What are the Overall Effects of Subsonic Aircraft on UV - B? (ipcc.ch)
Landing / Take - Off (LTO) Cycle A reference cycle for the calculation and reporting of emissions, composed of four power settings and related operating times for subsonic aircraft engines [Take - Off - 100 % power, 0.7 minutes; Climb - 85 %, 2.2 minutes; Approach - 30 %, 4.0 minutes; Taxi / Ground Idle - 7 %, 26.0 minutes]. (ipcc.ch)
The Hyperloop would send travelers through low - pressure tubes in specialized pods that zoom at high subsonic speeds, reaching more than 700 mph (1,100 kilometers per hour). (cnbc.com)