Avro Arrow C-105

Started by GuyOReilly, June 08, 2022, 09:06:30 PM

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GuyOReilly

The start of something new and interesting.   ;D
Kit is Models By John that was given to me by the estate of my friend John Riley (a different John than the kit manufacturer).
It will be powered by a single ducted fan, 80 AMPS ESC and 5-6 cells.  I am told it is more than ample power for the model.
Step one: Open the box and look at the goodies inside, see pictures.
Step 2: trial fit a few pieces, see pictures.
Step 3: read the instruction manual for the 5th time.
Step 4: I did not get that far yet, I need to buy more glue.  :(

#72 - The Box
#73 - The some of the Box contents
#74 - More things in the Box
#75 - Trial fitting the tail end and bottom pieces on the sides
#76 - View of the tunnel
#77 - View of the bottom, from the front

GuyOReilly

Glue secured!
Construction will start soon.   ;D

GuyOReilly

More progress, it now looks like an Avro Arrow (50/50 rule @Frank v B ) ;)
Construction is blue foam, some needing shaping, such as the nose cone: take a triangular block and make a round (roundish) cone with it.
Power will be using this 10 blade fan with an 80 amp ESC and 5 or 6 cells LiPos.
Model is light; slightly less than 14 ounces at this stage.
Next is more shaping and sanding, and adding carbon fibre reinforcements in strategic places.

Photo # 90 - Model is large, larger than I first thought.  Storage might be a problem.
Photo # 91 - The power unit front view.
Photo # 91 - The power unit from the back.

Frank v B

Guy,

More than beats the 50/50* rule.

As Glenn will tell you, the CG on the Avro Arrow is at the shark's tooth on the leading edge.

Keep going!

Frank

* if you can't see a detail at 50' and 50 miles per hour don't waste your time on it. 8)
"Never trade luck for skill"

GuyOReilly


Frank v B

Guy,

re: "Plenty of power!!"

30 seconds at full power and your shop is dust-free. 8)
So you clamped down the motor....but did you tie down the Workmate??

Frank
"Never trade luck for skill"

GuyOReilly

I did not like the droopy nose.
The before and after rhinoplastic surgery.

03 - Before.
05 - After rhinoplastic surgery.

GuyOReilly

EDF and thrust tubes epoxied in place.
Yes @Andy Hoffer the clamp will be removed prior to the Maiden Flight.

GuyOReilly

Started the fibreglassing.
Easy and light process.

GuyOReilly

Testing control surfaces and motor.
All good in the correct direction.
Plenty of power.

https://www.youtube.com/watch?v=DZGUCME43TQ


GuyOReilly

Plane was ready for a maiden flight. 
Hand launch on 4cells not adequate.
A dolly will be constructed along with a bungie cord and towline contraption.
Also, will probably gonto 6 cells.
Thank you @Frank v B for holding back on going full power when I was looking for fudder.
You are not fired, just yet...

GuyOReilly

Whilst charging the batteries this morning, I noticed that the one used was a 3-cell.
Definitely not enough power.
This may be why we did not achieve flying speed.

Wingnutz

Using a 4S battery should give you a noticeable increase in thrust. Good luck!
DOWN WITH GRAVITY! UP WITH LEVITY!

Frank v B

Guy,

re: "I noticed that the one used was a 3-cell".

Phew!  That's like asking me to test drive a car you have built with one wheel missing.  I prefer 4 wheelers. ;)
Great video by Colin via his drone.
re: the test flight.  Some people dowse for water.  Your plane successfully dowsed for broken chairs.

Frank
"Never trade luck for skill"

GuyOReilly

Dolly made, ready to test as soon as bungie cord located.