Here's Why Rocket Launch Trajectories Are Curved Like Bananas
Jalopnik • • science
Key Points:
- Rocket launches follow a curved trajectory called a brachistochrone curve, which is the most fuel-efficient path to orbit, optimizing fuel use and payload capacity.
- Unlike suborbital missions that go straight up and down for brief weightlessness, orbital launches require a gravity turn to achieve stable orbit by balancing downward gravitational pull with horizontal velocity.
- The gravity turn allows rockets to use Earth's gravity to gain acceleration without extra fuel, helping them reach escape velocity and enter orbit safely.
- Most orbital launches head east to take advantage of Earth's rotational speed, gaining an additional velocity boost of about 1,037 mph near the equator, which reduces fuel consumption.
- Launch sites like Kennedy Space Center are chosen for their proximity to the equator to maximize this rotational speed advantage and improve launch efficiency.