# A Survey of the Effects of Vehicle Configuration on Urban Air Mobility +
## 3 Applications in UAM
Due to this fact, we can consider almost any configuration for cargo delivery. By indicating on this fact that tilt-body configuration seems to be more suitable for this application rather than transportation unless we can guarantee a comfortable flight experience for passengers  
It should be considered that configurations like gyrodyne, Magnus-effect, and morphing wing despite the companies' neglect have good potential for this application. Aerial surveillance usually requires a hover flight and long endurance at low heights. According to this, configurations like lighter-than-air, dual system, multirotor, and tilt-rotor are suitable options according to the previous section. As mentioned before, the tourists' comfort and safety are two critical requirements in entertainment flights. It is usually necessary to provide a good view for passengers. This is why lighter-than-air and gyroplanes are the most popular configurations for entertainment. Table 16 summarizes the requirements of the different applications in UAM based on what is studied in this section and the suitable configurations based on what was studied before 44 in the previous section. The configurations which are not being studied, or worked on, by different companies and are also ignored in Section 2.4 in our study due to the lack of enough information are mentioned as considerable configurations in Table 16.  
Some researchers like [PERSON] et al. have shown that a wide range of configurations are used for PAV so far. This includes fixed-wing, multi-rotor, flying car, helicopter, gyroplane, and hybrid ones [5]. Figure 24 illustrates the histogram of PAV development derived by them. However, due to the specific requirements of this application, the suitable configurations are in fact more limited. In this application, the range and endurance are comparatively short, while the safety and comfort of passengers are highly required. These all make multi-rotor and hybrid aircraft suitable candidates. Figure 24 confirms this claim, when we focus of the development of PAVs during time it can be clearly seen that newer aircraft are mostly VTOL and hybrid. The shift from HTOL configurations to VTOL and hybrid is mostly due to the requirements of this specific class. It is easier to provide a safe flight using these VTOL and hybrid aircraft compared to HTOL ones. In addition the current focus on the electric vehicles and clean energy encourages designers and manufacturers to invest on the VTOL and hybrid configurations. One of the notable novelties in newer configurations is the combination of Distributed Electric Propulsion (DEP) with common configurations like fixed-wing, tilt-wing, and tilt-rotor. Instead of using one or two large propulsion units, a DEP system utilizes multiple small propulsion units. Additionally, this system can be combined with other lift-producing systems, like wings, to create a more efficient aircraft. Another advantage of the DEP is that it can spread disc loading along the wing or body, resulting in more efficient disc-loading areas and increased flight efficiency [100; 101]. Furthermore, in terms of safety, if one of the propulsion units fails, the aircraft can still use the other propulsion units to compensate for the failed unit. A fault-tolerant controller can stabilize the aircraft in fail conditions and prevent a crash [88; 101].