ASSIGNMENT 6 Textbook Assignment:    "Aircraft Power Plants," chapter 6, pages 6-1 through 6-20. 6-1. In 250 B.C., the first reaction engine was built by what group of people? 1. Romans 2. Egyptians 3. Greeks 4. Babylonians 6-2. Naval  aircraft  jet  propulsion  engines  may  be identified by what total number of categories? 1. One 2. Two 3. Three 4. Four 6-3. The gas turbine engine powers almost all Navy aircraft. 1. True 2. False 6-4. Rocket  engines  carry  their  own  oxidizer  for combustion for what primary reason? 1. For travel above the atmosphere 2. For travel within the atmosphere 3. To take the place of hydrogen 4. To take the place of carbon 6-5. Jet  propulsion  engine  operations  can  be  ex- plained   by   which   of   the   following   laws   of motion? 1. Newton's first 2. Newton's second 3. Newton's third 4. Newton's fourth 6-6. When  the  stem  of  an  inflated  balloon  is  re- leased, what action causes the balloon to move forward? 1. The force of the escaping air 2. The low-pressure area against the front of the balloon 3. The    pressure    from    inside    the    balloon pushing against the outside air 4. The pressure of the air on the inside of the balloon directly opposite the open stem 6-7. A  basic  gas  turbine  engine  consists  of  what total number of major sections? 1. Six 2. Five 3. Three 4. Four 6-8. Most   of   the   air   taken   into   the   combustion chamber   of   a   jet   engine   is   used   for   what purpose? 1. Compression 2. Propulsion 3. Combustion 4. Cooling 6-9. A compressor stage consists of what row(s) of blades or vanes? 1. Rotating blades only 2. Stator vanes only 3. Rotating blades and stator vanes 4. Three or more rows of rotating blades and stator vanes 6-10. In a compressor, the air pressure increases each time it passes through a set of rotors and stators for which of the following reasons? 1. The  areas  of  the  rotors  and  stators  gets larger 2. The  areas  of  the  rotors  and  stators  gets smaller 3. The spool area of the stators increases 4. The spool area of the rotors increases 6-11. Since the initial appearance of the split-spool compressor    engine,    the    potential    thrust    of today's engines has been boosted considerably. These compressors are driven individually by what means? 1. The turbine assembly 2. Separate wheels of the turbine assembly 3. The rotor assembly 4. The stator assembly 6-21