### Question 33242

Verified

Aircraft Propulsion

3. Explain on the effects of the following aerodynamic/wing characteristics. You can simply summarize what is written in the textbook.

(c) Wing sweep

(b) Aspect ratio

(a) Airfoil thickness ratio

(d) Wetted aspect ratio

### Question 33241

Verified

Aircraft Propulsion

2. Briefly explain the following concepts

(a) Wetted aspect ratio

(b) Rubber-engine sizing

(c) Mission profile

(d) Thrust matching

### Question 33240

Verified

Aircraft Propulsion

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?