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schonovic
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If I'm traveling at 22000 miles per second and fire a thruster with an exhaust velocity of 1700 miles per second does the thrust creat drag because I'm going faster? If not what is the effect?
schonovic said:If I'm traveling at 22000 miles per second and fire a thruster with an exhaust velocity of 1700 miles per second does the thrust creat drag because I'm going faster? If not what is the effect?
schonovic said:If I'm traveling at 22000 miles per second and fire a thruster with an exhaust velocity of 1700 miles per second does the thrust creat drag because I'm going faster? If not what is the effect?
Wouldn't this also be an issue for a rocket in the atmosphere (although this post's example speeds are way to high for a rocket in the atmoshpere)? In reasonbly dense atmosphere, if rocket thrust is slower than rocket speed, you'd end up with a net drag at the aft end of a rocket.cjl said:This can be contrasted with a jet aircraft - in the case of a jet aircraft, the reaction mass is primarily the air which the jet is flying through. Because the air is not traveling with the jet, the jet must have an exhaust velocity higher than its flight velocity in order to continue producing thrust.
rcgldr said:Wouldn't this also be an issue for a rocket in the atmosphere (although this post's example speeds are way to high for a rocket in the atmoshpere)? In reasonbly dense atmosphere, if rocket thrust is slower than rocket speed, you'd end up with a net drag at the aft end of a rocket.
In order to achieve a higher velocity, the rocket must continuously burn its fuel and expel it as exhaust, creating a thrust force. However, the rocket's velocity is not solely determined by the thrust of its own thruster. It also takes into account factors such as the rocket's mass, the duration of the burn, and external forces like gravity.
The velocity of a rocket is directly proportional to the thrust of its thruster. This means that as the thrust increases, so does the velocity of the rocket. However, other factors also play a role in determining the rocket's final velocity.
Yes, a rocket can continue to accelerate even after its thruster has stopped firing. This is because of the conservation of momentum. Once a rocket is in motion, it will continue to move at a constant velocity unless acted upon by an external force, such as air resistance or gravity.
The shape and design of a rocket can greatly affect its velocity. A streamlined and aerodynamic rocket will experience less air resistance, allowing it to achieve higher velocities. Additionally, the placement and direction of the thruster can also impact the rocket's velocity.
In addition to the thruster, a rocket's velocity can be affected by its mass, the duration of the burn, external forces like gravity and air resistance, and even the rotation of the Earth. These factors must all be taken into account in order to accurately calculate a rocket's velocity.