluate engine performance and identify any areas requiring further optimization.
This test holds particular significance...
The static fire test was conducted with the BOSCOV engine securely mounted on a horizontal test stand. Upon ignition, comprehensive performance data, including chamber pressure and thrust, was collected using CPL's integrated sensor array. This data will be analyzed to evaluate engine performance and identify any areas requiring further optimization.
This test holds particular significance...
Просмотров: 238
Видео
Hybrid rocket engine test (with TVC gimbal)
Просмотров 488Месяц назад
Test of the hybrid rocket engine SARA v2, designed for use in the TVC (thrust vector control) project funded by FAPDF and CNPq. The propellants are N2O and paraffin, with a thrust of 1 kN. The engine was tested for 5 seconds to confirm system integrity. The main achievements are as follows: - The lightweight engine structure, interfaces, and gimbal sustained dynamic and thermal loads. - The int...
Three-axis clinostat for microgravity experiments
Просмотров 2004 месяца назад
Chemical Propulsion Laboratory Develops Prototype Three-Axis Clinostat for Biological Research As a side project, the Chemical Propulsion Laboratory (CPL) has successfully built a prototype three-axis clinostat machine for biological experiments. This project was undertaken in collaboration with colleagues at the Biological Science Institute of UnB (University of Brasília). The innovative machi...
Thrust Vector Control for a Hybrid Rocket Engine
Просмотров 6666 месяцев назад
We have completed the test campaign for the hybrid rocket engine TVC based on the engine gimbal concept, previously simulated numerically. More than 50 tests on this engine were executed on the vertical test bench, including extra loads proving the safety margins of the system. This video was recorded after all the experiments were finished. The main results of this experimental work will be pr...
Demo video from Campus Party 2023
Просмотров 525Год назад
The hybrid rocket engine demo was presented at the exposition of the University of Brasilia at the Campus Party 2023 (Brasilia, Federal District, Brazil). The engine is a new generation of propulsion system developed by the Chemical Propulsion laboratory. It has 2 degrees of freedom TVC control capabilities. The development was sponsored by the FAPDF project "Development and testing of thrust v...
Hybrid Rocket Engine of CPL in Campus Party 2023
Просмотров 783Год назад
Last week (07/04/2023), our new hybrid rocket engine was presented at the exposition of the University of Brasilia at the Campus Party 2023 (Brasilia, Federal District, Brazil). The engine is a new generation of propulsion system developed by the Chemical Propulsion laboratory. It has 2 degrees of freedom TVC control capabilities. The development was sponsored by the FAPDF project "Development ...
Study of thermal load distribution in the ramjet engine
Просмотров 170Год назад
Scientific initiation project (PIBIC) "Estudo de distribuição de cargas térmicas no motor ramjet" is another preparation step to the burning test of the ramjet motor developed in the Laboratory. Author: Alexandre Ponte Carvalho Adviser: Prof. Dr. Olexiy Shynkarenko
Static test 2 of the hybrid rocket motor Circe
Просмотров 7112 года назад
Static test 2 of the Circe rocket engine at the Chemical Propulsion Laboratory (CPL) of UnB, a compilation from 5 cameras.
Static test of the hybrid rocket motor Circe
Просмотров 5802 года назад
The Capital Rocket Team of the University of Brasilia is working hard to have the best participation in the 2022 edition of LASC (Latin American Space Challenge). Last Tuesday, July 05, 2022, we did a successful static test of the Circe rocket engine at the Chemical Propulsion Laboratory (CPL) of UnB. CPL is grateful for the hard work of all of the competition team members for this test to happ...
Gas Dynamics: Lecture 17: Turbulent Boundary Layers
Просмотров 2982 года назад
Turbulent Boundary Layers 0:00 Introduction 1:39 Results for Turbulent Boundary Layers on a Flat Plate 5:26 Reference Temperature Method for Turbulent Flow 7:25 The Meador-Smart Reference Temperature Method for Turbulent Flow Prediction of Airfoil Drag 11:26 Turbulence Modeling 16:26 The Baldwin-Lomax Model 29:39 Navier-Stokes Solutions: Some Examples 54:38 Thank You for Assisting the Course of...
Aerodynamics: Lecture 17: Three-Dimensional Incompressible Flow
Просмотров 5942 года назад
Three-Dimensional Incompressible Flow 0:00 Introduction 5:00 Three-Dimensional Source 10:23 Three-Dimensional Doublet 13:42 Flow over A Sphere 23:47 General Three-Dimensional Flows: Panel Techniques 28:49 Applied Aerodynamics: The Flow over a Sphere-The Real Case 33:20 Airplane Lift and Drag 38:33 Questions
Gas Dynamics: Lecture 16: Introduction to the Fundamental Principles and Equations of Viscous Flow
Просмотров 2772 года назад
Introduction to the Fundamental Principles and Equations of Viscous Flow Introduction to Boundary Layers 0:45 Introduction 2:26 Boundary-Layer Properties 26:02 The Boundary-Layer Equations 34:41 How Do We Solve the Boundary-Layer Equations? Laminar Boundary Layers 35:54 Introduction 37:26 Incompressible Flow over a Flat Plate: The Blasius Solution 50:38 Compressible Flow over a Flat Plate The R...
Aerodynamics: Lecture 16: Incompressible Flow over Finite Wings
Просмотров 6002 года назад
Incompressible Flow over Finite Wings 0:00 A Numerical Nonlinear Lifting-Line Method 29:14 The Lifting-Surface Theory and the Vortex Lattice Numerical Method 43:56 Applied Aerodynamics: The Delta Wing
Gas Dynamics: Lecture 15: Numerical Techniques for Supersonic Flow, Elements of Hypersonic Flow
Просмотров 2582 года назад
Introduction to Numerical Techniques for Nonlinear Supersonic Flow, Elements of Hypersonic Flow 0:05 Flow over Cones Elements of Hypersonic Flow 21:37 Introduction, Qualitative Aspects of Hypersonic Flow 54:26 Newtonian Theory 1:00:46 The Lift and Drag of Wings at Hypersonic Speeds: Newtonian Results for a Flat Plate at Angle of Attack 1:06:34 Hypersonic Shock-Wave Relations and Another Look at...
Aerodynamics: Lecture 15: Incompressible Flow over Finite Wings
Просмотров 7982 года назад
Incompressible Flow over Finite Wings 0:00 Introduction: Downwash and Induced Drag 17:31 The Vortex Filament, the Biot-Savart Law, and Helmholtz’s Theorems 27:18 Prandtl’s Classical Lifting-Line Theory 52:09 Elliptical Lift Distribution 1:09:06 General Lift Distribution 1:17:03 Effect of Aspect Ratio
Gas Dynamics: Lecture 14: Introduction to Numerical Techniques for Nonlinear Supersonic Flow
Просмотров 2642 года назад
Gas Dynamics: Lecture 14: Introduction to Numerical Techniques for Nonlinear Supersonic Flow
Aerodynamics: Lecture 14: Incompressible Flow over Airfoils
Просмотров 5872 года назад
Aerodynamics: Lecture 14: Incompressible Flow over Airfoils
Gas Dynamics: Lecture 13: Introduction to Numerical Techniques for Nonlinear Supersonic Flow
Просмотров 3832 года назад
Gas Dynamics: Lecture 13: Introduction to Numerical Techniques for Nonlinear Supersonic Flow
Aerodynamics: Lecture 13: Incompressible Flow over Airfoils
Просмотров 6362 года назад
Aerodynamics: Lecture 13: Incompressible Flow over Airfoils
Gas Dynamics: Lecture 12: Subsonic Compressible Flow over Airfoils: Linear Theory
Просмотров 3722 года назад
Gas Dynamics: Lecture 12: Subsonic Compressible Flow over Airfoils: Linear Theory
Aerodynamics: Lecture 12: Incompressible Flow over Airfoils
Просмотров 8222 года назад
Aerodynamics: Lecture 12: Incompressible Flow over Airfoils
Gas Dynamics: Lecture 11: Subsonic Compressible Flow over Airfoils: Linear Theory
Просмотров 6212 года назад
Gas Dynamics: Lecture 11: Subsonic Compressible Flow over Airfoils: Linear Theory
Aerodynamics: Lecture 11: Incompressible Flow over Airfoils
Просмотров 1,3 тыс.2 года назад
Aerodynamics: Lecture 11: Incompressible Flow over Airfoils
Gas Dynamics: Lecture 10: Compressible Flow through Nozzles, Diffusers, Wind Tunnels, Airfoils
Просмотров 5062 года назад
Gas Dynamics: Lecture 10: Compressible Flow through Nozzles, Diffusers, Wind Tunnels, Airfoils
Aerodynamics: Lecture 10: Fundamentals of Inviscid, Incompressible Flow
Просмотров 6762 года назад
Aerodynamics: Lecture 10: Fundamentals of Inviscid, Incompressible Flow
Gas Dynamics: Lecture 9: Compressible Flow through Nozzles
Просмотров 4342 года назад
Gas Dynamics: Lecture 9: Compressible Flow through Nozzles
Aerodynamics: Lecture 9: Fundamentals of Inviscid, Incompressible Flow
Просмотров 8162 года назад
Aerodynamics: Lecture 9: Fundamentals of Inviscid, Incompressible Flow
Gas Dynamics: Lecture 8: Oblique Shock and Expansion Waves, Nozzles, Diffusers, and Wind Tunnels
Просмотров 3332 года назад
Gas Dynamics: Lecture 8: Oblique Shock and Expansion Waves, Nozzles, Diffusers, and Wind Tunnels
Aerodynamics: Lecture 8: Fundamentals of Inviscid, Incompressible Flow
Просмотров 1,2 тыс.2 года назад
Aerodynamics: Lecture 8: Fundamentals of Inviscid, Incompressible Flow
Gas Dynamics: Lecture 7: Oblique Shock and Expansion Waves
Просмотров 3392 года назад
Gas Dynamics: Lecture 7: Oblique Shock and Expansion Waves
the link you shared does not contain thermo file for KErosene. Where can i get the data from for Kero?
CERFACS Chemistry website
I'm in Vietnam, can you tell me if I have to create a separate file to input the chemical reaction equations into the Ansys Fluent simulation? I hope you can make a video tutorial.
Hello. If you want to use a classical combustion model, you can activate an existing reaction mechanism compatible with Ansys Fluent, such as Gri-Mech 3.0. However, if you would like to implement your own reaction model, you should refer to the manuals for Ansys Chemkin. This is a very specific topic of chemistry simulation, and it is unlikely that I will make a video tutorial about it.
@@chemicalpropulsionlaborato499 cảm ơn ạ
Hi! I don't know if you're still responding to the message, but could you send the ansys file please? I can't figure out how Ansys determines which openings fuel and oxidizer are coming through.
Hello. Please send me your e-mail address to olexiy@aerospace.unb.br
Thanks for the nice lectures, is there any chance to have the files of the lectures
Sir, analyzing the signs at 21:00 of first integral of M' I cannot understand why first term is now positive while in N' was negative (the sign of pressure that create the force remain in negative direction) and second term of first integral remain unchanged because has same signs of A'. For both terms the momentum should be clockwise and positive.
Hello, Im trying to do it with another geometry but it doesn't work, can you help me ?
Hello can you provide the code of MOC or shape how you get the coordinates. we are watching and unable to practice the model
Hello. The coordinates are present in the comments in the first part of this playlist.
Is it available for purchase
Yes, it is available through our partner company at PCTec/UnB. If you are interested, please send me a private email at olexiy@aerospace.unb.br
What app is this
Ansys Fluent
hello sir, May i know what source book you are using ?
Hello. The main book of this course is Anderson's Fundamentals of Aerodynamics.
Sir, can you please provide the pdf of the lectures
Additional materials are available for UnB students only.
Wow awesome....when do you launch guys???
Thank you! I hope we will make fire tests soon, before June.
Thank you for your tutorial!!! I got a question... Although it is a liquid & gaseous combustion problem (therefore, there is a phase change), you don't have to turn on the Multiphase option?
What textbook are you referencing in the class? Thank you!
Thank you for being so interested. I refer to the "Fundamentals of Aerodynamics" written by Anderson, John.
I want the dimensions of the diagram
👏
Thank you for these precious videos . Is there any way that i can get the pdf ?
Thank you very much forall these lectures without you i would have got zero, because i study in language that is difficult form me evertime time i come here to have a real lecture
can i please get the geometry file, it's difficult to make sections for feul
Thank you
Decided to observe what an aerodynamics class would look like. I am about to start my 3rd year in aerospace engineering. Thank you for these videos.
Thank you for being so interested.
thanks you sir
excellent work. can you please share the model of ramjet? i am also working on it for my final year project. it will really be helpful for me.
Sorry, the model is our intellectual property. I can't share it. And thank you for your interest.
@@chemicalpropulsionlaborato499 ok no issue, then can you please recommend literature/books to generate such model?
Hello, I'm just wanna say first of all thank you for the tutorial, very helpful for beginner like me :) Secondly, On the more theoretical side, I'm curious about the detailed explanation on why this simulation will never converge, as you said with it being "due to transient by-nature combustion process". Can u further elaborate a bit on that statement, or maybe direct me to literature that detailing that reasoning? Your help will be very much appreciated.
Thank you for your interest. The turbulent compressible flow with combustion and local transonic effects could never be stationary. There are a lot of good books on turbulence and combustion. I can't recommend the specific book because it depends on your location and reseller availability.
Okay, thank you for your explanation :)
Is it compulsory for learning fluid dynamics before learning these lectures Please reply sir
Thank you for your question. For sure, you need to study fluid dynamics first.
I am a student in renewable energy engineering, can I study the aerodynamics playlist, noting that I studied thermodynamics and fluid mechanics, will I be able to understand this course
Thank you for asking. You could understand something, but probably not all. Thermodynamics and fluid mechanics are the prerequisites for this course.
What are the requirements that I must understand before studying aerodynamics playlist?
Por que não produzir conteúdo pra estudantes brasileiros?
Agradeço pela dúvida. O Curso de Engenharia Aeroespacial da Universidade de Brasília (UnB) é internacional. Matérias de Aerodinâmica e Dinâmica de Gases são lecionadas em inglês.
What fuel is it burning and is it breathing air or are you using a concentrated oxidizer like pure 02 or n02
Hello, I am doing k-w sst simulation for 2D Ahmed body. I put velocity 40 m/s. Do you know what might be the reason for big values of Yplus? It shows 1500-2000, while Professor told me that it should be around 2
High Y+ values could appear due to big cell size in normal to wall direction.
Hey sir. This is such a great tutorial. Can you please share with me the ansys file to check? I'm a student and I'm working on a similar problem. Thank you sir.
thank you for amazing lectures
Thank you for your feedback!
Awesome
Thank you!
A very nice and informative tutorial, thanks for the upload. I wish to simulate the combustion of Propane with Nitrous Oxide, but I'm not sure from where to get the reaction mechanism? I tried downloading and importing the chemical kinetics and thermodynamics database files provided by, "CRECK' but my Fluent immediately crashed when I hit import. It happened several times and I've no clue about it. I suspect the problem is in the file format, but I tried importing the CRECK mechanism files in .dat format as well, but again my fluent crashed. I would really appreciate some help and guidance in this matter. Looking forward to a reply soon. Thanks, cheers!
the import chemkins function doesn't recognize the data file format. Could you please send me the files I'm not getting from the link you provided.
Very helpful and informative
Hi, very interesting tutorail for a step by step set up of the problem. but I do not understand the result You set fluid as inviscid and therefore the Navier stokes equations should degenerate into the Euler equation. Without viscosity the flow velocity field is irrotational (at least if no vortex are already inside the fluid domain as in this simulation since flow at boundary has only translational component). For irrotational flow it can be demonstrated that forces exerted by fluid on a moving body are zero (both drag and lift). Whicever is the shape of the object (it is the so called D'Alembert paradox) Except the case of vortex generation at the trailing edge of the airfoil. But the simulation apparently do not show any vortex birth at the trailing edge then moving downstream the airfoil . Flow lines are quite straight downstream of the airfoil. How can you justify that ? Is there something I do not catch in the results ?
Excellent explanation
Thank you so much, Manoj Samantara!
You should first solve in steady state. After convergence you switch it to non-stationary
How to proceed with LOX and Lh2 fuel?
You'll need to include a biphasic model in the simulation. Hopefully, I'll make a video about this case in the future.
@@chemicalpropulsionlaborato499 Anytime soon? it’ll help a lot for my ongoing project!
Hey! Did you complete the lox and lh2 analysis?
Hoping for a reply asap. 🙂
Great tutorial. Can you share the Ansys file to check?
Of course! Please send me your email privately
Did you receive it?
your pdf please
Sir, what is the right algorithm for the incomprehensible flow over an aerofoil.
Very underrated, thank you for making this
Hello, I was curious, how long did it take for your simulation to run for all 20,000 time steps?
Hello. It took roughly 15 min on an ordinary machine.
@@chemicalpropulsionlaborato499 Interesting, I am running into some very long run-times curious what the problem might be. Would I be able to have a copy of the ansys files you used if you still have them?
professor, por que em 20:40 , na contribuição da força normal para o momento na superfície inferior ocorreu inversão do sinal?
Porque o "sign convention" para forças e momentos são diferentes. O momento na superfície inferior está girando aerofólio no sentido anti-horário, por isso está negativo.
Hello professor! What if I use MMH/NTO as the propellants,and I set two injections through DPM without inlet boundary to analyze the conbustion in the nozzle,is this method workable? Looking forward to your reply!
Hello. Simulation of MMH/NTO is not much different from the current one, you (just) need an appropriate Chemkin library to realize it. CPL does not work with these propellants.
@@chemicalpropulsionlaborato499 uh,I see. Thanks for your answer!
This is a really awesome tutorial. I have subscribed your channel and have also started watching the lecture playlists. It would be great if you could make a tutorial for solid rocket motors or if possible guide me as i need it for my project.
Hi sir. Could you please share all these processes for 3-Dimension?
Why the exhaust develops mach diamonds at 0:09
What's the oxidiser
Nitrous Oxide (N2O)
@@chemicalpropulsionlaborato499 Thanks
@@chemicalpropulsionlaborato499 Imagine standing near the exhaust without ignition at full power, you will laugh you life out.