@@tb46475 well Falcon heavy is same as falcon 9 they've just strapped 2 f9 like boosters on the both side of falcon 9 first stage but starship is totally a different thing
I've seen far crazier stuff done with solid motors. www.mda.mil/video/FTM-44%20Public%20Release%20Video_20-MDA-10599_web.mp4 is done entirely with solid motors, for example. Still, extremely impressive for a non-military budget!
I don't think he will ever properly land a solid motor rocket, but he is laying all the groundwork. If/when he switches to liquid fueled rockets, that he can vary the thrust and shut off at the right time, he'll nail the landing easy.
You have done an amazing thing. This is amazing. It doesn't matter if it sticks the landing. When I was in Jr high school, we used to talk about being able to do this in the rocketry club. I was adamant that it couldn't be done at the scale of modelling we had back then (1982). When I saw SpaceX do it , I felt like my opinion was verified. Not on the model rocket scale. You have proved me wrong, and I'm glad you did.
Wow, Joe! Incredible to see the work you have been doing...and harvesting from interns! Terrific progress, you are closing in...”vanishing decimals of accuracy.”😎
for the spark protection system, it might be doable with just a disk of wax paper or foil. sandwich the paper between the lift and landing motors have it slightly oversized so that it doesn't fall through the hole, when the landing motor fires the pressure should blow it out or just punch through it.
To avoid the problem of the propulsion motor potentially igniting the landing motor, why not use E15-0 and plug the top with epoxy ? This way there will be no delay charge burning which could ignite the other motor.
On the topic of bleeding off thrust: Why swing on one axis when you could swing in both the x and y axis? (a circular sweep pattern) At the end of the 360 degrees(and then negative 360 degrees), you would have canceled out all of the forces. This swinging in a circle the thrust vector can avoid passing through the origin. The circle around the origin can be larger( to bleed even more thrust) or can be small( to add more thrust). Plus, if roll is introduced you already have a method to handle it.
You could insert a pin which comes out after engine ejection which will just go 20 cm inside the ground to stabilize the rocket when it is on the ground.
Nice project, very well done. Move your antenna, that sounds very smart, and add two more brake fins. This will let your first motor fall away more quickly and help stabilize the orientation of the booster before your landing motor fires.
Also happens to be the same solution as the FAMID: Family annoying mouse impingement device. Place on the bottom of a laser mouse. People from the pre mouse ball generation never think to look under the mouse.
A wild thought: When the rocket tries to land straight the issue may be with the solid propellant. The level of thrust control required is possible with Liquid propellant.
Brilliant approach to thrust control on landing! Haven't found subsequent video yet, but I'm thinking GPS in both nose cone and center of mass. If tilted >5° from vertical, use com GPS input, else use nose cone GPS.
In short you need to characterize the ignition delay, find out the maximum delay and use that to define the target height for ignition with minimum delay. Minimum delay = direct descent with burnout just before touchdown, with no diversion. As the delay gets longer it has to do a larger amount of diversion, in less time, and the software has to detect the time between ignition command and actual ignition then on the fly come up with a diversion profile that ends with the rocket vertical and zero horizontal velocity at burnout, at the ideal height. The fix for possible accidental descent ignition is super simple. Pack the igniter into the nozzle with a piece of fireproof parachute wadding paper. That might also minimize the ignition delay variance by ensuring the igniter is pressed firmly against the fuel grain.
Nice work! Have you thought about adding an extra damper such as a rod system. Think motorcycle forks. This would allow one section of tubing to flow into the next. Might be the final piece of the puzzle you need.
gnss isnt accurate enough to feed into your loop with any kind of certainty. you need some sort of lidar/camera system. or maybe RTK gps with a base station
It is. It isn't absolutely accurate, but relatively. It's always off by up to a few meters, but for a duration of a flight that stays the same distance and direction.
Tyvek disc under the landing motor? It will protect from rogue sparks, will blow away on ignition, and is of negligible mass. Plus it's basically free if you get the right package delivered!
Do it! I'd be right there with you on RUclips if I'd ever remember to turn the damn camera on! I'm horrible at recording the data but I get good results usually! Thanks Austin! Congrats on the near successful landing.
Don't know if it's too late but perhaps have the rocket tube more or less separated from the legs by means of a slide and spring so that when it lands it acts as a buffer. Kind of like what's used to reduce recoil in rifles. That way at least the initial impact would be dampened and controlled, rather than have the variable of the ground.
Hey from France, this is a total success! So near of perfect landing by relatively simple method.... 1ll is in for beat the best spaceX landing in near future. Now you should négociate your actions in spaceX or you will beat them and buy them a day. Let's go you've done incredible job 1nd the full success is in your hand ! 😎
I launched rockets as a boy., but this is absolutely amazing. Well done young man. Thanks for sharing your story with us that are your fans. Brilliant idea.
You know Elon is recruiting right. part of the recruiting process was explaining how you over came an engineering problem. your in a job for life with this project alone, ive not even looked at your other stuff. This is another level, love it.
Have you consideref the vehicle is not heavy enough? When you are going into "Hover Mode" near the surface, the thrust of the braking rocket is churning the surrounding air up as it is deflected from the surface. You can see part of this in the exhaust plume. It seems the small pressure imbalances and rotors are destabilizing the vehicle after the motor burns out. Your problem may be micrometerological. My compliments on your efforts.
Here's a thought: How about greatly lengthening the landing legs and when the first leg(s) touch the ground, allowing them to partially and differentially retract with pneumatic shock-absorbers that can then g r a d u a l l y re-align the rocket to the vertical (by lifting it from the low side(s)) after landing?
Rad! Maybe give yourself a bit of an advantage, so you can succeed a lil quicker? -Find a sandy beach. Once your dial in your tune/code there, then switch bouncy grass.
The spikes on the landing pads should be 3 inches long to stick in the grass and hold the rocket upright when it lands. The spikes will act as a shock absorber as they penetrate the grass and compensate for the uneven ground. Problem solved.
I saw that you use Grafana for some of your graphs. Maybe you can wire an alert firing to the flight abort for more options when to abort a flight additional to the checks you have in your software. Could help you with that and real time telemetry streaming to grafana if you want to.
You could probably do much better than the 4 Hz update rate you showed for the GNSS vertical velocity if you switch to some kind of rtk-capable receiver chip. Even without modifying the ground station to transmit RTK correction factors to the rocket, they still generally provide a much faster update rate, and if you do set it up with an RTK ground station, that will dramatically reduce the amount of noise on the GPS data. Might not be worth the cost for your application specifically (e.g. the ublox ZED-F9P is about $170 compared to the $30 ZOE-M8Q you're currently using), but the difference switching to a better GPS receiver is actually quite significant.
Joe you've done man! This is the perfect pitch to investors or even government, the flood gates are soon opening, wow! Am happy for you, you've worked hard to get where you're. Congrats 👏👏👏👏
Why don't you use 2 motors so that you can control the thrust. Like when you want to decrease the thrust they can face opposite to each other a little bit. I do not know about the complications but I think that you will be able to land the rocket with 2 motors
It looks very nice and performs but the reaction wheel vibrations might interfere with the control system. Maybe looking for a high torque brushless motor or maybe reworking gearbox? Or just using metal gears and ball bearings. Anyway, accounting for GNSS and IMU locations relative to CoG is very important for good kalman estimation. Another thing which I heard on one class is that sometimes a good location of IMU sensor can improve control loop. If the rocket flexibility is not negligible and there is angular rate feedback the different IMU positioning might help counteract the flexible modes. For the legs I think you would be good with some damping. Some flexible movement of legs is not bad if you can dampen it, then maybe there would not be as much jumping.
Don't forget, the smaller the rocket is, the faster it will try to fall sideways, and the harder it will be to land! (Imagine balancing a tall broom, and then imagine balancing a pencil)
It didn't fall over from the grass it fell over from the sideways momentum that was not bled off before the engine cut. I now I am not telling you something you don't know but you need a little more burn at the end to kill the sideways motion. You did say that tuning was difficult. But great job that rocket is great.
could you simply add a 2nd GPS receiver on the other side of rocket body at center of gravity ? Moreover, would a little helium in say the nose cone section, etc., help to stabilize the landing diverts? anyway, great vid here, Joe! I watched twice just to better follow your description of engineering going on. Best of luck
This is absolutely pure genius. I can't imagine any rocket company wouldn't want to hire you. Some of your mannerisms and speaking patterns, and even your looks, remind me of a young Elon Musk. :)
dude you should launch them on a hard and polished surface like concrete , thats why your landings all ways bounce of grass and here is another idea, why dont you add tiny springs in the landing legs so when it lands it can absorb some of the shock
incredible project, kudos!!! i bet you could build a real rocket too if you had the funding :) ..just a thought, when i see it bounce of sideways, maybe it is because your landing gear travels sideways while compressed. maybe it should just travel straight upwards, check blue moon landing gear, not sure but i guess it has long travel and less sideways movement, and you could use booth on grassy surface good luck with your project!
How much dampening does the landing gear offer? It might be clunkier but maybe adding small diameter air shocks would help relieve some of the bounce-back
Very good work. But we stick too closely to the rocketry standards established in the first half of the 20th century, without considering possible aerodynamic modifications, necessary to establish the new parameters, such as the return of the rocket to the ground in a completely safe way. To achieve this, I think, the body of the base stage must be wider, to contain the deployment of "sustainers" and pop-up ailerons that guarantee the center of gravity of the whole body, and this must be thought with variations in the speed of the winds that could tip the rocket on the descent ... I think that a set of 3 to 4 "rings" of mini ailerons, auromatic emergence, interleaved inverted, plus the weight averaged in the first third of the rocket base would achieve a very safe straight stabilization. Then, the 4 to 6 emergent legs, with springs or pneumatic system that sustains the impact with the ground according to the total weight of the vehicle ... Fascinating work. A smart and more economical way to find great solutions to very large, and expensive, problems ...
Within "A meter of the ground" doesn't sound like that much (and it's not, and it wouldn't be for a bigger vehicle) but we're talking about twice the height of the vehicle. Don't get me wrong I love the video I just couldn't help but think "that's a very small margin of error, and yet, a very big margin..."
Extremely great job, Joe! It seems, the remaining horizontal velocity flipped it down at the end. Nevertheless high respect for your decent construction!
You can make it easier if u make a little compressed liquid fule engine like this you will control the thrust and like this all of your problems will be solved
Obviously, work will need to be done to determine how much air needs to be outgassed by the shock absorbers and at what pressures to properly tune the landing system for appropriate reliability. My point is that, due to the rocket's inherently unstable pencil-on-head landing configuration, virtually ALL mechanical rebounding needs to be avoided!!
I know I'm probably over simplifying this but your problem is not in your design it's in the rocket motor itself. That is your Achilles heel, because if you had a more precise motor cut off and more importantly throttle response for the motor your bounce problem and inconsistency would be solved.. From the outside looking in perspective of course on my end it seems so simple smh!! But to hear you explain it your approach is simple too.. If its that simple then why haven't you consisting landed these rockets yet?? Well simple simply ahhhhh forget it,,,, awesome job young man!!👏🙌👏👏
Have you thought of using multiple GPS antennas to a comparator that feeds the smoothed data to the Navicomp. It's been 20yrs since I last had to think about this type of problem and I"m sure there are more that 3 types/grades of antennas now, so, my initial thought was to have low grade antennas at the extremity of the rocket (one Nose, two outward facing level with the motor output) and a minimum of three high grade around the core ( if too noisy, do pairs low grade antennas, offset at 200-400mm high/low of core, so four, six or eight
Ahh damn that landing was so close! Though I’m always curious as to where you got that hoodie? If you bought it off the internet, could you send the link by replying to this? And if not, how’s your get it?
I think this is the most complex project I have seen on RUclips it's incredible. Can't wait to see it land on a model barge on a lake!
Watch wintergatan marble machine x building episodes
Definitely complex, but wintergatan takes the cake
You should check out applied science diy electron scanning microscope.
@@TerebitMedia +1 Marble Machine
I agree this YouTune Channel is amazing... equally interesting and challenging is.
copenhagensuborbitals.com/
When you are about to land a bottle flip but your then friend hits it over
I had a struggle reading this, but no problem understanding, lol
Lmao they're no longer friends because of their past tense friend hit the bottle over.
Hahahhahahahah
2 terabytes for scout E, imagine the data SpaceX generated when they were testing the stage 1 landings of Falcon 9 👀
At least Petabytes lmao
@@falco830 lmao think about starship
@@tb46475 well Falcon heavy is same as falcon 9 they've just strapped 2 f9 like boosters on the both side of falcon 9 first stage but starship is totally a different thing
i'd imagine it to be 100-500 terabytes. starship could be about 1.2-4 petabytes.
20 computers worth of data! (With 2 TB of data)
When you land one, I’ll be waiting for “How Not to Land a Model Rocket Booster”
Lol
Yes please
The entire time the motor ejected out, and the rocket was about to land, my heart didn't beat once.
space x: WRITE THAT DOWN! WRITE THAT DOWN
Well they already have booster landing legs
@@kellanfeng r/wooosh
I mean u should say that to blue origin..
@@averageperson666 How was that a woosh?
@@kellanfeng You missed the joke, that's how r/woooosh works
Everyone: noooo u can’t propulsively land with solid motors!!!1!1!!
Joe: haha sine wave diverter go brrrrrrr
i think and hope he makes you a big youtube full
I've seen far crazier stuff done with solid motors. www.mda.mil/video/FTM-44%20Public%20Release%20Video_20-MDA-10599_web.mp4 is done entirely with solid motors, for example. Still, extremely impressive for a non-military budget!
@@WhereisRoadster what is it?
I don't think he will ever properly land a solid motor rocket, but he is laying all the groundwork. If/when he switches to liquid fueled rockets, that he can vary the thrust and shut off at the right time, he'll nail the landing easy.
@@roccov3614 I think he will if he does some more math and times the start time and end time and syncs it with altitude
engineering stuff like this is always super interesting. subscribed for rockets and staying for super rad vids.
You have done an amazing thing. This is amazing. It doesn't matter if it sticks the landing. When I was in Jr high school, we used to talk about being able to do this in the rocketry club.
I was adamant that it couldn't be done at the scale of modelling we had back then (1982).
When I saw SpaceX do it , I felt like my opinion was verified. Not on the model rocket scale. You have proved me wrong, and I'm glad you did.
Wow, Joe! Incredible to see the work you have been doing...and harvesting from interns! Terrific progress, you are closing in...”vanishing decimals of accuracy.”😎
7:46 😳 I didn't even realise that was intentional.
amazing, is’t it!?
Everything about this flight screams "abrupt chaos"
welcome to aerospace
@Nicholas Rehm How's your SN8 model going?😂
This will without a doubt be one of the most popular channels on RUclips.
for the spark protection system, it might be doable with just a disk of wax paper or foil. sandwich the paper between the lift and landing motors have it slightly oversized so that it doesn't fall through the hole, when the landing motor fires the pressure should blow it out or just punch through it.
To avoid the problem of the propulsion motor potentially igniting the landing motor, why not use E15-0 and plug the top with epoxy ? This way there will be no delay charge burning which could ignite the other motor.
When I was young, I was under the impression that I was kind of smart. Weeeellllllllll... maybe not so much.
😂😂😂
You are smart in your own way.
the fact that people are doing interns tells how sucessfull u are
Hats off to you, I haven't followed the whole build, I just love space stuff and found your video.
Congratulations on the work so far 👍
Dude, this is insane. Keep it up!
On the topic of bleeding off thrust: Why swing on one axis when you could swing in both the x and y axis? (a circular sweep pattern) At the end of the 360 degrees(and then negative 360 degrees), you would have canceled out all of the forces. This swinging in a circle the thrust vector can avoid passing through the origin. The circle around the origin can be larger( to bleed even more thrust) or can be small( to add more thrust). Plus, if roll is introduced you already have a method to handle it.
too unstable
Glad I showed up for the Space X shareholder meeting. Always awesome
You could insert a pin which comes out after engine ejection which will just go 20 cm inside the ground to stabilize the rocket when it is on the ground.
Nice project, very well done. Move your antenna, that sounds very smart, and add two more brake fins. This will let your first motor fall away more quickly and help stabilize the orientation of the booster before your landing motor fires.
RIPS: Rogue Ignition Prevention System: Tiny square of blue painter's tape.
Also happens to be the same solution as the FAMID: Family annoying mouse impingement device.
Place on the bottom of a laser mouse. People from the pre mouse ball generation never think to look under the mouse.
A wild thought: When the rocket tries to land straight the issue may be with the solid propellant. The level of thrust control required is possible with Liquid propellant.
Brilliant approach to thrust control on landing! Haven't found subsequent video yet, but I'm thinking GPS in both nose cone and center of mass. If tilted >5° from vertical, use com GPS input, else use nose cone GPS.
In short you need to characterize the ignition delay, find out the maximum delay and use that to define the target height for ignition with minimum delay. Minimum delay = direct descent with burnout just before touchdown, with no diversion. As the delay gets longer it has to do a larger amount of diversion, in less time, and the software has to detect the time between ignition command and actual ignition then on the fly come up with a diversion profile that ends with the rocket vertical and zero horizontal velocity at burnout, at the ideal height.
The fix for possible accidental descent ignition is super simple. Pack the igniter into the nozzle with a piece of fireproof parachute wadding paper. That might also minimize the ignition delay variance by ensuring the igniter is pressed firmly against the fuel grain.
Nice work!
Have you thought about adding an extra damper such as a rod system.
Think motorcycle forks.
This would allow one section of tubing to flow into the next. Might be the final piece of the puzzle you need.
gnss isnt accurate enough to feed into your loop with any kind of certainty. you need some sort of lidar/camera system. or maybe RTK gps with a base station
It is. It isn't absolutely accurate, but relatively. It's always off by up to a few meters, but for a duration of a flight that stays the same distance and direction.
Dude... YOU ROCK MAN 💥 💥 💥 💥 You are great teacher aswell !!! Keep it up Sir thank you for your highly educational videos !!!
You should be very proud of your achievement, Brilliant work bro
Tyvek disc under the landing motor? It will protect from rogue sparks, will blow away on ignition, and is of negligible mass. Plus it's basically free if you get the right package delivered!
0:52 this would of landed if the landing gear was bigger, make the landing legs longer and wider and then it would most likely make this landing.
Do it! I'd be right there with you on RUclips if I'd ever remember to turn the damn camera on! I'm horrible at recording the data but I get good results usually! Thanks Austin! Congrats on the near successful landing.
Straighten some fish hooks to use as buffers without spring action, the barbs would also resist the bounce
Awesome job. Everything about it is spectacular.
Put spikes on the bottom of your landing feet to kill the landing hop. The feet will poke into the ground and dissipate rebound energy.
Don't know if it's too late but perhaps have the rocket tube more or less separated from the legs by means of a slide and spring so that when it lands it acts as a buffer. Kind of like what's used to reduce recoil in rifles. That way at least the initial impact would be dampened and controlled, rather than have the variable of the ground.
well the initial landing will still transfer all its force to the rocket body
I am from India. I Like your work and effort 👍
Try a spike on each leg that way ones it touches the ground with the momentum it should stick the landing.
He already said in another vid he won't do it
The man is back in action
Hey from France, this is a total success! So near of perfect landing by relatively simple method.... 1ll is in for beat the best spaceX landing in near future. Now you should négociate your actions in spaceX or you will beat them and buy them a day. Let's go you've done incredible job 1nd the full success is in your hand ! 😎
Definitely an A+ for effort!
11:30
The rocket knows where it is by knowing where it isn't, and comparing this with where it should be.
I launched rockets as a boy., but this is absolutely amazing. Well done young man. Thanks for sharing your story with us that are your fans. Brilliant idea.
Joe! I'm crying this is so amazing!!!
This is seriously AWESOME!
You know Elon is recruiting right.
part of the recruiting process was explaining how you over came an engineering problem.
your in a job for life with this project alone, ive not even looked at your other stuff.
This is another level, love it.
I think the legs need a bit of suspension or whatever it’s call to absorb energy and reduce bounce
Okay! We're making progress now. I'll tell my kids one day that I watched you, when you started.
Should mount a sensor which is capable of identifying ground approximation and communicate to the computer propulsion reduction on the landing.
Spring loaded extensions on your existing legs that flip out on deployment for more cushion
Have you consideref the vehicle is not heavy enough?
When you are going into "Hover Mode" near the surface, the thrust of the braking rocket is churning the surrounding air up as it is deflected from the surface.
You can see part of this in the exhaust plume.
It seems the small pressure imbalances and rotors are destabilizing the vehicle after the motor burns out.
Your problem may be micrometerological.
My compliments on your efforts.
Wow. That's very cool, it's like SpaceX
maybe if you replace that locking post on the gear with a friction damper. It should absorb instead of bounce.
Here's a thought: How about greatly lengthening the landing legs and when the first leg(s) touch the ground, allowing them to partially and differentially retract with pneumatic shock-absorbers that can then g r a d u a l l y re-align the rocket to the vertical (by lifting it from the low side(s)) after landing?
I'm lowkey excited for the day your rockets finally reach the karman line
Rad!
Maybe give yourself a bit of an advantage, so you can succeed a lil quicker?
-Find a sandy beach. Once your dial in your tune/code there, then switch bouncy grass.
I’m pretty sure that if you got to higher altitudes you’d have a lot more room to control the horizontal velocity
I legitimately think it could have stayed upright had it pitched over a little more after it started translating to the side just before touchdown.
It's amazing how 20y before rockets that self land is just a Sci Fi thing
The scout knows where it is at all times. It knows this because it knows where it isn’t.
all I know to say is... amazing.
The spikes on the landing pads should be 3 inches long to stick in the grass and hold the rocket upright when it lands. The spikes will act as a shock absorber as they penetrate the grass and compensate for the uneven ground. Problem solved.
I saw that you use Grafana for some of your graphs. Maybe you can wire an alert firing to the flight abort for more options when to abort a flight additional to the checks you have in your software. Could help you with that and real time telemetry streaming to grafana if you want to.
You could probably do much better than the 4 Hz update rate you showed for the GNSS vertical velocity if you switch to some kind of rtk-capable receiver chip. Even without modifying the ground station to transmit RTK correction factors to the rocket, they still generally provide a much faster update rate, and if you do set it up with an RTK ground station, that will dramatically reduce the amount of noise on the GPS data. Might not be worth the cost for your application specifically (e.g. the ublox ZED-F9P is about $170 compared to the $30 ZOE-M8Q you're currently using), but the difference switching to a better GPS receiver is actually quite significant.
Those landing manures are done by spaceX 🔥🔥👍👍
Joe you've done man!
This is the perfect pitch to investors or even government, the flood gates are soon opening, wow!
Am happy for you, you've worked hard to get where you're. Congrats 👏👏👏👏
Why don't you use 2 motors so that you can control the thrust. Like when you want to decrease the thrust they can face opposite to each other a little bit. I do not know about the complications but I think that you will be able to land the rocket with 2 motors
It looks very nice and performs but the reaction wheel vibrations might interfere with the control system. Maybe looking for a high torque brushless motor or maybe reworking gearbox? Or just using metal gears and ball bearings.
Anyway, accounting for GNSS and IMU locations relative to CoG is very important for good kalman estimation.
Another thing which I heard on one class is that sometimes a good location of IMU sensor can improve control loop. If the rocket flexibility is not negligible and there is angular rate feedback the different IMU positioning might help counteract the flexible modes.
For the legs I think you would be good with some damping. Some flexible movement of legs is not bad if you can dampen it, then maybe there would not be as much jumping.
Don't forget, the smaller the rocket is, the faster it will try to fall sideways, and the harder it will be to land!
(Imagine balancing a tall broom, and then imagine balancing a pencil)
Ah wow.
Now build bigger one to flight 5km hight and land using engine.
This is an absolute masterpiecie
WoW! Great work.
Brilliant and well done!. + 1 subscriber and looking forward to your next video.
It didn't fall over from the grass it fell over from the sideways momentum that was not bled off before the engine cut. I now I am not telling you something you don't know but you need a little more burn at the end to kill the sideways motion. You did say that tuning was difficult. But great job that rocket is great.
could you simply add a 2nd GPS receiver on the other side of rocket body at center of gravity ? Moreover, would a little helium in say the nose cone section, etc., help to stabilize the landing diverts? anyway, great vid here, Joe! I watched twice just to better follow your description of engineering going on. Best of luck
This is absolutely pure genius. I can't imagine any rocket company wouldn't want to hire you. Some of your mannerisms and speaking patterns, and even your looks, remind me of a young Elon Musk. :)
The worst thing in solid rocket boosters is that you can't control the thrust that's why landing this kind of rocket is really difficult
Hybrid rockets would really be a great move forward. They have a huge amount of power.
mayor, sky be blue
and your wind below
dude you should launch them on a hard and polished surface like concrete , thats why your landings all ways bounce of grass and here is another idea, why dont you add tiny springs in the landing legs so when it lands it can absorb some of the shock
i dont understand why everyone is wanting to add elastic systems to the legs. the springs will just add more bounce
incredible project, kudos!!! i bet you could build a real rocket too if you had the funding :)
..just a thought, when i see it bounce of sideways, maybe it is because your landing gear travels sideways while compressed.
maybe it should just travel straight upwards, check blue moon landing gear, not sure but i guess it has long travel and less sideways movement, and you could use booth on grassy surface
good luck with your project!
How much dampening does the landing gear offer? It might be clunkier but maybe adding small diameter air shocks would help relieve some of the bounce-back
Very good work. But we stick too closely to the rocketry standards established in the first half of the 20th century, without considering possible aerodynamic modifications, necessary to establish the new parameters, such as the return of the rocket to the ground in a completely safe way. To achieve this, I think, the body of the base stage must be wider, to contain the deployment of "sustainers" and pop-up ailerons that guarantee the center of gravity of the whole body, and this must be thought with variations in the speed of the winds that could tip the rocket on the descent ...
I think that a set of 3 to 4 "rings" of mini ailerons, auromatic emergence, interleaved inverted, plus the weight averaged in the first third of the rocket base would achieve a very safe straight stabilization. Then, the 4 to 6 emergent legs, with springs or pneumatic system that sustains the impact with the ground according to the total weight of the vehicle ...
Fascinating work. A smart and more economical way to find great solutions to very large, and expensive, problems ...
Within "A meter of the ground" doesn't sound like that much (and it's not, and it wouldn't be for a bigger vehicle) but we're talking about twice the height of the vehicle. Don't get me wrong I love the video I just couldn't help but think "that's a very small margin of error, and yet, a very big margin..."
Dude you are amazing! How come you're not working for Space X already??
Awesome Vlog keep it up its really good stuff thank you for sharing
Extremely great job, Joe! It seems, the remaining horizontal velocity flipped it down at the end. Nevertheless high respect for your decent construction!
You can make it easier if u make a little compressed liquid fule engine like this you will control the thrust and like this all of your problems will be solved
Might try making the legs on the landing gear longer
Wow !’
Great work !!!!!!
Wow great engineering
One of the more impression things I have ever seen. Why rocket companies aren't beating down your door is a mystery and tragedy.
need everyday astronaut to live stream the next attempt
i like your funny words magic man
Obviously, work will need to be done to determine how much air needs to be outgassed by the shock absorbers and at what pressures to properly tune the landing system for appropriate reliability. My point is that, due to the rocket's inherently unstable pencil-on-head landing configuration, virtually ALL mechanical rebounding needs to be avoided!!
I know I'm probably over simplifying this but your problem is not in your design it's in the rocket motor itself. That is your Achilles heel, because if you had a more precise motor cut off and more importantly throttle response for the motor your bounce problem and inconsistency would be solved.. From the outside looking in perspective of course on my end it seems so simple smh!! But to hear you explain it your approach is simple too.. If its that simple then why haven't you consisting landed these rockets yet?? Well simple simply ahhhhh forget it,,,, awesome job young man!!👏🙌👏👏
black powder is kinda imprecise on it's own, remember the mythbusters episode where they were trying to get two muzzleloader minnieballs to collide?
Have you thought of using multiple GPS antennas to a comparator that feeds the smoothed data to the Navicomp.
It's been 20yrs since I last had to think about this type of problem and I"m sure there are more that 3 types/grades of antennas now, so, my initial thought was to have low grade antennas at the extremity of the rocket (one Nose, two outward facing level with the motor output) and a minimum of three high grade around the core ( if too noisy, do pairs low grade antennas, offset at 200-400mm high/low of core, so four, six or eight
One of these days something is gonna click and it’s just gonna work
Ahh damn that landing was so close! Though I’m always curious as to where you got that hoodie? If you bought it off the internet, could you send the link by replying to this? And if not, how’s your get it?