Why do open car windows make a throbbing noise? Introduction Have you ever opened a window in a car, only for your ears to be met with an annoying throbbing noise? It’s a rhythmic thumping sound, sometimes fast, sometimes slow. It can very quickly become uncomfortable (and the driver of the car or passengers may […]
What is specific impulse, why is it measured in seconds and how do you calculate it? Introduction There are hundreds of different factors to consider when designing a rocket engine. However, one of the most important is specific impulse. What is specific impulse exactly? Specific impulse (or ISP for short) is the measure of how
What is specific impulse, why is it measured in seconds and how do you calculate it? Read More »