3. place where air is expanded and accelerated rearward by the turbine, creating energy needed for reaction of the aircraft

4. Combustion section

5. an illustration or piece of equipment showing parts normally not visible when the covering sections are removed

6. Cutaway

7. the place where air is compressed as it passes along the axis of the engine rotating assembly

8. axial flow compressor

9. the air surrounding all sides of an engine

10. ambient air

11. place where fuel and air are mixed and then burned

12. Combustion chamber

13. a passage which becomes continuously smaller in the direction of flow

14. convergent duct

15. the part of the engine where air enters

16. air inlet section

17. the place where air enters and is compressed and accelerated in a perpendicular direction to the axis of the engine

18. Centrifugal flow compressor

19. a part of the engine that takes in a large mass of air, compresses it, and delivers it to the combustion section

20. compressor section

21. a jet engine having in its forward end a continuous inlet of air that depends on the speed of flight for the compressing effect produced on the air rather than by the use of a compressor

22. ramjet engine

23. the points of reference used to determine location, position, or movement of parts of an engine

24. directional references

25. a duct of varying cross-section used in discharging liquids or gases in which the velocity of the fluid is increased

26. nozzle

27. the action of driving forward matterthe material a thing is made of

28. propulsion

29. a passage which becomes continuously larger in the direction of flow

30. Divergent duct

31. a part of the engine that collects and straightens the gas flow as it leaves the turbines, then accelerates the gases before they are discharged from the exhaust nozzle

32. exhaust section

33. a passage where the size of the duct remains the same

34. straight duct

35. a set of theoretical atmospheric conditions used as a reference in making technical order charts which are used for making engine adjustments and computing thrust

36. standard day

37. a propulsion system having a fan that is directly connected to and driven by a turbine and is used to supply air for cooling, ventilation, or combustion

38. turbofan engine

39. the forward force produced in reaction to escaping gases in jet propulsion

40. thrust

41. a propulsion system having a turbine-driven propeller designed to produce thrust principally by means of that propeller

42. turboprop engine

43. a propulsion system in which the power developed by a turbine is used to drive a compressor that supplies air to a burner and hot gases from the burner pass through the turbine and then to a rearward-directed thrust- producing exhaust nozzle

44. turbojet engine

45. the part of the engine that converts a portion of the heat energy of the exhaust gases into mechanical energy to drive the compressors and accessories

46. turbine section

47. changing to the position that streamlines the blades to the wind in case an engine must be shut off in flight

48. Feathering

49. a structure, piece, or body, shaped like a leaf in being wide and thin, designed to obtain a useful reaction upon itself in its motion through the air

50. airfoil

51. a device that converts fluid power into mechanical force or motion

52. actuator

53. a device used to ignite the pilot flame

54. flameholder

55. the component of a turbojet engine which transmits the power produced by the turbine wheels to the extension shaft assembly

56. Power section

57. a component that connects the power source to the reduction gear assembly

58. Extension shaft

59. to pull in

60. draw

61. the part of an engine that provides a means of attaching the propeller assembly to the propeller shaft while transmitting torque to the propeller blades

62. Barrel assembly

63. the part of an engine that provides additional thrust for short periods of time during takeoff and interception missions

64. Afterburner section

65. the first row of stationary blades in the axial flow compressor

66. Inlet guide vanes

67. a compressor with two spools

68. dual-spool

69. a part of a machine, shaped like a quarter of a circle

70. quadrant

71. the blades that are attached to the outer case of an axial flow compressor

72. Stator blades

73. an exhaust duct

74. tailpipe

75. a force that will produce rotation

76. torque

77. a drum

78. spool

79. the blades that are attached to the spool part of the compressor and increase the compression of the air at each stage and accelerate it rearward through several stages

80. Rotor blades

81. to the rear

82. rearward

83. the additional thrust provided by the afterburner section for short periods of time during takeoff and interception missions

84. Thrust augmentation

85. a compressor with one spool

86. single-spool

87. the component that allows the propeller shaft to be turned at a desirable speed and acts as an accessory mount

88. Reduction gear assembly

89. the thin, flat, or curved objects generally used for stationary airfoils within the engine

90. Vanes

91. to unite pieces of metal by heating until molten and fused until soft enough to hammer or press together

92. weld

93. a process by which air is removed from the system

94. bleed

95. a finned or vaned device for controlling the flow of air

96. louver

97. a chamber which consists of a housing and a liner; the liner consists of an undivided circular shroud extending all the way around the outside of the turbine shaft housing

98. Annular combustion chamber

99. a rotor; picks up and accelerates the air outwardly to the diffuser

100. impeller

101. branching outward in all directions from a common center

102. radial

103. a central line around which the parts of a thing, system, etc. are evenly spaced

104. axis

105. a stator; an annular chamber provided with a number of vanes forming a series of divergent passages into the manifold

106. diffuser

107. a chamber which consists of an outer case or housing, within which there is a perforated stainless steel combustion chamber liner or inner liner

108. Can combustion chamber

109. a small opening for the passage of fluid

110. port

111. a chamber which is a combination of the annular and can-type combustion chambers

112. can-annular combustion chamber

113. something that covers, screens, or guards

114. shroud

115. the technical name of an item

116. nomenclature

117. a formed edge, leg, lip, or rim; a narrow extension of a part that is formed at an angle to the main body of the part

118. flange

119. a detachable unit which consists of a fan inlet case and a low pressure compressor rotor and stator assembly

120. inlet fan module

121. accessory drive gear

122. ADG

123. compressor inlet variable vanes

124. CIVVs

125. a pipe fitting where fuel lines connect

126. fuel manifold

127. a divergent duct

128. diffuser case

129. a detachable unit which consists of the main gearbox assembly and the main oil pump assembly

130. gearbox module

131. a detachable unit with a specific function

132. module

133. a detachable unit which consists of a rear turbine case which contains a fan drive turbine rotor and stator assembly, a fan drive turbine shaft and a turbine exhaust case

134. fan drive turbine module

135. a cylindrical duct and liner combination extending from the aft end of a rear fan duct to the entrance of the nozzle

136. augmentor duct

137. a complete engine that consists of a high pressure compressor, a diffuser case with a combustion area, and a front turbine case with turbines

138. core engine

139. digital electronics engine control

140. DEEC

141. revolutions per minute

142. RPM

143. an element which consists of a shaft and a wheel; receives heated air from the stator element and takes this heat energy and converts it into mechanical energy to turn the high pressure turbine, which will turn the high pressure compressor

144. Rotor element

145. rear compressor variable vanes

146. RCVVs

147. the abbreviation for low rotor speed

148. N1

149. power takeoff

150. PTO

151. engine inlet total temperature

152. Tt2

153. an element which consists of an inner and outer shroud between which are fixed nozzle vanes; increases the velocity of heated air and directs the air onto the turbine rotors at the best angle

154. Stator element

155. the abbreviation for high rotor speed

156. N2