SAWE Report - Cal Poly San Luis Obispo

11 Performance
11.1 Performance Requirements
The performance requirements listed in the RFP, shown in Table 11.I, consist of specific excess
power requirements, a turn rate requirement, mission requirements, and takeoff and landing
requirements. The specific excess power and turn rate requirements are measured at maneuver
weight, which is defined as 50% internal fuel, and a payload of 2 × AIM-120 AMRAAM’s and 4
× 2,000 lb (907 kg) JDAM’s. The mission requirements are defined as the ability to perform the
design mission listed in Table 11.II.
Table 11.I - RFP Performance Requirements
Supercruise Mission Radius
1,750 nm (3,240 nm)
Supercruise Mach Number 1.6
1g Military Specific Excess Power at 50,000 ft & Mach 1.6 0 ft/s (0 m/s)
1g Maximum Specific Excess Power at 50,000 ft & Mach 1.6 200 ft/s (61.0 m/s)
2g Maximum Specific Excess Power at 50,000 ft & Mach 1.6 0 ft/s (0 m/s)
Maximum Instantaneous Turn Rate at 15,000 ft & Mach 0.9 8.0 deg/s
Takeoff Field Length 8,000 ft (2,438 m)
Landing Field Length (Icy) 8,000 ft (2,438 m)
Table 11.II - RFP Design Mission
1. Takeoff and acceleration allowance
a. Fuel allowance for warm-up
b. Fuel to accelerate to climb speed at maximum thrust (no distance credit)
2. Climb from sea-level to optimum supercruise altitude
3. Supercruise 1,000 nm (1,852 km) at Mach 1.6 and optimum altitude
4. Climb above 50,000 ft (15,240 m)
5. Dash 750 nm (1,389 km) at Mach 1.6 above 50,000 ft (15,240 m)
6. Weapons delivery
a. 180º turn at 50,000 ft (15,240 m) and Mach 1.6
b. Drop air-to-surface weapons
7. Dash 750 nm (1,389 km) at Mach 1.6 above 50,000 ft (15,240 m)
8. Supercruise 1,000 nm (1,852 km) at Mach 1.6 and optimum altitude
9. Descend to sea-level (no distance credit or fuel used)
10. Reserve for 30 min at sea-level and speed for maximum endurance
The RFP design mission explicitly defines some aspects of the required mission, while other
aspects of the mission such as cruise altitudes and loiter speed are arbitrary. Within the
constraints of the design mission, a detailed mission was created and optimized to minimize fuel
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