DBF Pulchowk

Bibek Yonzan
March 1, 2024

Timeline:~2 years, 2nd and 3rd year of uni

Technologies: CATIA, CNC foam cutter

DBF Pulchowk

For two years, 2nd and 3rd year of university, I was part of DBF Pulchowk, which participated as Team IOE in the annual AIAA Design, Build, Fly competitions. For 2023 and 2024, the team ranked 68 and 38 globally among 100+ competitors, respectively. Unfortunately, the could never gather sufficient funds to attend the annual flyoff held in USA. For 2023, the team designed Ares, an electronic warfare fixed wing UAV. For the 2024 edition, the team designed, Junkiri, a medical fixed wing UAV.

Ares

Helped with manufacturing.
Helped with technical documentation.

Aircraft Parameters
	Wing	HT	VT
Airfoil	SD7062	NACA0012	NACA0012
MAC [in]	11.02	7.87	6.69
Span [in]	62.59	22.83	10.23
Area [in²]	694.40	179.80	68.51
AR	5.71	2.32	6.12
Taper Ratio	1	1	1
Sweep Angle [°]	0	0	0
Incidence Angle [°]	2	0	0

Avionics and Propulsion
Battery	Transmitter	Receiver	Propeller	Motor	ESC
651P4S00mAh SOC	Spektrum DXSe	Spektrum AR801DZT	15 x 5.5	SunnySky X Series V3 X3520 560 KV	100A v3 ESC SA UBEC

Junkiri

Helped with manufacturing and procurement.
Helped with the design and FEA of motor mount.
Helped with documentation and score sensitivity analysis.

Aircraft Parameters
	Wing	HT	VT
Airfoil	SD 7062	NACA 0012	NACA 0012
Span [ft]	4.92	1.64	0.82
MAC [ft]	0.98	0.54	0.54
Planform Area [ft²]	4.82	0.86	0.43
AR	5.02	3.09	1.54
Dihedral (°)	0	0	0
Taper Ratio	1	1	1
Incidence Angle (°)	2.5	0	0

Fuselage
Length (in)	Nose (in)	Height (in)	Width (in)	Model
24.7	9.85	7.3	5.78	Junkiri

Avionics and Propulsion
Receiver	Transmitter	ESC	Motor	Propeller
Spektrum AR80102T	Spektrum DX8e	60A v3 ESC 5A UBEC x 2	Emax MT3515 x 2	13*5