Need opinions on my IL-24 replica idea.

[PanzerOfTheLake]

So I was thinking about making an IL-28 replica with two of these engines and outfitting them with a custom afterburner (just for aesthetics):

https://www.racer.lt/item/powerfun-edf-90mm-ducted-fan-8s-1100kv-brushless-motor-12-blades-propeller-for-rc-airplane-plane-jet-24334.html

Also using two 6000mAh batteries:
https://www.lipo24.de/products/cnhl-g-plus-6000-mah-29-6-v-8-s-70-c-lipo-akku-mit-qs8-stecker?srsltid=AfmBOopXsppfcqNY7EOSWm4KEOWzR5oYc5 zPA83PSaHf9pVN67yF6eJI
My target weight is 4 - 5kg or lower. I would also like to add a couple of dummy bombs with flour. Additionally, the wingspan would be around 2.9 m, the wing area would be 1.5m2 (4.27 ft2, 9.51 ft), with the aspect ratio of 6. Since I have a short runway, I was thinking about equipping it with a small rocket booster to take off quicker using a dextrous & Potassium Nitrate.
PS: It's the IL 28, not the IL-24, but I can't edit the title.

What do you think about this?

[xviper]

This is purely my opinion only so take it with a huge grain of salt.
A 3M wingspan jet seems to be a fairly large EDF model. Add to that another 2+ kg of batteries. Are you interested in thrust at all? Is value pricing more of a concern for you? If you look at the static thrust numbers for the Powerfun, it's around 4.2kg per EDF. It's an outrunner. On the other side of coin, as an example, take the Freewing 8s 90mm set up, which is an inrunner. It puts out static thrust of 5.3kg/EDF, but it costs nearly twice as much.
How short is your runway? I would think that if it's at least 200 feet, the Freewing set up could do. The Powerfun may be "iffy". A rocket booster is an added variable/complexity. Since the runway is short, you should consider reversing ESCs so you can stop the thing before the end.
We were talking about the 90mm Yak 130 lately and it's a 1.2m span, 4.0 kg model. Your model is huge by comparison. 5.0 kg is doable but might be difficult. If it were me, I'd get the highest thrust possible just to cover all the bases.

[Evan D]

I think it would be a great project.

[PanzerOfTheLake]

This is purely my opinion only so take it with a huge grain of salt.
A 3M wingspan jet seems to be a fairly large EDF model. Add to that another 2+ kg of batteries. Are you interested in thrust at all? Is value pricing more of a concern for you? If you look at the static thrust numbers for the Powerfun, it's around 4.2kg per EDF. It's an outrunner. On the other side of coin, as an example, take the Freewing 8s 90mm set up, which is an inrunner. It puts out static thrust of 5.3kg/EDF, but it costs nearly twice as much.
How short is your runway? I would think that if it's at least 200 feet, the Freewing set up could do. The Powerfun may be "iffy". A rocket booster is an added variable/complexity. Since the runway is short, you should consider reversing ESCs so you can stop the thing before the end.
We were talking about the 90mm Yak 130 lately and it's a 1.2m span, 4.0 kg model. Your model is huge by comparison. 5.0 kg is doable but might be difficult. If it were me, I'd get the highest thrust possible just to cover all the bases.

Thanks for the reply!
Also, yes, I am aware that the model is huge, as for the fans If I have two of those batteries (one for each engine) I clod acheve crusing speed. As for the weight (aside from the avionics + batteries), I don't actually know how much it would weigh when it's made. As for your other questions, I plan to test the plane in a forest because there are, obviously, next no people and we have a road that is in an ok shape. As for the length, I don't know. The road itself is long, but there aren't many straights. As for the thrust at 70% throttle on both engines at a weight of 5-6.5 kg, I would, in theory, be able to cruise at a thrust-to-weight ratio of 1.03, which is very small. At 80% tough, the ratio would be 1.18 and at 90% would be 1.33. However, another problem is flight time, at 70% I would get around 10 minutes, at 90% about 7 minutes. Lastly, the cost, honestly, I don't know, I was maybe thinking of getting my friend involved (since he first mentioned that he wanted to make an RC plane). If he is onboard and IS willing to spend money, then our cost cap would be much higher. But I doubt that he would want that... Also, can you tell me how you get your numbers for length, wingspan and so on? Since I have very lack luster knowledge of aerodynamics and plane building in general, most of my numbers were made by ChatGPT. All of its equations were based on some assumptions that are unknown to me.
Again, thanks for the reply!

[xviper]

Also, can you tell me how you get your numbers for length, wingspan and so on? Since I have very lack luster knowledge of aerodynamics and plane building in general, most of my numbers were made by ChatGPT. All of its equations were based on some assumptions that are unknown to me.
Again, thanks for the reply!

My numbers come from the specifications printed in the webpage for the product (my eg. of the 90mm Yak 130). The static thrust numbers are also posted in the product webpage such as RC Castle. Of course, their numbers must be taken cautiously as those are generally provided by the manufacturers like Freewing, FMS, Powerfun, etc.
As an aside ...................... 10 minutes and even 7 minutes is pretty long for an EDF plane. Mine typically fly for 4 minutes and I'm good with that. Even my twin EDF, twin battery planes only fly for about 5 minutes with mixed throttle. Most of my EDFs cover a LOT of ground in 4 minutes. Flying an EDF close to a forest may be a real adventure.

BTW, here is a twin jet that somewhat resembles your project. This one is commercially available and mass produced. You can do a comparison of dimensions and power set up.

https://www.dynamrc.com/products/gloster-meteor-f8-v2-6s-dy8974

[PanzerOfTheLake]

My numbers come from the specifications printed in the webpage for the product (my eg. of the 90mm Yak 130). The static thrust numbers are also posted in the product webpage such as RC Castle. Of course, their numbers must be taken cautiously as those are generally provided by the manufacturers like Freewing, FMS, Powerfun, etc.
As an aside ...................... 10 minutes and even 7 minutes is pretty long for an EDF plane. Mine typically fly for 4 minutes and I'm good with that. Even my twin EDF, twin battery planes only fly for about 5 minutes with mixed throttle. Most of my EDFs cover a LOT of ground in 4 minutes. Flying an EDF close to a forest may be a real adventure.

BTW, here is a twin jet that somewhat resembles your project. This one is commercially available and mass produced. You can do a comparison of dimensions and power set up.
https://www.dynamrc.com/products/glo...8-v2-6s-dy8974

Thanks, man, really appreciate it!