Peugeot HX-3D

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After doing the designstudy of the Peugot HX-1 business jet, im still waiting for some electronics to show up in mail. When searching to find all i could about that plane, a "what if" design showed up on a sportplane. A guy M. McGee made a few scetches how he believed Peugot´s Design Department would make it, if did.
One of this scetch triggered me, also because the HX-1 plane feels stunning in many ways... couøld this give me same satisfaction?
And... of course, i couldnt stay away (?) and start build it/ (something similar) with adjustments to fit for easier build.
The HX 3D
Well, its a sporty sleek speedy plane, buildt as a mini style version with a wingspan at approx 750mm. Of course searching in my stash..... smallest motor i had free to use was a 2815 ... supposedly approx. 3-4 times thrust vs. total weight. I also got short of foamboard (ordered more) and reworked eg. a wing/fuselage parts i had from before, to get it more complete, when the idea was there.... a standard 2217 or less, would fit nicely in power.

This time, i also did make up every part (mostly) at the computer, and then have plans to share later. Not a specific hard plane build if build a plane in Master style.
A few trick done though, as i will try remember adress step by step in this thread.

Here is the scetch:

 

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The start:

One of the hardest parts to make - the rear end of fuselage! Its close to a fully cone with the tip approx 5mm wide. Hard to make such a small rounded cone in 5mm foamboard... its needs extencive work on a tableedge to get a satisfying result without kinks.
I decided to make the cone fully length without the cutout in front, to easier make it right to fit the former, and cut the rear canopyshape, and top of the former away after.

The two marks on the fuselage cone, is where thrustline is. And the reinforcingplate inside will get the elevator servo close to the end against former. Plane is buld as a 3ch (elevator, ailerons, motor.)

 

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The fuselage dont "follow" typical lines, eg. the belly aint flat, deepest /widest part is the where the former seen on first picture are. Then the shape of belly goes up again.. and even the "top" line dont follow a "flat" line.
On this picture its shown solution to get the forward former in correct place. (perfect to have made plans with sideprofile in full size, to control its correct...)

By my choice of motor, the firewall fits in front of the forward former vs length of cowl. If another motor is used, placement of firewall needs adjusted. Even possible make the "cowl" in two half to get it at place. Reason is front opening in cowl is only 30mm, its no place to even get a X- mount inside after build it. (motor needs come in place before front "cowl" is glued in place, (or could be made in two half, then possible. )

 

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profil thoughts of plan

 

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fuselage front sides done too, and inside fit perfect a 3 or 4S battery 1000 - 1500mAh .... and as written , motor mounted before frontcowl is done.

 

[GrizWiz]

Wow! Great job Roger!

 

[leaded50]

test of tailfin:
(here i did make possibility for rudder use, but changed later, to not use it. )

 

[GrizWiz]

test of tailfin:
(here i did make possibility for rudder use, but changed later, to not use it. )

View attachment 191156

Is that blood all over the nose?

 

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Is that blood all over the nose?

sharp knifes.... Should be called shark...

 

[rcbigtirepilot]

 

[GrizWiz]

Ouch 🤕

 

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finger hangs on, no worries..... just happend to get wrong "color" here..

 

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canopy work , glued the two parts together , his time used from an 0.5 litre icetea plastic bottle .

 

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airbrush painted inside with thinned out paint, to get it transculent. It dont seems like it on picture, but is. (look eg in front, then you see the the "beam" through it. Enough transculent that eg reciver LED control lamps shows through.

Here i "walk away" from the scetch... it had a black canopy. My choice is paint this plane black and gold. (to empty some rattlecans) , then a bluish canopy fits better.

 

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main fuselage is ready with tailfin.

(dont know why now, but .png files loose some of the black in pictures.. not happend before...)

 

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Wingtips are curved up, done by scorecuts and a bbq scewer drawed gently trough, and the area glued with 5min epoxy when shaping curb. . (also a layer from upperwing area onto the curb on outside. I used a foamboard piece to spread the glue, and reshape if needed before drying.
Scorecuts glued is marked on photo.
( this time i reworked a wing from another wrecked plane, who is reason for some old paint)

after dryed, some light wall filler used to shape uneveness, and get it looking nice.

 

[GrizWiz]

Wingtips are curved up, done by scorecuts and a bbq scewer drawed gently trough, and the area glued with 5min epoxy. (also a layer from upperwing area onto the curb on outside. I used a foamboard piece to spread the glue, and reshape if needed before drying.
Scorecuts glued is marked on photo.
( this time i reworked a wing from another wrecked plane, who is reason for some old paint)

View attachment 191219


after dryed, some light wall filler used to shape uneveness, and get it looking nice. View attachment 191220

Nice!

 

[leaded50]

if been a bigger plane/ bigger wingtips, i would also reinforced the curbed tips with eg. pushrod wire bendt to fit curb glued in place and into the wing it self.(as did on the HX1 jet, who have double as high tips) . Here the tips aint so big, and the epoxyglue /stiffness of it, should be enough.

 

[leaded50]

This plane was made because a friend asked for make a 3D acrobatic/sportsplane/speed runner.
Now its ready for flying.... (i believe)
Im showing here two versions, one without the extra fairings in front, and the one who orginally was intended with it. If make without (plans will be revealed) you need make a hatch cover in frontpart too. The front fairing do reinforce though, and helps for a touch more lift. Air will go through inside easy, and will not brake any speed.

 

[leaded50]

without front fairing.. :