Vendetta Final Proposal Part 2 - Cal Poly

0.35 or 390 ft/s by finding the minimum total drag on the aircraft at sea-level and loiter weight. The resulting mission is
listed in Table 11.I including the fuel consumption by mission segment and the corresponding RFP mission segments.
By completing the design mission, the requirements for a supercruise Mach number of 1.6 and mission radius of
1,750 nm are met. To determine the fuel capacity required to perform the design mission, the mission was simulated by
numerically integrating the fuel burn rates over the mission profile. The mission simulation was also used to optimize
certain aspects of the mission such as cruise altitudes. Table 11.II lists the results of the mission simulation and Figure
11.9 shows a breakdown of fuel consumption by mission segment
Table 11.I - Design Mission
Detailed Mission Segment
Fuel
RFP Mission
Segment
Warm-up 2 min at idle thrust 89 lb 1a 89 lb
Takeoff – Accelerate to takeoff speed 270 ft/s
170 lb
Accelerate to Mach 0.80 at maximum military thrust
609 lb
1b 779 lb
Climb to 17,500 ft and accelerate to Mach 0.88
807 lb
Climb to 32,000 ft and accelerate to Mach 1.59
3,715 lb
Climb to 37,500 ft and accelerate to Mach 1.66
626 lb 2 6,128 lb
Climb to 47,000 ft at Mach 1.66
948 lb
Climb to 49,000 ft and decelerate to Mach 1.6
32 lb
Cruise 1,000 nm at 49,000 ft and Mach 1.6 16,139 lb 3 16,139 lb
Climb to 52,000 ft at Mach 1.6 774 lb 4 774 lb
Dash 750 nm at 52,000 ft at Mach 1.6 10,613 lb 5 10,613 lb
Descend to 50,000 ft at Mach 1.6
39 lb
Turn 180º at n = 1.25
867 lb
Drop 4 × 2,000 lb JDAMs
0 lb
6 1,425 lb
Climb to 55,000 ft at Mach 1.6
519 lb
Dash 750 nm at 55,000 ft and Mach 1.6 8,814 lb 7 8,814 lb
Climb to 58,000 ft at Mach 1.6
401 lb
Cruise 1,000 nm at 58,000 ft and Mach 1.6
10,268 lb
9 10,669 lb
Descend to Sea-Level and decelerate to loiter speed 391 ft/s 885 lb 10 0 lb *
Loiter 30 min at Sea-level and 390 ft/s 2,453 lb 11 2,453 lb
Decelerate to landing speed 270 ft/s 174 lb – –
Land – Decelerate to zero speed 27 lb – –
Unload non-fixed equipment (2 × AMRAAMs and crew 1,280lb) 0 lb – –
* The RFP specifies no fuel used in descent 58,968 lb 57,882 lb
Table 11.II - Mission Results
Total fuel consumption
58,968 lb
Mission radius
1,750 nm
Total distance traveled over mission 4,100 nm
Total mission duration
5 hr. 6 min.
Takeoff weight
125,051 lb
Empty weight
56,797 lb
Fuel weight (total fuel onboard) 58,974 lb
Maneuver weight
95,624 lb
Landing weight
58,077 lb
Average cruise lift to drag ratio 6.55
Cruise Back
17%
Reserve
4%
Dash Back
15%
Misc.
7%
Dash Out
18%
Accelerate
& Climb
11%
Cruise Out
28%
Figure 11.9 - Fuel Consumption over Mission
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