Add an electric motor. Use the water/bottle as an "afterburner"... have a race!

If you add dish soap to the water it will foam up during pressurization and give you a much longer "burn time" with a nossle. I used to do this with my 2 liter bottle rockets and they went so high you could barely see them. A dawn dish soap cap is also a perfect nossle for the rocket as well. Percectly centered nossle and it can withstand ~100psi (along with any carbonated beverage bottle). I used a silicone tube glued around a ball filler needle and that worked well with minimal leaks.

My age is showing, I remember the rocket I got for Christmas in the late 1950s . Rubber construction, X frame launch pad, add water to rocket, attach pad, pump air with small pump, then pull string to release ....it was January when my Father took me to the park to launch it, cold, patches of snow, near or just below freezing. Didn't matter we were doing it together, spray from launch, fell back on us, cold...I was a kid and thrilled and smiled and laughed, Dad did as well. Funny how little flying things, can bring such memories. Take care, keep building and helping others make future distant memories

Hey flite test why don’t you guys try to build the Milano from guardians of the galaxy that would be cool to see that fly in real life

I’m so glad to see these type of projects. It seems more like the old school Flite Test.

For more glide time, add a release mechanism for the bottle!!

Holy cow I used to have a Jammin Jet back when I was a kid, until my dad put a Cox .049 engine and motor pod on top, converted it to R/C and destroyed it by doing a loop and folding the wings under load.

This seems perfect for one of your STEM kits.

now try with a second bottle for added boost while in the air.

Josh: what about a liquid powered plane Me a gas and glow guy: you mean a fuel engine?

I have been waiting literally 15 years for this video. I first saw water rockets when I was living in Taiwan, and I've been dreaming of RC flight since I was a kid. If I had the time and money, I'd be deep into both of these hobbies now. Water rockets are OK for cost, but you have to build everything yourself. My RC planes keep proving that gravity is a nasty, destructive, and therefore expensive, force. If you guys are serious about, as you say, taking it to the next level (or way, way, way past what you could probably conceive as the next level) then google Air Command Water Rockets. With their water-rocket launch systems and your plane know-how, you could invent a whole new hybrid hobby.

I got hello fresh because of you guys and you got me into rc planes along with Peter sripol thank you guys 👑👑😀😀

Put multiple small bottles and release them one by one.

Project idea: make a flying house based on the movie “UP” Ps. I’m not sure if you have already done this, hope you see this comment, I’d love to see this in action

LOVED this video, over and over i was excited for each flight and shared the joy. Thank you for that. This video will be in the millions in less than a month

That’s what the hobby is all about. The smile it puts on everyone’s face. Good build guys 👍🏻

Take it up with an RC airplane and then have it detach and launch. 🔥

I feel like there's an opportunity to try to make this into a Bell X-1 or a Komet

Noah is really doing good - great addition to the team.

10:45 maybe the true liquid powered plane, are the friends we made along the way...

Drop an “X-1 type plane” with water/air after burner from an electric plane from height

when I first saw the title, I misread it as liquor powered airplane. this is still pretty cool though.

What about a vertical liftoff and folding wings that fan out at apogee and glide from then on?

This is a cool project! It looks like you have the Explorer pretty well dialed in. It would be interesting to see it scaled up to use a 2 liter bottle. That would present some interesting challenges with the structural strength of the aircraft and maximizing altitude given the initial weight of water. I believe PET bottles are burst rated for 120 psi so you have a good bit of room to go. Once you start approaching 100 psi you will want to come up with a method of launching that allows you to keep your distance from the bottle. I've blown apart pvc elbows on launchers near that pressure. It is easy to build a launcher that can pressurize the bottle and be released from a distance. It won't be easy to do the same and still allow you to release the pressure after the plane is in the air. A high start would come in handy to get it into the air. I'd like to see what you guys can come up with!

Aren't nitro's technically prepeld by a liquid🤔

Andrez and Noah are the luckiest guys ever. They get to put “Flite Test” into their engineering resumes

Well, that's one of my planned FliteFest projects down... I'm all for revisiting this by the way and while It didn't quite work, Team Boomstick for the win!

Try for longer integration time, maybe 3-4 sec. I remember doing this back in the 60s. A lot of fun. You guys are awesome!

Love the vids, make a 2 direction plane to fly 2 ways that would be awesome

It's what you imagine the jamming jet was supposed to be like

What nice humble and talented boys. 5 stars lads. Remember of the original FT episodes.

Terrific job with all the research and creation of two very cool planes! The first idea that comes to mind for an extension from here would be a two or three-stage version of the glider with reserve thrust to be deployed in stages. Maybe even drop spent bottles as you go.

Air hogs had a air powered glider that was pretty rad

It is always Alex doing the sponsorship in the same place every time.

This is one channel that never bores me

I had forgotten about jammin’ jets! We had one as kids - blocked off the safety valve, and used to get hundreds of meters of flight time

"But what we really learned about, was friendship."

I've scratch built almost all your single engine planes ( master series included!) And I'm only 13! ... thank you flite test😂

Once again, a video that shows why I love these videos... and why I love this zany group! Great fun!

Put a small over wing prop on the glider and extend the flight time. You guys are so bloody inspirational.

Flitetest: Let's make a rocket SpaceX: FFA: Viewers: That's Awesome!

How has it been you shoud do a character from planes (ripslinger)

Perfect comedic timing with jamin jet at the end. 🤣🤣

You made my day!!! I look up at the ceiling in my humble abode and eye an all white (still) FT Explorer suspended from a string strategically placed amidst the rubber bands holding the 3 channel wing on. My first build that I thought really looked great and I didn't manage to crash and mangle. I'm glad to see it return to your videos. Much has changed since those days and the days prior, but I'm still your biggest Fan!!!

Technically, every jet plane is liquid-powered by a liquid. A more accurate term would be liquid-propelled airplane.

I'm always a bit offended when they tell me to subscribe while I'm already am

You should definitely do an water propelled X-15 then launch it from a bigger airplane before firing the water-rocket. It would be so epic and the recreation of a legendary chapter of American airplane history.

Great video! You need to add a dip tube in the bottle that stays below the water line, to be able to use every last bit of the water before the air escapes.

Why did that conversation sound so scripted

Ditch the servo from the smart water bottle and fashion the bottle into a missile form. Link thrust release pin to missile/plane linkage so thrust is released just after separation from plane . . . You guys are amazing! just to think .. you could someday be launching quads in to battle from the deck a flying aircraft carrier whilst trying to avoid missiles being fired by a flying tank I haven't even seen that in a cartoon yet .. and you guys could make it a reality . . pretty cool

Brings back a lot of memories from childhood.

Loved it! Great job guys!

Remember the ZOOOM Rockets ? Propelled with Freon Gas. They ended that one quick. LOL

Man that facility is coming together beautifully.

Yay bottle rockets! Working as a STEM teacher and one of my favorite short projects was equipping the students with soda bottles of various sizes, cardboard, tape, hot glue, pipes and dowel rods. I just showed them the bare basics and then let them figure out the rest. By the end of the day most looked like it had been raining, but everyone had had lots of fun. ^^

I am so glad you guys did this build.

You guys just made my day :) The Jammin Jet was the greatest toy memory of my childhood.

I've been watching flight test since 2013 and I have to say guys you do one hell of a job I know I don't comment much but you guys deserve one for me today just for all the work you have done collectively to this point has been awesome keep up the good work

From almost day 1 this Old Man from North Carolina always saying you guys are awesome. Just unbelievable how far y'all have come having so much fun. 3:30am watching with my coffee. Love your channel. ✈️😎💝

Man these guys have the coolest summer jobs I swear :D

This is the success story of the year I’m crying

Cool plane with the FT Explorer conversion. The 90's commercial was a hardcore throwback.

I would like to see you do something with boomerangs. They have wings, fly with only the aid of a thrower and i think would make for an interesting video.

SUPERSIZE IT!!!! I had a bunch of those red and white rockets you were talking about (not very durable, especially when it landed on the driveway!). The video took me back many, many (and unfortunately), many years ago! Great memories!Thanks!

The fun is in the way you guys enjoy it so much.

Great episode , this is engineering at its heart , kids look at this and want to go outside and do it , that's what lights the spark for years to come.

Howdy FliteTest! Really enjoy your videos. Watching this episode really brought back some good memories for me. I used to be a Cubmaster for a pack of Cub Scouts. We used to do a water bottle rocket building project every summer. Those puppies would soar! We didn't use a launch pin, as you demonstrated. We would use a file to dig a small groove into the launch tube, and place a small O-ring around the tube in the groove. The O-ring would help ensure a tight fit with the bottle, and we'd pump up the pressure until the bottle blew off of the launch tube on it's own accord. No leaking "propellant" until the bottle flew. I had also read about another project where someone had used a 4' (could try an 8', I suppose) T-12 fluorescent lamp protector tube in place of the bottle. The benefit in this is to allow a longer launch tube which prevents the water from actually leaving the motor until it clears the launch tube. This allows for a longer acceleration time. And, the protector tube is much more aerodynamic. Like an arrow compared to a football. If someone got REALLY creative they could maybe put swing wings or pivot-into-position wings after the tube reaches apogee on the launch. As I said, just and idea...I haven't actually tried the protector tube idea, myself. But, try the O-ring for sure. I think you'll like that.

I really like the teamwork/engineering process format you're using. Your teach and inspire a lot of kids :D

Awesome video guys! I loved water rockets as a kid. Now I fly RC sailplanes and I think it's time to combine the two

Inspiring, thank you very much!

I've been watching you guys for so long and I'm 12 and I still love your videos. I still remember the first video Peter serepol was in!!!! love you guys keep making awesome videos!!!!!!!!!!!

Nice work guys! Rocket plane approved :)

Here’s a possible idea to expand on what you have already done. Using the “Jammin Jet”, how about doing a series of consecutive thrusts? Mount 2, 3, or more water bottles, each on its own switch, so that you could get a longer duration of thrust. For the Gremlin “water bazooka”, instead of launching the plane, launch a normal water rocket. Near the apex of the rocket flight, release an airplane/glider. Essentially, this would be like a 2stage rocket, first rocket is a booster to give it velocity and altitude and the second part is the smaller rocket or payload.

Greetings FliteTest Crew! This was an interesting video, and the challenge of building an RC airplane that is water pressure powered reminds me of one of my favorite summertime toys, which was most likely the original water rocket kit. It came with a specially designed pump with a rubber gasket and a release mechanism that you had to pull to launch 🚀 the rockets included in the kit, there was also a small funnel designed to fit the rocket nozzles, and each rocket had graduated markings so you could experiment with the amount of water you have filled the rocket with and then later you could repeat the results if you were observing closely what you were doing, and although it used a hand pump to supply the air pressure, I would just count the pumps. It was a lot of fun, but you did get wet, which was all fine on hot summer days. Recently, I have seen some amazing water pressure rockets on KZfaq, and some of them are multiple stage rockets that are reaching amazing altitude. Some were attaining more than 1000 feet. I think you should research the work they have done, and then revisit this project for a really spectacular set of flights. Your mission, if you accept, would potentially be super awesome. I know that you all are more than capable of making this happen, and you could also bring into the hobby, a whole new class of RC airplane technology. I am excited to see what you do with this. Thank you for posting this video! Please have an excellent and awesome day! 😎👍

Keeping with the school science experiment theme, I think we need a whoosh rocket plane with a water cooler jug.

you guys need to build a huge tower out there to launch free flight stuff from and really see how far some chuck gliders can go

That was an amazing catch, Noah!

That so cool. Nice to see boys together to.

Another great job guys

Love to see this again but somehow add the mentos thing to it. Maybe with a servo? That would be some power....

Build DLGs with detachable bottles and hold a competition! Discus-throw - "Fire" water rocket - Jettison bottle - glide as long/far as possible.

If they did this but with a Me-163 model it would be PERFECT!!!

It is so good to see new flute test vids come out. Really good channel got me into the amazing hobby. Great 👍 videos

This is awesome!!!

Awesome vid guy , way to think outside the box and make it work ! Obviously it’s not that surprising to me as all the work and things you guys come up with is top notch !! Keep up the Great Work and Vids !! 👍✌️

Back in the 50's there was something like this using water & baking soda, to build the pressure. Looking at what you've done here, maybe "Wing-mounted" twin bottles, or PVC pipes might work. And YES, I am subscribed!

Great fun, guys. I noticed in one of your close shots that the water was slashing around the midsection of the bottle. This caused the air to escape without the benefit of the water acting as fuel.

This was so awesome, took me back to my jammin' jet days too. Thanks guys!

Takes me back to 1998 for the first purple and yellow air powered AirHogs plane!! Loved that thing

This video was great! Really enjoy the explanations of the physics behind this one! Great Job!

since you guy's went all nostalgic I would love to see ya'll make a plane that flies using an air powered engine, like the "AIR JAMMER ROAD RAMMER" from the 80"s! it would provide 15-20 seconds of runtime if spinning a prop.please and thank you! love this channel!

Yeah that was awesome great design and it worked GREAT... I wondered if there was a second bottle and relief valve so that when you got up to height you could flick a switch and remove another valve and glide for longer.. Understandably weight would be an issue.... Enjoyed it guys.. Thumbs up

This was fantastic. I'd love to see more experiments with water and air power.

I don't know the Jamming Jet airplane but I do remember a water driven prop power airplane back in the 70s . Thanks for the video

90 degree angled pipe before the nozzle inside the bottle and you might get the water all out before the the air? might last a bit longer too! Awesome video as always!!

What about RC Air Hogs? Thats a childhood throwback for me!

16:15 and 18:12 I recently got back from Glider Flying School and this reminds me of that because we weren't towed up by a plane, we were launched up by a winch. 0-50 mph in 3 seconds and you get up to about 1000-1500 ft agl in 45 seconds. It's like a rollercoaster at first but then you get used to it.

That was awesome! I think you should try setting up multiple 16oz bottles on a plane and have them go off in consecutive time release

You all should try placing a rocket bell nozzle of a sort on your outlet. That should give you much needed control.

Kick it up and revisit it. I loved this