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Table 1 Identified the decision variables based on the FCO dimensions

From: Fuel consumption optimization in air transport: a review, classification, critique, simple meta-analysis, and future research implications

Identified dimension Identified decision variables of FCO References
(A) Aircraft technology & design 1)Aircraft structural weight
2)Wing reference area
3)Wing leading edge sweep
4)Wing quarter chord sweep
5)Wing aspect ratio
6)Wing mid span
7)Wing dihedral
8)Wing root thickness to chord ratio
9)Wing tip height
10)Wing span
11)Wing fuel weight
12)Wing exposed root chord
13)Wing quarter chord sweep
14)Wing average thickness to chord ratio
15)Ultimate load factor
16)Maximum design speed
17)Fuselage seat abreast
18)Fuselage cargo height
19)Maximum height of fuselage
20)Effective maximum diameter of fuselage
21)Maximum cabin width of fuselage
22)Fuselage nose length
23)Fuselage parallel length
24)fuselage tail length
25)Fuselage cabin length
26)Fuselage fineness ratio
27)Horizontal tail area
28)Horizontal tail span
29)Horizontal tail aspect ratio
30)Horizontal tail taper ratio
31)Vertical tail area
32)Vertical tail span
33)Vertical tail aspect ratio
34)Vertical tail taper ratio
35)Drag type factor
36)Critical mach number
37)Aircraft wetted area to wing reference area ratio
38)Cruise lift to drag ratio
39)Oswald efficiency factor
40)Effective wing aspect ratio
41)Takeoff thrust sea level
42)Engine bypass ratio
43)Number of engines
44)Engine dry weight
45)Operating specific fuel consumption
46)Static margin
47)Centre of gravity position of aircraft from leading edge of wing
48)Aerodynamic centre of aircraft from leading edge of wing
[1, 3, 10, 11, 13107]
(B) Aviation operations & infrastructure 49)Maximum takeoff weight
50)Stage length
51)Fuel weight
52)Reserve fuel weight
53)Payload
54)Cruise speed
55)Maximum number of passenger
56)Mission passenger
57)Maximum cabin altitude differential
58)Maximum payload weight
59)Mission payload weight
60)Takeoff field length
61)Maximum ceiling
62)Initial cruise altitude
63)Landing field length
64)Weather condition
65)Flight profile
66)Pilot Techniques
67)Aircraft maintenance
68)Terminal area
69)Runway
70)Taxiway
71)Apron
[1, 3, 7, 1120, 32, 33, 38, 4042, 44, 48, 53, 54, 61, 67, 69, 70, 7275, 85, 86, 94, 95, 98, 104182]
(C) Socioeconomic & policy measures 72)Aircraft scheduling
73)Fuel prices
74)Ticket prices
75)Economic incentives
76)Labour & Work Rule
77)Voluntary Measures
78)Community Awareness
79)Social and political pressure
80)R & D funding for technology
81)Government regulations
82)Charges and taxes
83)Emission trading scheme
84)Political obstacles
[2, 3, 1420, 29, 33, 41, 42, 44, 53, 54, 73, 74, 94, 113, 114, 150, 154, 158160, 172, 183224]
(D) Alternative fuels & fuel properties 85)Types of alternate fuels
86)Fuel availability
87)Energy per unit volume
88)Energy per unit mass
89)Aromatics content
90)Sulphur content
91)Additives
92)Boiling point
93)Flash point
94)Density
95)Viscosity
96)Lubricity
97)Freezing point
98)Smoke point
[3, 11, 1318, 32, 33, 4042, 53, 54, 59, 79, 86, 94, 104, 140, 150, 194, 225282]