@@KoalaGorp Very large plane and very tiny rocket, like bottle rockets. And you would need them to drop before ignition or you would not get your plane back.
You could have done a swing test to determine stability... Right from NASA... There is a relatively simple test that you can use on a model rocket to determine the stability. Tie a string around the body tube at the location of the center of gravity. (Be sure to have the parachute and the engine installed.) Then swing the rocket in a circle around you while holding the other end of the string. After a few revolutions, if the nose points in the direction of the rotation, the rocket is stable and the center of pressure is below the center of gravity. If the rocket wobbles, or the tail points in the direction of rotation, the rocket is unstable. You can increase the stability by lowering the center of pressure (increase the fin area) or by raising the center of gravity (add weight to the nose.)
Downside of the swing test is that it doesn't see the effects of UN-separated flow (when the fin acts more like an un-stalled wing rather than an air brake), and it doesn't indicate over-stabilised designs that will become unstable due to over-stabilisation (each swing becomes larger until the rocket becomes a turbo-lawndart). So if you have large flat surfaces, or flat surfaces near the pressure centre, the swing test won't cut it. And like Estes discovered with their X15 model recall in the 90s, the swing test also doesn't indicate misaligned surfaces, but CFD also doesn't detect manufacturing defects.
As a rocketeer of over 25 years, watching your endeavours is entertaining. Seeing you avoid what I would regularly use is also entertaining. I use avionics to deploy my parachutes. They work not on delay, like a timer, but on air pressure. Detecting a decrease and activating the ejection charge. Can be installed in the nosecone to add weight to the rocket to move the CG forward.
check what the world record for the fastest model aircraft is... clue... it doesnt have a jet engine, propeller or rocket... its powered by the wind and gets into the transonic regime.
Estes "BOMARC" missile model was a rocket plane, that would launch like a rocket then glide down. The "trick" was an jestisonable tube that ran up the center. This contained the rocket motor as well as a nose weight. When the ejection charge fired, this whole center tube would slide out, nose weight and all, to parachute down. As the center tube left the plane, a small thread would be released to cause the elevator to go from neutral, to a slighy nose up, to help the plane to glide, rather than "Lawn-Dart".
The "delta" winged version of the X-15 would be the best and most versatile to meet your goals and RC! 😱😁🤪👍👍🇺🇸 You could also fit it with a jet engine! 😁👍👍🇺🇸
Finally! I've been looking forward to some more of your content. This will be a great Friday evening pleasure for me and my boy to gather and watch! We get so much inspiration from your projects and daring adventures with RC crafts ❤
Thats a really nice build of the X15! And that landing was impressive! I look forward to seeing more! I flew an HP rocket on an I128 the other day and got mach 1.59 out of it and 10,500 ft AGL. It was a laser loc 38mm that I modified for electronics and GPS tracking. It cracked like a wipe coming off the launch pad.
I would absolutely love to see what a modern Rocket propelled aircraft would look like with today’s technology. Like a modernised ME: 163 or the X-15 with take off and landing capabilities?
Not only had it proven itself in high-speed flight. It has proven itself in high-speed lawn dart landing. While that comes with a bit of humor, it's also a testament to how well you built it.
Hitting the sound barrier is quite ambitious, you haven’t been able to achieve 200mph. Don’t you think that achieving 400mph first would be a better next milestone? More simply, the speed of sound is how fast vibrations travel. At 20 °C (68 °F), the speed of sound in air, is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or 1 km in 2.91 s or one mile in 4.69 s.
really great video! I do want to call out though that shooting amateur rockets through the clouds is a big no no. (your second vertical launch) source: I'm a level-2 certified tripoli member.
Nice experiment. If you want to continue with tying RC, instead of lead in the nose, you may want to consider using water in the nosecone as ballast that you can dump by RC to move the CG backward at glide/ flight time.
7:04 hmm... was it the wind going over the camera that did it? Well done, thats really cool!! Have you thought about folded wings and then turns into a glider at the top of ..... apergy?
Would be cool if you built a scaled down wind tunnel for this and other projects. I think it could be a very useful tool for validation too on your jet aircraft. As always your videos are great content, 👍.
You should use play doe for nose weight. While not as dense as lead it does not make any real difference you use mor to balance is all and you would never fill the nose cone with it before you had the weight to far forward. Me and a friend of mine use to build all sorts of rockets including ones that looked like planes and used play doe a few times we added bbs for a bb gun to the play doe to bring the weight up just a bit. Others used things like broken up steel wool or iron filings in the play doe
The Xyla Foxlyn channel has some really good info on constructing and 'chute packing for rocketry,she is a bit hyper but very good..................................
By the way if you need access to bigger model rockets all you need to do is mix saltpeter with sugar into a PVC pipe and cap the ends with cat litter I can tell you from experience it works very well most of my rockets have a range of 10 to 15 mi and the max altitude of about 500 ft I think you guys can figure out the trajectory from that
Where’d ya get the gas mask and eye protection from? I’m planning on building some model rockets out of boredom and want to know where I can get said stuff
Really disappointed that you were not really trying to go fast, Mach I, or faster. I have seen a metal rocket built specifically for that purpose. However, I did like the rocket plane that you chose for the attempt. Whould love to see you design, build and fly Mach I though!
ground launch stationary yes allows you to track gained speed but really you need a carrier plane to launch it from already moving and with at least a 15° climb when launched then rc rtb auto landing while rocket plane stage achieves speed 700mph is what were trying to stay under correct? or is 1400 mph acceptable ground speed?
You could launch the rocket from a larger model airplane, ignite the rockets and then land with the parachute.
yeah but that will be one heavy rc airplane to take off, and thats quite a bit more work
@@KoalaGorp Very large plane and very tiny rocket, like bottle rockets. And you would need them to drop before ignition or you would not get your plane back.
You'd probably reach higher speeds that way as you're not wasting thrust climbing, just going horizontally.
You could have done a swing test to determine stability...
Right from NASA...
There is a relatively simple test that you can use on a model rocket to determine the stability. Tie a string around the body tube at the location of the center of gravity. (Be sure to have the parachute and the engine installed.) Then swing the rocket in a circle around you while holding the other end of the string. After a few revolutions, if the nose points in the direction of the rotation, the rocket is stable and the center of pressure is below the center of gravity. If the rocket wobbles, or the tail points in the direction of rotation, the rocket is unstable. You can increase the stability by lowering the center of pressure (increase the fin area) or by raising the center of gravity (add weight to the nose.)
This guy is just a moron
Downside of the swing test is that it doesn't see the effects of UN-separated flow (when the fin acts more like an un-stalled wing rather than an air brake), and it doesn't indicate over-stabilised designs that will become unstable due to over-stabilisation (each swing becomes larger until the rocket becomes a turbo-lawndart).
So if you have large flat surfaces, or flat surfaces near the pressure centre, the swing test won't cut it.
And like Estes discovered with their X15 model recall in the 90s, the swing test also doesn't indicate misaligned surfaces, but CFD also doesn't detect manufacturing defects.
As a rocketeer of over 25 years, watching your endeavours is entertaining.
Seeing you avoid what I would regularly use is also entertaining.
I use avionics to deploy my parachutes.
They work not on delay, like a timer, but on air pressure. Detecting a decrease and activating the ejection charge.
Can be installed in the nosecone to add weight to the rocket to move the CG forward.
"High velocity Golf hole puncher X15" - soon in a shop near you 🎉
This was literally why the Estes model got recalled in the 80s
A new and unique hole every time!
I built the Estes model of the X15 back in the 80s before it was recalled for 'impact hazard'
I looked for this comment, I built this very model in the 90's
I'm still sore that my dad & I only went to buy it JUST after the recall.
check what the world record for the fastest model aircraft is... clue... it doesnt have a jet engine, propeller or rocket... its powered by the wind and gets into the transonic regime.
It's a glider that goes around in loops from the top to bottom of a mountain riding on wind currents
@t.iapsingh5651 it's not really riding air currents. It's called dynamic soaring. It's the same effect the albatross uses but on a bigger scale.
Estes "BOMARC" missile model was a rocket plane, that would launch like a rocket then glide down.
The "trick" was an jestisonable tube that ran up the center. This contained the rocket motor as well as a nose weight. When the ejection charge fired, this whole center tube would slide out, nose weight and all, to parachute down.
As the center tube left the plane, a small thread would be released to cause the elevator to go from neutral, to a slighy nose up, to help the plane to glide, rather than "Lawn-Dart".
Finally i was waiting for this the whole day
same
bro how did you coment that fast
@@JsVS202 hacks🤫
@@JsVS202 hacks🤫
Glider... Dynamic soaring... Have a google man. Its up your alley
@0:25 "Upgrading jets to push my airspeed record higher"
*shows hot gluing airframe*
Now we know you're a true engineer! 😁
X15 is definitely one of my favorite planes. I had a little toy of it and the DinaSoar
The "delta" winged version of the X-15 would be the best and most versatile to meet your goals and RC! 😱😁🤪👍👍🇺🇸
You could also fit it with a jet engine! 😁👍👍🇺🇸
That was awesome! The scream it made when taking off was sweet.
Next I bet he’s gonna make a Darkstar from Top Gun 2
2:31 thats a cute glider, would love to see more of it
Finally! I've been looking forward to some more of your content. This will be a great Friday evening pleasure for me and my boy to gather and watch!
We get so much inspiration from your projects and daring adventures with RC crafts ❤
Hope you enjoy!
@Project-Air We always do!
Spectacular indeed. What a video! Well done all involved.
i enjoyed this video. ty for fun.
love your vids man! Keep up the work!
Thats a really nice build of the X15! And that landing was impressive! I look forward to seeing more! I flew an HP rocket on an I128 the other day and got mach 1.59 out of it and 10,500 ft AGL. It was a laser loc 38mm that I modified for electronics and GPS tracking. It cracked like a wipe coming off the launch pad.
I would absolutely love to see what a modern Rocket propelled aircraft would look like with today’s technology. Like a modernised ME: 163 or the X-15 with take off and landing capabilities?
Checkout me channel for some rocket planes! 😁👍👍🇺🇸
Great way to start my weekend!
ProjectAir goes supersonic! Brilliant!!! (absolutely NOT joking).
Not only had it proven itself in high-speed flight. It has proven itself in high-speed lawn dart landing. While that comes with a bit of humor, it's also a testament to how well you built it.
You Rock!
The X-15 was so cool, and this model looks even better (I mean, the flat rudders are an improvement over the original wedge shaped rudders).
Can't wait seeing it as a RC
Damn. That whistling was mad. Good luck on the next launch. I hope one day you revisit the space shuttle project
14:49 u nailed aerodynamics of it, look this stright line dive dart
god damn thats quickd
Fantastic work James and guys! Well done! 😃
Stay safe there with your families! 🖖😊
We can't see but his face really said:
😶🙂😀😁🧐😯😲😟😣😖😢
-Oh no!
6:20
Hitting the sound barrier is quite ambitious, you haven’t been able to achieve 200mph. Don’t you think that achieving 400mph first would be a better next milestone?
More simply, the speed of sound is how fast vibrations travel. At 20 °C (68 °F), the speed of sound in air, is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or 1 km in 2.91 s or one mile in 4.69 s.
saw this video on my recommended like 25 mins ago didnt know it was posted 30 mins ago
Gongrats, great video!
Love it James!
YOOOOOO NEW VID FINALLY YAAAAAAAAÆÃÃÅÆÂÀÄ
How feasible would it be to use a mothership drop launch like to original aircraft?
I want that amazing mask at 11:33. It is insanely cool.
Fun video!
For an unfinished plane build, the aesthetics are insane.
Great project! 👏
TBS has a new wing you should check out for sure for speed
Awesome video Sir
Just wondering if you have an update on the second (behind the scenes) channel. Another great video. Thanks James 😃
Nice!!!
project air is one of the best
Love your videos! Very cool project. Maybe you don't want to abbreviate "centre of pressure" as "cp," as that has a different meaning on the internet.
I'm sorry but I laughed so hard when it went in both times. I still am rooting for your success
Awesome! (I am also in awe)
Wow! New video!
Damn is😂🎉
Build a scramjet engine and launch the roket with this roket.
Finaly a new very good video from a very good youtuber!❤❤❤
Is there onboard video of the dive?
really great video! I do want to call out though that shooting amateur rockets through the clouds is a big no no. (your second vertical launch)
source: I'm a level-2 certified tripoli member.
That's awesome, however could you make the Top Gear space shuttle work?
Cool shop👍. Congrats 🤩
please make a fighter rc plane jet with like air soft guns or nerf guns
love de vid
LETTES GOO ANOTHER VIDEO
Rocket!
Perfect passive stability during test flight 2 until the very end!
Well done team
Loving the content 👌
One word.
Damn
Nice experiment. If you want to continue with tying RC, instead of lead in the nose, you may want to consider using water in the nosecone as ballast that you can dump by RC to move the CG backward at glide/ flight time.
you should team up with FliteTest and have them build you a scale B52 to drop this from
That was impressive. Shame you're not gonna try an RC version. I think it would be quite impressive
7:04 hmm... was it the wind going over the camera that did it?
Well done, thats really cool!!
Have you thought about folded wings and then turns into a glider at the top of ..... apergy?
Could you make a camera pod with a periscope for the outside, to get the profile down?
Body of the camera inside, and in the "pod" only some mirrors?
I love the vid and the x-15
Would be cool if you built a scaled down wind tunnel for this and other projects. I think it could be a very useful tool for validation too on your jet aircraft. As always your videos are great content, 👍.
you need to make your own rocket motor. Sugar and potasium are great :)
You should use play doe for nose weight. While not as dense as lead it does not make any real difference you use mor to balance is all and you would never fill the nose cone with it before you had the weight to far forward. Me and a friend of mine use to build all sorts of rockets including ones that looked like planes and used play doe a few times we added bbs for a bb gun to the play doe to bring the weight up just a bit. Others used things like broken up steel wool or iron filings in the play doe
I kinda wanted to see this released from a level flying aircraft, like the real X-15.
7:23 BastiGHG!
Huh
My vote's for a Fireball XL5, including the horiz take off run on a rail track. (Did their bogies ever survive? : )
i love these vids
Cool
you should get your high power rocketry level 1 certification
i love this video
I get so sad every time you make a short video and don't fulfill the task of the video :(
looks like a rocket powered f104
put nitromethane in a jet engine to see how it reacts, I don't think anyone has done that
The Xyla Foxlyn channel has some really good info on constructing and 'chute packing for rocketry,she is a bit hyper but very good..................................
By the way if you need access to bigger model rockets all you need to do is mix saltpeter with sugar into a PVC pipe and cap the ends with cat litter I can tell you from experience it works very well most of my rockets have a range of 10 to 15 mi and the max altitude of about 500 ft I think you guys can figure out the trajectory from that
My first thoughts were: hope it has a strong fuselage… snap!!!
pls build 300 mph plane
imagine this on a car
took long enogh!
Where’d ya get the gas mask and eye protection from? I’m planning on building some model rockets out of boredom and want to know where I can get said stuff
Just call it center of pressure, not everything needs an abbreviation lol
Nice =)
U should make metal case so u can put better engine
15:02 I have to admit its one of very successful failed landing Ive seen so far on this channel.
Really disappointed that you were not really trying to go fast, Mach I, or faster. I have seen a metal rocket built specifically for that purpose. However, I did like the rocket plane that you chose for the attempt.
Whould love to see you design, build and fly Mach I though!
🎉
Where did you get the rocket thing?
Lessons learned? Specially with the apparent "failures" ?
I think every video would have a cut about the lessons learned.
reinforce your foam fins with a piece of carbon rod.
ground launch stationary yes allows you to track gained speed but really you need a carrier plane to launch it from already moving and with at least a 15° climb when launched then rc rtb auto landing while rocket plane stage achieves speed 700mph is what were trying to stay under correct? or is 1400 mph acceptable ground speed?