4. (30 points). A liquid is initially at 30 °C and 1 atm. It is heated to a

1. Consider the ASW design example in Chapter 3. (a) What would be the estimate of takeoff gross weight (using the method in Chapter 3) if the requirement of the cruise speed changes to: Mach 0.25, and Mach 0.85. Consider a turboprop engine for the first case. (b) What would be the estimate of takeoff gross weight (using the method in Chapter 3) if the requirement of the (one-way) cruise range speed changes to: 1000 miles and 2000miles. (c) What would be the estimate of takeoff gross weight (using the method in Chapter 3) if the requirement of the loitering period at the mission location changes to : 2 hrs and5 hrs. (d) The aspect ratio used in the textbook example was 7. What would be the takeoff gross weight, if this value changes to 5.5?

The jet engines of an aircraft produce amaximum thrust, Tmax that is proportional to density:9 Tmax= The wing surface area of the aircraft is 71 m².What zero lift coefficient of drag, CDO will the aircraft have if its absolute ceiling is atan altitude of 10 km and its maximum cruisespeed is 199 m s¹ at an altitude of 8 km?

A propeller-driven aircraft has a maximum endurance of 14.1 hours when flying according to cruise climb conditions. What is the range of the flight if the aircraft's speed is 68 m s™¹, the propeller efficiency is 0.85 and the specific fuel consumption is 10-7 kg W-¹ s-¹? The answer should have units of km.

3. (30 points). You go on vacation and return to find a wind tunnel in your lab is filled with a mystery gas that is either nitrogen (k = 1.400) or helium (k = 1.667). Your colleague has left you a post-it note saying that she determined the temperature to be 293 K, the Mach number to be 1.2, and the wind speed to be 1208 m/s. (a) Which gas fills the wind tunnel? (b) What would the wind speed be if the wind tunnel was filled with the other gas?

4. (30 points). A liquid is initially at 30 °C and 1 atm. It is heated to a temperature of 70 °C at a constant pressure. The change in density is -1.804 percent. (a) What is the liquid? (b) What is the change in density if this liquid is compressed to 75 atm at a constant temperature of 30 °C? (c) Is this liquid significantly compressible?

2. (30 points). A fighter jet is traveling with a velocity u = (398 m/s) i + (4.00 m/s) Ĵ+ (51.0 m/s) k relative to the earth. It fires a missile that moves at a velocity of v = (107 m/s) Î + (-10.0 m/s) ĵ + (2.00 m/s) k relative to the fighter jet. If the altitude of the fighter jet is 9000 m: (a) Find the Mach number of the missile an instance after it is fired. (b) Do we have to worry about compressibility effects when analyzing the missile's flight?

Show calculations 1. How to determine that Mbleed is 1. 2. Par Tur Tor Por T₁2, P₁2 3. meore 4. Mach number when bleed is fully closed Mach number when bleed is fully open 5. 6. How you determine the change of the bleed area? Note: number of items is given by the user (n). It can be changed and the program provide the manner to accept any n. y-i Tc = πy where ec is the polytropic efficiency and is around of 88% 92%