Supersonic speed exceeds Mach 1, approximately 343.2 m/s in dry air. Hypersonic speeds are above Mach 5. Transonic flight occurs between Mach 0.8 and 1.2
Flight occurs through space without contacting planetary surfaces. Achieved through aerodynamic lift, buoyancy, or ballistic movement. Natural flight includes birds, bats, insects, and gliders. Human inventions include aircraft, rockets, and balloons
Boeing 747 was designed for Pan Am's 30% lower cost passenger travel. First flight occurred on February 9, 1969, entering service on January 22, 1970. Aircraft features 37.5° wing sweep for Mach 0.85 cruise speed. Designed with raised cockpit for cargo loading capability
Air superiority is crucial for winning land wars in HOI4. 1940 improved airframes offer better stats at slightly higher cost. Basic 1936 airframes are only recommended for early war missions
X-Plane is world's most comprehensive flight simulator for personal computers. Includes over 15 aircraft models and 2,000 additional downloadable aircraft. Covers Earth from 74 north to 60 south latitude with 35,000+ airports. Features detailed failure modeling for aircraft systems. Supports subsonic and supersonic flight dynamics
Boeing windows have wide, angular side angles, while Airbus windows have sharp right angles. Boeing noses are sharp and pointy, while Airbus noses are round and semi-circular. Boeing engines have flat bottoms and circular tops, while Airbus engines are circular. Boeing engines are mounted forward, while Airbus engines are under wing