Worlds first 1/24 full RC Airfix Mosquito
I made this!
Bit of vid from a live stream i did yesterday. First chance i've had to get back in the shed after 9 months of hell with the Mrs undergoing chemo and an operation for bowel cancer, now that the Mrs is on the mend thanks to some quite amazing keyhole surgery to remove 8cm of cancerous bowel, i have some time to finish this beast of a mozzy. Plus the mrs got pissed off with me hanging around making sure her every need was catered for. "cup of tea?" "you made me one 5 minutes ago!" . Bite to eat?" "You really are taking the piss!" Anyway, skip to near the end of the vid to see the flaps, lights and motors working. For those of you that remember the 1/48 scale fail version, this one is twice as big with proper rc propellers.
(
Hummel Who died and made you....oh wait...., Thu 2 Jun 2022, 14:44,
Reply)
Good to see you back on the job!
I skipped through so will have missed most things you said, so pardon my ignorance if you have covered any of this...
Just to reiterate my main advice from last time, for what it's worth (I just build aircraft in KSP, I am not a real world rocket surgeon):
Ram every heavy thing as far forward as physically possible. Centre Of Mass must be ahead of the centre of lift/drag (but not so far forward that the plane tips forward on its landing gears). This is a really tricky plane design in that respect.
The engines are going to do more than the control surfaces in terms of roll and yaw control (with differential thrust/spin/whatever)... I think they will need to have a thrust to weight ratio greater than 1 for you to be able to 'fly' (or drag the plane shaped brick through the air). That means being able to launch from an upright position like a rocket, helicopter or drone. Runway landings are going to cost you propellers and wing tips.
Flight test using dental floss or kite thread attached to the C.O.M., the other end pinned to the ceiling. This ghetto wind tunnel will let you test the engines and the general balance of weight, and let you see if the control surfaces do anything before trying a costly test flight proper.
Questions:
Do the engines gimble? That is, do they move their direction of thrust up down left and right?
Are the control surface servos in situ or can they also be placed far forward and have threads linking to the flaps themselves?
Any scope for including a deployable parachute?
(
brb man-child cuck corporate supplicant fuck, Thu 2 Jun 2022, 17:52,
Reply)
Answers-
Gimbley motors- Nope, didnt even know such things existed! Should this attempt end up being another expensive brick (highly probable) I will have to invest some time in learning stuff.
Servo's - Aileron servos are mid wing screwed to plastic welded brackets inside the wing (1gram'ish weight) I could move them if the centre of ballance is off. Flaperon Servos are just behind the motors , well ahead of the wing leading edge (1.7g each)
Rudder and tail flaps servos are in line with the main wing flaperons, again 1.7 g each (no where else to put them so they are staying put.)
The reail weight are the batteries and motors, i would guess half a kilo all together. motors are forward of the wing edge and the batteries will be in line with the wing edge
Parachute- LOL, i'm going to do some fast taxiing first...if she gets even the slightest hint of air i'm going to very quickly land and get an experienced RC pilot to take her the rest of the way...its still a big IF though :)
(
Hummel Who died and made you....oh wait...., Thu 2 Jun 2022, 21:19,
Reply)
You could have a parachute failsafe, it could be sprung from a tiny catch that's held shut by electricity
and if/when when that cuts out the spring launches 10p worth of plastic bag and dental floss to save £££'s of precious aircraft.
BTW I was saying 'ouch' for each of those 1.7g. Then you said HALF A KILO, holy shit! I guess the mass of everything else is negligible in comparison.
(
brb man-child cuck corporate supplicant fuck, Thu 2 Jun 2022, 21:39,
Reply)
Flight test using dental floss or kite thread attached to the C.O.M., the other end pinned to the ceiling. This ghetto wind tunnel will let you test the engines and the general balance of weight, and let you see if the control surfaces do anything before trying a costly test flight proper.
VERY MUCH LIKE THIS IDEA^^^^^^
(
Hummel Who died and made you....oh wait...., Thu 2 Jun 2022, 21:27,
Reply)
You could still crash into the ceiling so be careful!
And also, you know, hideously garotte yourself. Make sure the H&S executive has compiled a full risk assessment.
(
brb man-child cuck corporate supplicant fuck, Thu 2 Jun 2022, 21:46,
Reply)
Glad to see you're back
And glad Mrs Hummel gave cancer the kick in the cunt it deserves.
Hopefully this version of the model is a little more airworthy than the last heroic effort. It might be a little late for this, but did you consider doing any glide tests prior to fitting the control equipment? Would give you a good idea of the lift capacity of the model's wings and help you to get the CG in approximately the right location relative to centre of lift.
(
wheresthefish Partly filled with wrong, Thu 2 Jun 2022, 20:44,
Reply)