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A gravity turn is commonly used with rocket powered vehicles that launch vertically, like the Space Shuttle. The rocket begins by flying straight up, gaining both vertical speed and altitude. During this portion of the launch, gravity acts directly against the thrust of the rocket, lowering its vertical acceleration.
Without applying force (such as firing a rocket engine), the period and shape of the satellite's orbit will not change. A satellite in a low orbit (or a low part of an elliptical orbit) moves more quickly with respect to the surface of the planet than a satellite in a higher orbit (or a high part of an elliptical orbit), due to the stronger ...
The Oberth effect is used in a powered flyby or Oberth maneuver where the application of an impulse, typically from the use of a rocket engine, close to a gravitational body (where the gravity potential is low, and the speed is high) can give much more change in kinetic energy and final speed (i.e. higher specific energy) than the same impulse ...
To reach orbit, the rocket must impart to the payload a delta-v of about 9.3–10 km/s. This figure is mainly (~7.8 km/s) for horizontal acceleration needed to reach orbital speed, but allows for atmospheric drag (approximately 300 m/s with the ballistic coefficient of a 20 m long dense fueled vehicle), gravity losses (depending on burn time ...
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The rocket simply initiated its roll program at the appropriate time after launch, and rolled until an adequate amount of time had passed to ensure that the desired roll angle was achieved. [ 3 ] Roll on the Saturn V was initiated by tilting the engines simultaneously using the roll and pitch servomechanisms , which served to initiate a rolling ...
Yet thanks to this week's run-up, Rocket Lab already trades at more than $10 a share. ... larger, and more capable Neutron rocket would help turn Rocket Lab profitable by 2026. However, management ...
In the course of our chat, we discussed Rocket Lab's rise to become the second most frequent U.S. rocket launcher after SpaceX, and also Rocket Lab's efforts to develop a new reusable rocket in ...