Learn how to describe an aircraft using the WETFUS (wings, engines, tail, fuselage, undercarriage, special features) designed for the use of Australian Air Force Cadets. Too long however provides a comprehensive overview to assemble your own presentation

2. WEFTUS NO - THIS IS A WETDOG

3. WEFTUS NO THIS IS A WETCAT (AND ANGRY TOO)

4. Few hints here see if you can identify WETFUS

5. WEFTUS is an acronym for recognisable features of an aircraft
Wings
Engines (Nacelle)
Tail (Empennage)
Fuselage
Undercarriage
Special features

6. WINGS - location

7. WINGS - shape

8. WINGS - Bracing

9. WINGS – X Plane
Grumman X29

10. WINGS – Crescent
Hanley Page Victor long range heavy bomber

11. WINGS – Stealth Bomber

12. WINGS – Have other uses

13. WINGS – When Anhedral becomes dihedral
Boeing B52 Stratofortress

14. ENGINES
There are 4 types of engine used in aircraft
• Piston – fuel petrol (higher octane than cars use)
• Gas turbine - fuel AVTUR (keroscene)
• Rocket
• None – gliders
Number and location of engines

15. Piston engines Radial Engines
Radial engines early models the crankshaft was stationary and the cylinders rotated
Later engines the cylinders were stationary and the crankshaft rotated
R 2800 is known as the Prat & Witney Twin Row Wasp it ahs 18 cylinders (45.96 L) producing
2,800 hp (2,100 kW), Diameter: 52.8 in (1,342 mm) for Aircraft such as the DC6 and the Super
Constellation

16. Piston engines V Engines most famous Rolls Royce Merlin
The engine that helped win WWII Length: 88.7 in (225 cm producing 1,290 hp (962 kW)

17. Piston engines Horizontally opposed
Lycoming & Continental are the major manufacturers

18. Piston engines Horizontally opposed in aircraft

19. Gas Turbine engines Commonly Jet engines
• Ram Jet
• Pulse
• Radial Flow
• Axial Flow
• Turbo Fan
• Turboprop

20. Ram Jet Engine

21. Pulse Jet Engine

22. Pulse Jet Engines are dangerous and
are banned in Australia

23. Radial Flow Gas Turbine Engine
HdH Goblin engine in Vampire big brother the Ghost used in Comet

24. Axial Flow Gas Turbine Engine

25. Turbo Fan Engine

26. Turbo Fan Engine Gas flow diagram

27. Turbofan from an Airbus A380

28. Turboprop

29. Allison 250 Gas Turbine the compressor on the
left is about the size of a large tin of coffee

30. Rocket Engines

31. Engine Numbers and location
Single engine
Most single engine aircraft have the engine in the fuselage

32. Engine Numbers and location
Single engine
There are of course exceptions as in the SeaMax

33. Engine Numbers and location
Multiple engine
Beech StarshipPiper PA-31 Navajo

34. Engine Numbers and location
Multiple engine
Adam Aircraft's A500 piston push/pull twin
featuring TIO-540 engines. The company also
developed the A700 turbojet before financial
troubles doomed the company in 2009.

35. Engine Numbers and location
Multiple engine
Brittan Norman Islander
727
Mc Donnel Douglas DC 10

36. Engine Numbers and location
Multiple engine
Fairchild Republic A-10 Thunderbolt II AKA Warthog Gulfstream 450

37. Engine Numbers and location
Multiple engine
NOT REALLY

38. Engine Numbers and location
Multiple engine
Notice the bend in the wings

39. Engine Numbers and location
Multiple engine
Airbus 380 B52

40. Engine Numbers and location
Multiple engine

41. TAIL Empennage
The Tail Contains the
• Horizontal stabiliser
• Vertical stabiliser
• Elevators
• Rudder (another nautical term)

42. TAIL (Empennage) configurations

43. There are of course variations
Aussi built Transavia Airtruk Raptor
Phantom MD 500n

44. FUSELAGE

45. Fuselage Nomad
Australian built CAC Nomad

46. UNDERCARRIAGE
• Fixed – trycicle tail dragger
• Retractable
• Marine
• Special Purpose

47. Fixed Undercarriage
Jabiru J120 Aussi Built

48. Retractable Undercarriage

49. Marine Undercarriage

50. Fixed Undercarriage Helicopter

51. Special Purpose Undercarriage

52. SPECIAL FEATURES

53. SPECIAL FEATURES
Orion

54. SPECIAL FEATURES

55. SPECIAL FEATURES
Cessna 310 Whitcomb winglets