The dream of flying into the air may have got some of us into trouble, but for most, it remains elusive, because the safety, regulatory, and training framework surrounding powered flight makes it unsuitable for the faint-hearted. [Justine Haupt] may have delivered the simplest powered airplane with her Blimp Drive, which is a twin-propeller electric attachment to her paraglider, which allows her to launch on her own and maintain the flight while soaring.
It takes the form of a carbon fiber tube, with a large drone motor and U-bolt connected to each end of the pillar, and a set of brackets with a carbon fiber center laid on the 3D printed form, and the battery and paraglider harness are connected to these brackets. The whole device is light and quiet, and because there are two counter-rotating propellers, it does not have the torque problem that will affect a single propeller aircraft.
At Hackaday, we are not aviators or paragliders, so our impression of the aircraft in use does not come from the perspective of the pilot. But its simplicity and ease of entering the air seems unmatched by anything else, and we have to admit that it is a bit envious, just like her test location in the video below when she flies over the beach.
If you recognized Justine from past Hackaday articles, then you are on the right track. Perhaps the most memorable thing is her rotating phone.
It looks like it can be made with some prop guards. When encountering turbulence and being hit hard, it is too easy to reach in (unfortunately, if it is rare, the reality of paragliders and the reason I prefer unpowered aircraft, it has rigid wings and glides less like bricks than Piece)
Yes, I'm not sure if a traditional paramotor installed behind the pilot is great, but in my opinion, if the boom starts to move on any axis relative to the rider, then it can easily attack the flesh or rope. Fear.
But you have to admire its simplicity and elegance. Anyway, I'm too scared to play any kind of parafoil :)
Ouahh, toute la Moderate d'une grande's intelligence, you have to respect it! «A weekend project», remises en Question Permanentes, partage d'expérience totalement transparent... Je suis bluffé!
Thank you for sharing your amazing ideas in such a humble and self-critical way! Wisdom and craftsmanship (wo) manship can be the best example of what can be done together. My real thoughts on engineering. Fly safely and enjoy your toys!
The propeller will definitely need to rest when it is not working to reduce resistance (it is better to stop in a horizontal position to align with the tube). Otherwise-very cool.
No, fixed/locked/stuck props cause more resistance than freely rotating props.
The resistance of the propeller during stationary/idling depends on its pitch and diameter.
Small-diameter propellers (such as those on sailboat motors) usually have much less resistance when rotating freely.
Large-diameter propellers (such as slow-flying remote-controlled aircraft or paramotors above) usually have less resistance when locked.
Interesting research on this topic: https://docplayer.net/30166251-Stationary-and-windmilling-propeller-drag.html
I have an NRG powered hang gliding. It has a strut fracture because a free-running strut generates resistance and will not break the strut landing if it is horizontal.
It would be great if the props can reversely rotate and charge the battery when it is strongly raised. You might get record-breaking flights this way.
Impressive efficiency. Nearly 20 horsepower is roughly equivalent to the energy of a car driving on a highway.
There was a video on FullCharged last week about a woman walking around the UK with an electric paraglider before the COP26 meeting https://www.youtube.com/watch?v=WYA53AV2T2k
Sadly, they had an accident that resulted in one death and Sacha Dench was injured. https://www.theguardian.com/environment/2021/sep/20/climate-activist-sacha-dench-injured-and-collague-killed-in-paramotor-accident
This looks very simple and neat. Can anyone talk about the safety aspects of adding power to paragliders?
It may not be the flying car we promised, but it may be a smarter solution.
Paraglider + fan = powered paraglider is already a very important thing for those who want to paraglider but do not have hills and prepared hot air. ...Although it usually ties the gasoline engine directly to the cage
Electric paragliders have existed for several years. I really want to learn paragliding, but it seems that every time I want to start learning, there will be some articles about how paragliding died because of this or that, and I am scared.
Don't let it stop you. Everything is risky. The individual riding and motorcycle terrified me (well, other road users). But I like flying PGers. you only live once. Be a wise, risk-averse pilot, I believe you will.
Thank you, I'd better save some cash for training, licenses and electric paraglider kits.
Although I like electric motors very much, I strongly advise against using them for paramotor sports. I have studied them for many years and finally understand why pilots avoid using electricity for ventilation: they don't give you time to really develop your skills. The flight window of the paramotor is already very short, and the battery significantly shortens these flight windows. I will stick to the 2-stroke now, accumulate my experience, and then maybe use electric as a backup device in a few years.
In other words, it is very effective for her, because the electric motor just helps her keep flying. She can soar on the coast for hours without a motor. If she ventured too far away from the ridge, these motors could help her stand up again—giving her more freedom.
My favorite part is the two prop design! I have dreamt of such a person for some time. My motor produces a slight torque when my motor is turned on and makes me turn to the right. The offset rotation here eliminates this. I like it!
disagree! Most flight training involves take-off and landing. Just flying around in the sky is the easy part. Also, take a look: with a gasoline powered parachute, you have more endurance than most pilots really want, so you never have a reason to learn how to soar. With this energy-limited setting, you are almost as motivated to search for hot air as in a glider, and there is no need to hire personnel to pull you to a useful height.
The main problem with batteries is that they are heavy and maintain the same weight throughout the flight. If you have a hard landing, this is a problem. Usually, on a gas powered parachute, your fuel may be running out, so your body weight is much lighter.
Those rotors were very close to the line of her wing, and the moment of relaxation when she took off could be catastrophic.
See Tucker Gott's latest "car crash" video for a man who cut his finger in this situation. I like this project, but my goodness, this is a dangerous (hopefully) first prototype.
An old professor of mine was sure that you could use a small number of EDF units for this, but ignored their inefficiency. The slower the air you push back, the less energy you give it...
If the design is correct, the duct fan is more effective than the fan that is not in the duct under other conditions. It also helps to maintain the limbs.
Pipe or no pipe, would like to go!
Duct fans will be the way forward, and I think so too. It also helps prevent fingers and cables from entering the fan. :)
In addition, you can put the battery in the tube. Less loose things.
I am also thinking: the weight and torque of these engines will not be so high. So the tube is easily square, I think, this means: more battery space.
This makes me want to try paragliding by myself. :P
In fact, she suspends the battery under the tube to help locate the fan is a very important design aspect. Anything else requires a stronger coupling to maintain direction, which brings risks during rough landings and incurs weight costs.
Her design is very reasonable.
The absolute worst case is an engine failure. She will spin around herself faster than she can turn off everything.
Her throttle is configured as a dead man switch. In this case, all she needs to do is to release the throttle lever to solve the motor failure.
Nevertheless, the engine output at takeoff, like in most two-plane aircraft, is the worst thing, and the fact that you can cut off the power quickly does not help you much. You will still hit the tree that deviates from your intended climbing path.
This is where I am worried about this configuration. During takeoff, you will be at/close to maximum power, so if you have a motor disconnected (for example, poor wiring/loose connector vibration), you will suddenly experience huge torque steering problems. Even with a single motor paramotor, this is a problem; I can’t imagine what happens when you have a huge moment arm.
I have always dreamed of flying and have skydiving several times. Having a powered parachute is on my wish list because I think it is a very simple and safe way. In the worst case, the motor turns off and you just slide it back. You have hung on the parachute.
Then Grant Thompson died. I'm not saying don't do this, or that it's too dangerous. But this is obviously not a safe walk in the park like I imagined. It is still flying. Therefore, please respect the height and stay safe there!
Maybe when my children graduate and can support themselves, I will relive my old dreams.
A powered parachute is completely different from a paraglider. Powered parachutes, at least when they are introduced, are actually a kind of parachute, which is strapped to a tricycle with a fan. These parachutes have a very low lift-to-drag ratio, which is suitable for their application, that is, let you land on the ground fairly quickly, and the lift is just enough to give you the ability to choose a landing site. Therefore, the tricycles they are connected to must be equipped with very powerful engines to enable them to fly. For example, modern paragliders have an l/d ratio of about 10 or 12, which allows them to soar on slopes and even capture non-slope hot air in favorable weather.
Answer title: Paper airplane.
You beat me! B^)
(Remind the plot of Phineas and Ferb, they made a pulp airplane', or the plot of the World Tour, they used Ferb's carefully folded world map to make a large paper airplane)
She made an interesting accessory and was happy to see someone participating in such a project, but she also commented that she had an epiphany when creating this accessory for standard paraglider equipment, as if it did not exist, as if it She invented the same. As far as I know, for at least 7 years, a German pilot/entrepreneur has been manufacturing and selling electric motors/prop kits for launching assistance and extending the free flight time of paragliders. These kits are very advanced in appearance and combined with standard off-road safety belts, with props in the middle to avoid the possibility of cutting off the line and folding during launch or landing when the power is not on. There is also a powered paraglider device provided as a standalone kit, which can provide more than two hours of powered flight time. These devices have been used for nearly 40 years, but I know this is not what she wants. Three other startups I am familiar with have also used drone components for electric assisted paragliders
The only thing I saw right away is that these carabiners are very fragile when fixing the battery cells-they don't have any important ratings, and although the weight of the battery may not be that big, it does bounce, give them Come extra pressure.
So, the reverse in "counter-rotating propeller" seems a bit wrong to me, because "reverse-rotating" sounds better IMHO. Guess what-I was right and wrong.
If you want to believe Wikipedia, these two terms do exist and have different meanings: – [Counter-rotating_propellers](https://en.wikipedia.org/wiki/Counter-rotating_propellers) >= Two separate propellers rotating in opposite directions . – [Url=https://en.wikipedia.org/wiki/Contra-rotating_propellers]Contra-rotating_propellers[/url] are two propellers on the same shaft, stacked together, rotating in opposite directions to each other.
-> The article can be corrected if you want, I have learned something. thanks
(Test markup-url and bbcode-url here because HaD does not provide syntax help)
HaD only uses basic HTML tags.
Things like "a href", "/a"?
Perhaps the reverse rotation is related to the Nicaraguan rebels. B^)
(If this is how you want to rotate it.)
Has it boosted your spirit?
If you use a single motor like most paramotors, it might be simpler.
All she needs to add is a GPS guided choot to put down the transmitter and guide it home.
Good, but does she have a lover? B^)
I think this is an illusion.
Don't worry about the torque on the paramotor. The torque of the existing single-motor/single-propeller device is balanced by a slight movement of the pilot to one side. Instead, this arrangement puts the propeller in the most dangerous position, and if the pipeline is cut, it will reach the pilot and the pilot immediately. This is interesting, but traditional propellers with traditional shields do better in these two areas.
You can compensate for it by weight transfer, but that doesn’t mean you don’t have to worry about it. I have seen at least one very difficult takeoff crash. Someone did not compensate for it and ended up at a 90-degree angle to the path of travel.
0:07 That laughter! I think she didn't expect it to work.
I really like her explaining the "facts" of the project, there is no BS, no rotation.
beautiful! I am a glider pilot, flying on an airplane as an ask21 or Dg500 is amazing, anyway, your freedom to take off from a small piece of land, using only one wing made of tiny fabric and air, 2 The silent power of the motor is... magic.
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