The design report

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The nose section of the fuselage consists of a smaller nose rib connecting to a fuselage basic rib with two longerons, a 4mm paulownia top plate and two centre plates. The centre plate runs throughout the fuselage, only stopping at the centre of the back tapered tail section of the fuselage. This is to ensure that there will be no geometrical twist in the fuselage body when assembling the whole fuselage. The connection of the nose rib to the fuselage body was simple. It was then found out that the thrust the motor was producing and the torsion it produces was a little too risky for the connection to be left alone. This is because other than glue, there was nothing there to stop the nose rib from popping out from the connections. The team then decided to drill two tiny holes near the edge of the nose rib and tied wires around it to the other rib of the fuselage. This will then stop the nose rib from moving together with the motor and away from the fuselage. Figure 4.1.203: The fuselage body Figure 4.1.204: Top view The third rib of the fuselage is connected to the nose landing gear. Its job is solely to take the load from the landing gear during the landing of the aircraft. This is also as forward as the battery could move in the fuselage. The fourth rib is there just to add structural strength to the fuselage. As you can see from figure 4.1.203, there are 6
longerons running throughout the fuselage. Like the centre plate, the longerons too stop at the last third rib. Since the dimensions of the material given were limited, we had to make the centre plate and the longerons into two parts to obtain the length that we needed. The connections of the centre plate could be clearly seen in figure4.1.204. Other than the longerons and the centre plate, we have a bottom plate sliding through the whole constant part of the fuselage body. This plate is for the battery to slide on to adjust the position of the desired cg. This plate can also act as a strengthening plate for the whole fuselage system. The orange block in fugure() is nothing but the battery. Figure 4.1.205: The top plate Figure 4.1.206: The side view of the part Figure 4.1.207: The rib connecting to the top plate
Page 1 and 2: EP-UAV Project 2009 iSpy Kate Rietd
Page 3 and 4: Preliminary and Detailed Design 4 S
Page 5 and 6: Executive Summary 1 iSpy is a twin
Page 7 and 8: Design Requirements and Objectives
Page 9 and 10: Initial Sizing 3.1.2 Estimating air
Page 11 and 12: Airfoil design 3.1.4 Wing: Before t
Page 13 and 14: Tail: A symmetric airfoil with a th
Page 15: Empennage design 3.1.6 The dimensio
Page 19 and 20: Pod Layout 3.1.9 The pod of the air
Page 21: Weight estimation and Centre of Gra
Page 26 and 27: Figure 3.2.303 - Stability axis der
Page 30 and 31: CAD definition of the concept 3.2.5
Page 32 and 33: Figure 3.2.505: The vertical tail F
Page 34 and 35: Preliminary and Detailed Design 4 S
Page 36 and 37: Figure 4.1.109 Figure 4.1.110 The c
Page 38 and 39: Material type was chosen for each c
Page 42 and 43: This part of the fuselage is the mo
Page 44 and 45: Empennage structure 4.1.3 Prelimina
Page 46 and 47: An ‘L’ shaped support was also
Page 48 and 49: Landing gear 4.1.5 Initial stages o
Page 50 and 51: Pod Structure 4.1.7 Figure 4.1.701-
Page 52 and 53: Fuselage fabrication 5.2 Since ther
Page 54 and 55: The servo holder plates in front of
Page 56 and 57: Landing gear fabrication 5.5 The de
Page 58 and 59: Fabrication of Pod 5.6 Like the fus
Page 60 and 61: Control surface fabrication 5.9 Ail
Page 62 and 63: Note: The weights taken after fabri
Page 64 and 65: It was here that the first problem
Page 66 and 67: Flight Test 6.2 The flight test aim
Page 68 and 69: Appendix 7 Appendix A - AVL files i
Page 70 and 71: TRANSLATE -0.450 0.384 0.00 # BFIL
Page 72 and 73: CLARK YM-15 - Re = 250000 Alfa Cl C
Page 74 and 75: Appendix C - Preparation of materia
Page 76 and 77: Appendix D - Control surface sizing
Page 82 and 83: Conceptual Design Preliminary Desig

The design report

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