AP Goshawk 50mm EDF

[AircPirateNinsei]

STATUS: Published!
For the pusher configuration (FT Power Pack F) click here!

GENERAL SPECIFICATIONS
WINGSPAN: 660 mm | 25.98 in
CG: 28 mm | 1.10 in
DRY WEIGHT: 369 g | 13.02 oz
ALL UP WEIGHT: 540 g | 19.05 oz (with 1600 mAh 4s)
CHANNELS: 4 (THR | AIL | ELV | RUD)

RECOMMENDED SETUP
EDF: 2627 KV4500 (4s | 50 mm | 11 BLADES)
ESC: 40 A
SERVOS: 3 x 5 g (AIL | RUD) | 1 x 9g (ELV)
BATTERY: 1600 mAh 4s

DOWNLOAD:
FREE BUILD PLAN

VIDEOS:

PICTURES:

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Old first post:
I bought a HK 50mm Alloy EDF 4800kv (3s Version) and found the T-45 Goshawk in search for a suitable aircraft, which is easy to convert into foamboard. It will be my very first EDF plane and here is my first design:

The wingspan is 610mm. The fuselage is not yet glued, first only stapled. The build plan is in raw format and the parts fit quite well. There is still a lot to do before it can take off to the maiden flight, so back to work!

 

[earthsciteach]

That looks fantastic! Would you consider posting plans?

 

[AircPirateNinsei]

Thank you! Sure, for free, if i finished the plans and the maiden flight was successful.

 

[earthsciteach]

I have a pair of 50 mm edf motors, a 55 mm unit and a 70 mm unit with no homes at the moment.

 

[JimCR120]

Got video?

 

[AircPirateNinsei]

I have a pair of 50 mm edf motors, a 55 mm unit and a 70 mm unit with no homes at the moment.

One of the 50 mm edf´s would have found a home, if the maiden flight is successful. For the others, let's see what the future brings.

Got video?

I will do a video of the maiden flight. Until then there is still a lot to do.

 

[SheppO]

Always loved the lines of the Hawk - great job. Im thinking about a BAE Hawk in Red Arrows livery...

 

[CrossedUpChris]

It looks great. What is the length/wingspan. I'd love to make a new edf, there's only so many viggen one man can make!

 

[jpot1]

This looks great! Would this work as a pusher?

 

[jpot1]

Progress?

 

[Scottie]

Now that is very nice,clean and simple
GL with the maiden

cheers

 

[AircPirateNinsei]

Thank you all!

Yes it will be a simple build without posterboard. I plan to create two types of wings - the one shown in the picture with wingtips and a curved alternative like the original Goshawk has.

The actual length is 720 mm (approximately 28.35 in) and the wingspan is 610 mm (approximately 24.02 in).

A pusher version would be a great alternative too. Perhaps later.

Now i have to install the electronics and find the perfect places for the stab-servos.

 

[jpot1]

Found a similar set of plans on rcgroups, printed at 120%. Will run it as a pusher with a 2826/6 on a 6x4 with a 3s 2200.

 

[AircPirateNinsei]

Looks well done! :applause:

Does it have an elevator or do you use elevons?

 

[jpot1]

Elevator and ailerons. Better pics below.

 

[AircPirateNinsei]

Elevator and ailerons. Better pics below.

A clean and simple beauty!

Mine is ready for the maiden flight:

I have not installed a servo for the splitted horizontal stabilizer, because i don´t want it in the EDF air duct.
In an EDF is not as much space, as in a pusher.

So I configured it as elevon. Let's see if the CG is correct.
Sure it will fly, but how many ... seconds?

 

[jpot1]

Good luck! I found mine liked speed. If I slowed down too much it dropped like a brick.

Will it fly without an elevator?

 

[AircPirateNinsei]

... Will it fly without an elevator?

As I've read on rcgroups, an elevon configuration is not a good choice for an aircraft that has a horizontal stabilizer, because the elevator is too close to the center of gravity. As EDF the Goshawk needs two servos for the divided elevator. Right and left of the air duct was just enough space for the HXT500 and there I installed these servos.



Now this Goshawk has a real elevator ... and more weight! The AUW with a 3S 1000mAh is 410 g (14.46 oz).
According to the Datasheet, the maximum thrust of this EDF is 450 g (15.87 oz).

Let's see if it is also a brick!

 

[CrossedUpChris]

Good luck. It certainly looks the part!

 

[AircPirateNinsei]

Another brick in the air - only for a few seconds!
The EDF unit with a supposed max. thrust of 450 g (15.87 oz) has not enough thrust, so the maiden flight was not successful.

Next i will try the 4S powered Dr. Mad Thrust 50mm 10 Blade Alloy EDF 3300kv with a max thrust of 650g (22.93 oz). It´s ordered!

If this one also has not enough thrust, i have to order a FMS 50mm EDF!