Liquid Rocket Engines 1 : Design

  Рет қаралды 127,646

Charlie Garcia

Charlie Garcia

Күн бұрын

Пікірлер: 238
@BPSspace
@BPSspace 5 жыл бұрын
Can't wait to see more, great work, Charlie!
@SanderRoelofs96
@SanderRoelofs96 5 жыл бұрын
You should build him some SRBs
@vineethba1503
@vineethba1503 5 жыл бұрын
It will be great if you both collaborate and build a rocket ..
@justanotherasian4395
@justanotherasian4395 5 жыл бұрын
Vineeth BA oh. My. God. Yes. Joe could design the flight computer and gimble system while Charlie makes the engine
@shlok975
@shlok975 5 жыл бұрын
hey! you are here too!
@habibarrasyid8186
@habibarrasyid8186 4 жыл бұрын
BPS.space!!
@MrZnarffy
@MrZnarffy 5 жыл бұрын
I would love to see you develop and test this engine.. Together with BPs space this is getting interesting. :)
@diogocastanheira9899
@diogocastanheira9899 5 жыл бұрын
Here to see all the videos till the end result! Good explanation!
@linztube
@linztube 5 жыл бұрын
This is fantastic, there is essentially no content online for hobby scale liquid rocket engines. I've always wanted to do this as a project. Thanks for great intro video, can't wait for the rest of the series 😁🚀
@jason9152
@jason9152 5 жыл бұрын
Looking forward to seeing this project advance. I really hope you take us along for the full ride.
@karelmatuska977
@karelmatuska977 5 жыл бұрын
Exactly. I feel like KZbin is missing comprehensive video series on rocket engine design. Feel free to make longer in-depth videos. Can't wait for next one. Thx BPS!
@ricardomourita1823
@ricardomourita1823 5 жыл бұрын
Man, you really got me going now. I didn't know how to even start doing the math, I've made the stoichiometric calculations to have a perfect fuel / oxidizer ratio but never figured out where to go then. This was a quick "tutorial" but really easy to understand for the average mind! Thank YOU!
@storminmormin14
@storminmormin14 5 жыл бұрын
This series sounds awesome! The more in-depth the better.
@chancepricee
@chancepricee 5 жыл бұрын
BPS sent me over, I’m super excited to see what you do since I’m going into my junior year studying these mechanics.
@TeaheanYT
@TeaheanYT 2 жыл бұрын
Hi, thank you SO MUCH for this. Learning so much here compared to what I learned in class. It was mostly theory, but all of this is practical. Just another reminder that you're a really big help. hope you're doing well.
@martinmcgirk2692
@martinmcgirk2692 5 жыл бұрын
I am interested in seeing all those things that you just suggested. Awesome concept for a channel!
@jrs36psu
@jrs36psu 5 жыл бұрын
interesting first order explanation to get a feel of the scale of the numbers. thanks.
@astrofox2409
@astrofox2409 5 жыл бұрын
Thank you for attempting this sort of challenge. I have been longing to see how I can produce one for use on high power rockets to send small payloads to high altitudes, not to mention my university has brought up the possibility of developing one from scratch. However, I do not quite know where to start other than reading and taking notes from "An Introduction to Rocket Science and Engineering" as well as reading "Ignition!" which, admittedly probably isn't enough for me to fully understand how they are constructed.
@jaredmulconry
@jaredmulconry 5 жыл бұрын
Count me in on this. The more depth you're willing to provided in your process, the better, imo :)
@jaredmulconry
@jaredmulconry 5 жыл бұрын
I ended up here because of BPS' recommendation in his community post
@kanva4
@kanva4 5 жыл бұрын
Please please please do more videos about this topic. This is great!
@maxwolf1602
@maxwolf1602 5 жыл бұрын
Most legendary Cosmosphere counselor of all time
@CanineDefenseTechnologies
@CanineDefenseTechnologies 5 жыл бұрын
Even more excuses for me to build a propulsion test stand..
@RyanDobler
@RyanDobler 5 жыл бұрын
Subscribed and SUPER interested in all the nitty gritty details!
@SimplySpace
@SimplySpace 5 жыл бұрын
This is awesome! I can't wait to see this work.
@amperzand9162
@amperzand9162 5 жыл бұрын
I'm very interested to see more of this project!
@tomaszcomasz_
@tomaszcomasz_ 5 жыл бұрын
Wow! That is amazing! Very interesting topic, liquid rocket engines seems like a very complex thing 🤔 Looking forward for next video! PS. Thanks Joe for bringing me here!
@kemfic
@kemfic 5 жыл бұрын
absolutely ecstatic that you finally posted this
@palliyil
@palliyil 5 жыл бұрын
Please continue with the series even if you fail. Eagerly awaiting the next episode
@Bear049
@Bear049 11 ай бұрын
How do you purpose to deal with heating of the combustion chamber and the nozzle. Thanks if you have time do you have time to talk to a old guy about a few ideas
@Ollie287
@Ollie287 6 ай бұрын
4:16 @CharlieGarcia How may this process be done? is it just based of the price and how much fuel is used? just wanna make sure
@papatrick1
@papatrick1 5 жыл бұрын
You got me interested! Looking forward to your next video.
@Breadfan00
@Breadfan00 Ай бұрын
2:44 does anybody know how he gets to 3030K here? I only get something around 7000K, and when I use high temperature values for cp, I get to slightly above 4000K. So I must be making a mistake somewhere
@octavedelpierre5718
@octavedelpierre5718 5 жыл бұрын
Very nice and interesting video, it could be nice to see more !!
@junuhunuproductions
@junuhunuproductions 5 жыл бұрын
Good luck Charlie. Very interesting.
@alimoodie1
@alimoodie1 5 жыл бұрын
Go deep man! It's really cool seeing the thermodynamics behind the engine.
@jamieclarke321
@jamieclarke321 5 жыл бұрын
I saw you on bps space. Would definitely be interested in all the nitty gritty details of the whole design process behind this
@maxwolf1602
@maxwolf1602 5 жыл бұрын
Charlie what level are you? Those are some pretty beefy rockets in the background. I just got my L1 certification yesterday. You set off much of my interest in space at the Cosmosphere and it literally changed my life. Thanks for the great years, man!
@AstroCharlie
@AstroCharlie 5 жыл бұрын
I'm so excited to hear that! I'm honored you remember me. I earned my L3 on an M1650 two years ago with the black and blue rocket in the left corner.
@jamalshaterian
@jamalshaterian 5 жыл бұрын
great presentation. ill be waiting for more videos.
@eduardovillalobos8886
@eduardovillalobos8886 4 жыл бұрын
This video made designing an engine incredibly simple! New subscriber :) I'm *attempting* to design a 3D printable rocket engine that won't melt. Easier said than Done!
@deleted_account-u3w
@deleted_account-u3w 2 жыл бұрын
This video is so good I subscribed before finishing it
@animationspace8550
@animationspace8550 5 жыл бұрын
4:28 I'm confused as to whether you crossed out the pressure of ambiance, or both pressure of exhaust and ambiance. Can someone elaborate?
@vineethba1503
@vineethba1503 5 жыл бұрын
Excellent work Charlie , looking forward for your videos on how to design a combustion chamber and nozzle for liquid propellant rocket engines
@YukonK9
@YukonK9 5 жыл бұрын
I'm so excited for more! Also promise me if you get it to work that you'll put a marshmallow coated in phenolic ablatives into the exhaust and attempt to roast it
@mariog9202
@mariog9202 5 жыл бұрын
Thanks bps space for recommending this video, very cool!!
@sock501
@sock501 5 жыл бұрын
Definitely interested in both more and more in-depth content!
@manvirsingh3727
@manvirsingh3727 4 жыл бұрын
Can you tell me how did you calculated combustion temperature and exhaust velocity didn't get that 😭
@rfs.aviation3977
@rfs.aviation3977 5 жыл бұрын
Love the vids keep it up and would love to see more like these.🚀
@BI-11y_TheStormTrooper
@BI-11y_TheStormTrooper Жыл бұрын
We will watch your hobby with great interest.
@Parapooper13
@Parapooper13 5 жыл бұрын
I think the people watching these videos would appreciate as much detail as possible 😂
@counter-g2585
@counter-g2585 2 жыл бұрын
Sure enough
@davidduhme7780
@davidduhme7780 5 жыл бұрын
Pls do more of this... I love it
@manvirsingh3727
@manvirsingh3727 4 жыл бұрын
What did you put in ∆h plz reply 🙏🏻
@Your_pocket_medic
@Your_pocket_medic 3 жыл бұрын
could you put a link on all of your equations cause i am using different prepollents
@joshuasturre1454
@joshuasturre1454 5 жыл бұрын
Yes, we are very interested in the more in depth videos!!! Load me up with plumbing footage!
@rh323
@rh323 2 жыл бұрын
Great information. Thank you Charlie
@fineidos151
@fineidos151 4 жыл бұрын
Wow you deserve a LOT more subscribers!
@junpreetham
@junpreetham 5 жыл бұрын
This is going to be exciting
@محمدالسلطاني-ث7ظ
@محمدالسلطاني-ث7ظ Жыл бұрын
What is the size of the nozzle diameter relative to the size of the engine diameter?
@runee7437
@runee7437 5 жыл бұрын
Stoked for more content! Good luck.
@hyunsoorocket
@hyunsoorocket 2 жыл бұрын
Could you please elaborate on the specific heats when calculating the combustion chamber temperature?
@matthewsnyder4211
@matthewsnyder4211 2 жыл бұрын
^^ Did you ever figure it out?
@aryanrajsingh3058
@aryanrajsingh3058 5 жыл бұрын
Can't wait to see more
@gurkanseymen1134
@gurkanseymen1134 4 жыл бұрын
Can we use liquid propane for propellant
@Ollie287
@Ollie287 6 ай бұрын
yes i would believe so just follow the process he did in the video and it should work
@jamieprice1736
@jamieprice1736 4 жыл бұрын
2:40 what are the units used?
@thomasdegenhardt8014
@thomasdegenhardt8014 5 жыл бұрын
I’m 15 and making solid propellants for my rockets. Making a liquid fuelled engine is definitely my next project once I have a bit more experience with liquid propellants... a lot more experience 😄
@CombraStudios
@CombraStudios 2 жыл бұрын
What are some yet unbroken records regarding amateur liquid fueled rockets and what have already been accomplished?
@martinchambers9918
@martinchambers9918 5 жыл бұрын
Excellent video with great info.
@jwh103
@jwh103 5 жыл бұрын
Hi Charlie. First of all, thank you for sharing your knowledge with us. It's really great to see other rocket engineers ideas. But I believe I have found some error in your calculation of enthalpy of formation. 2:01 From WIKI (en.wikipedia.org/wiki/Standard_enthalpy_of_formation ) enthalpy of formation for C2H5OH -277.0 kj/mol H2O -241.818 kj/mol CO2 -393.509 kj/mol. As far as I know, enthalpy of formation 3*(-241.818)+2*(-393.509)-(-277.0) = -1235.472 kj/mol. If I'm right, for 1mole of ethanol 1235 kj of energy is released. Feel free to correct me if I'm wrong. Again thank you for making this video. bye
@AstroCharlie
@AstroCharlie 5 жыл бұрын
Normally, you'd be right! However there's a phase change or two to remember, since we'll have liquid reactants and gaseous propellants. The other secret is that software does this now-a-days with much higher fidelity because it can consider reactions that don't run to completion, and disassociated products in the exhaust stream.
@whiteangelberry7417
@whiteangelberry7417 5 жыл бұрын
Hello, im working on a 1.4kN liquid rocket engine for a high school project. My calculations somehow led to a very long combustion chamber. Could a longer combustion chamber lead to more instabilities or somehow endanger the engine itself. From what i know, it just loses its energy.
@AstroCharlie
@AstroCharlie 5 жыл бұрын
We'll talk about combustion chamber design in a few weeks, but especially for small engines, the chambers look disproportionately long in order to get good combustion efficiency.
@michaeljulian9198
@michaeljulian9198 5 жыл бұрын
If/when I get back to college, I want to eventually design and build a ~1kN MethaLOX engine, so if you don't mind I'm gonna be taking some serious notes, so if you want to go beyond the layman's explanations into truly nitty gritty masters details, please do cause I'm gonna need all the help that I can get to have a basic head start before I get back.
@AstroCharlie
@AstroCharlie 5 жыл бұрын
I don't talk about it here, but I did design work on a 2kN methalox engine. Machined a lot of test parts, but we had problems with supercritical methane injection, cooling, and generally inexperienced choices made early in the design. I'll throw deets in later videos.
@boweneveritt3400
@boweneveritt3400 4 жыл бұрын
@@dingwon Share the resources!!! I'd love to check them out!
@danettimartino8146
@danettimartino8146 4 жыл бұрын
@@dingwon Hi, is this offer still available? If you could share your resources that would be greatly appreciated.
@robbiejames1540
@robbiejames1540 4 жыл бұрын
If you're still interested, i've found using NASA's CEA ( cearun.grc.nasa.gov/ ) on the rocket mode will tell you almost anything you want so long as you spend a bit of time figuring it out.
@michaeljulian9198
@michaeljulian9198 4 жыл бұрын
@@robbiejames1540 Thanks for the link, I've bookmarked it! Unfortunately I'll be putting any return to classes plans on hold until the pandemic ends, but I've been gradually learning basic and above basic equations and concepts I previously hadn't learned yet. If I can learn some thermodynamics and become more acquainted with it as pertaining to the gas laws, I could potentially design a simplified rocket engine, or at least familiarize myself to the equations for one, before I make any real plans.
@larsenmathias4499
@larsenmathias4499 4 жыл бұрын
Can you please tell me which solid fuel is used in rocket
@nicholaschavez5120
@nicholaschavez5120 5 жыл бұрын
Thank you Charlie, very cool!
@Graham.556
@Graham.556 5 жыл бұрын
Small question. Have you read "Ignition!" by John D. Clark? if so do you recommend it?
@AstroCharlie
@AstroCharlie 5 жыл бұрын
I have, and I do recommend it!
@Graham.556
@Graham.556 5 жыл бұрын
@@AstroCharlie Awesome! thanks for reply!
@mattholmes00
@mattholmes00 11 ай бұрын
Nomenclature; correct me if I’m wrong, but c* is typically used for characteristic velocity, c is exhaust velocity, not the same quantities (c* isn’t even a real velocity)
@ammarjr6117
@ammarjr6117 3 жыл бұрын
Where can i find a references book for design a rocket ?
@sagarhm2237
@sagarhm2237 3 жыл бұрын
Can you suggest some good books to learn these things in depth. Plzzzz
@mohitjoc25
@mohitjoc25 3 жыл бұрын
Make more lectures on how to stable rocket....and all about rockets from starting
@mmb3006
@mmb3006 4 жыл бұрын
how did you get Cp of co2 and h2o because from what i see it changes with temperature and you cant calculate it without so did you just use a prediction?
@anshuman_eek
@anshuman_eek 5 жыл бұрын
Highly interested and worth the wait
@larsenmathias4499
@larsenmathias4499 4 жыл бұрын
How much thrust can your rocket give can it reach space
@MichaelFairhurst
@MichaelFairhurst 3 жыл бұрын
For the equation C*^2/2 = CpTc, does this consider pressure increase from released gasses? Is pressure increase negligible or does it somehow get factored to the derivation of this expression, in due to using Cp instead of isobaric specific heat? Would it not be possible to use ke = mv^2/2 to estimate characteristic velocity, using entropy in addition to enthalpy, to get an estimate of best case conversion from chemical energy to exhaust velocity?
@ThatOneOddGuy
@ThatOneOddGuy 2 жыл бұрын
alright I want to make one but I want some books about it first so I can understand all the equations you used also where did you learn what you to make this engine if there are books can I get the names and links
@danielalmeida4826
@danielalmeida4826 4 жыл бұрын
hi! does regular comprssed air work as oxidixer, and if not where can i get the nitrous? thank you!
@ryanthompson7884
@ryanthompson7884 2 жыл бұрын
When solving for the temperature of combustion, how did you find delta h? I get finding specific heats and your initial temperature, but I can't figure out how you found your change in enthalpy?
@matthewsnyder4211
@matthewsnyder4211 2 жыл бұрын
^^Did you figure it out?
@eritra4303
@eritra4303 3 жыл бұрын
But how do you know the mass flow rate?
@TheMessi324
@TheMessi324 5 жыл бұрын
Hi Charlie ! Thanks for your great explainations about Rocket engines But I've tried many times to calculate an adiabatic combustion temperature, and every time I get a crazy value like 5000K, and you got a decent value here, how did you do ??? What values should I take for DH, and the heat capacities ??
@atakankeskin2927
@atakankeskin2927 5 жыл бұрын
More video please please please, don't worry we are curious about detsils it wont be bored 👌🏽
@sriramswain3864
@sriramswain3864 4 жыл бұрын
Respected Sir, How to design a liquid rocket engine with new propellant mixtures, without knowing any of the performance parameters like chamber pressure,specific impulse,etc.completely from scratch only using the design equations,
@justanotherasian4395
@justanotherasian4395 5 жыл бұрын
Ok I need a workshop, some materials, ethynol, LOX, and a test stand. I am actually curious tho, my friends and I are designing a rocket and I was wondering if I should use a hybrid or liquid fueled engine. I’m aware of the pros and cons of both, I just want a 2nd opinion.
@silviobertonati8497
@silviobertonati8497 5 жыл бұрын
Very nice! Can´t wait to see more!
@baacco.3658
@baacco.3658 5 жыл бұрын
I’m so glad I found your channel! I’m going into my sophomore year of college, and have a similar goal (rocket engine build) I want to reach by graduation. Based on your injector design, I’m guessing you already know about them, but I recommend checking out Copenhagen suborbitals. They walk through a bunch of cool stuff (not just the propulsion system, but....) and they really got me interested. Also, could I ask what books/videos you primarily used to get started? (Unless it’s all from class)Thanks a ton, and can’t wait to see more! Isaac Davanzati
@AstroCharlie
@AstroCharlie 5 жыл бұрын
Hi Isaac, I'm quite familiar with Copenhagen Suborbitals, I was quite inspired by them myself back in the late -oughts (jeez I feel old...) MIT's class notes are linked in the description. For texts, I used Huzel and Huang's excellent guide on small rocket design and Sutton's Rocket Propulsion Elements to start.
@holdenfine4
@holdenfine4 5 жыл бұрын
How did you get 32.25 megajoules/kg? If 1000 grams (1kg) of propellant were used(oxygen included), 32 percent by mass would have to be ethanol. In 320 grams of ethanol, there are about 7 mols ethanol. 7mol times 1145 kJ/mol is 8015 kj or 8 mj/kg propellant. Even if you burned 1000 grams ethanol in excess oxygen, it would only equate to about 24 megajoules. Maybe I’m missing something?
@theredstonehive
@theredstonehive 5 жыл бұрын
I think his calculations are using 70% Ethanol, the rest being Water. That is where the 1145 kJ/mol comes from, undiluted it is around 1365.5 kJ/mol.
@carstenbehling1280
@carstenbehling1280 4 жыл бұрын
I think the math should be: 1000g * mol/46g = 21mol ... then ... 1248kJ/mol * 21mol = 26208kJ = 26,2MJ
@TrollerzTV
@TrollerzTV 4 жыл бұрын
@@theredstonehive where did the 1145 come from is it on a thermodynamic table for ethanol specifically?
@nadavram7322
@nadavram7322 4 жыл бұрын
Any recommended books to learn about this kinda stuff? I'm in high school rn and I really want to learn! I don't care if they're technical or involve some math as long as I can mostly understand them :) 📖
@patb686
@patb686 5 жыл бұрын
Dude you are a master! Now build a simple a powerful Pulse detonation engine that could power a small aircraft or something like an Ekranoplan.
@fusion5329
@fusion5329 5 жыл бұрын
Hey mr. How did you find out that ethanol and oxygen releases 1,145 kiljoules of energy? I would love to know how to find out this but with C12H22O11 and KNO3 instead. Could you please tell me if there is any possible way to find out i would love you forever. Thanks sir.
@AstroCharlie
@AstroCharlie 5 жыл бұрын
You'll need to calculate it by doing an energy balance on the reactant products using energy of formation.
@wyattb3138
@wyattb3138 5 жыл бұрын
Why not use diesel that is identical to RP-1?
@TNTHammer
@TNTHammer 5 жыл бұрын
Soot might limit engine burn time and it's ability to be re used. Also, it's dense, and it can add more problems.
@Thorgon-Cross
@Thorgon-Cross 5 жыл бұрын
Follow his lead and build a small one first, not like me who try'd to build a 5Kn engine right away. Short version I ended up putting the 5Kn on hold to build (and now done test firing) a smaller one first.
@Gingerbread3232
@Gingerbread3232 8 ай бұрын
Where would I go to learn this math?
@shivamvevo9443
@shivamvevo9443 5 жыл бұрын
My parents forced me to become doctor but want to become space scientist You are lucky man
@Extorc
@Extorc 4 жыл бұрын
i have a question though , is this just a lab model to look at or it has enough thrust to weight raio to support use
@CarlosAM1
@CarlosAM1 5 жыл бұрын
Where can I get liquid oxygen? :v
@perigeedynamics5941
@perigeedynamics5941 3 жыл бұрын
SAW YOU AT THE BPS.SPACE LAUNCH TODAY!!!!!!
@addisonmartin730
@addisonmartin730 5 жыл бұрын
Can confirm, am interested.
@akintolafolasakin9512
@akintolafolasakin9512 4 жыл бұрын
Hello I am working on a rocket and I need your help
@thebackyardspaceprogram
@thebackyardspaceprogram Жыл бұрын
How did you get 3030K, I just can't get to that result?!
@pixel690
@pixel690 5 жыл бұрын
is this pretty much the only type of it's video
@pixel690
@pixel690 5 жыл бұрын
especially with LOX
@Origamiztec
@Origamiztec 4 жыл бұрын
Hey Charlie, at 1:59, when calculating heat released, 1145 kJ/mol is the enthalpy from the reaction, right? I saw from another site that the reaction of ethanol with LOX is 1368 kJ/mol instead. Is there a reason they're different? Am I looking at the wrong value on here - www.ausetute.com.au/heatcomb.html? Thanks! Awesome series!
@AstroCharlie
@AstroCharlie 4 жыл бұрын
I don't explain this very clearly, but my fuel is only 70% ethanol to help control heating, hence the lower enthalpy of combustion.
@yorklin3672
@yorklin3672 5 жыл бұрын
Gosh!!! Finally. Thanks for your sharing
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