Search found 2158 matches

by vishalralatta
Sat Aug 10, 2019 6:20 pm
Forum: Rocket Science
Topic: Rocket equation derivation mistake by my professor?
Replies: 0
Views: 68

Rocket equation derivation mistake by my professor?

In one of my lectures our physics professor gave a derivation of the ideal rocket equation as follows: Let vG>0 be the velocity at which the gas is emitted from the rocket. Let m and v be ...
by vishalralatta
Sat Aug 10, 2019 6:19 pm
Forum: Rocket Science
Topic: Model velocity as function of distance in object subject to drag and propulsion?
Replies: 0
Views: 46

Model velocity as function of distance in object subject to drag and propulsion?

Given an initial speed v0 and acceleration dvdt|0=a0, I need to find velocity as a function of distance knowing that Drag is D=Av² Propulsion is P=Bv+C I already found $v(...
by vishalralatta
Sat Aug 10, 2019 6:19 pm
Forum: Rocket Science
Topic: Force of Gravity of a stationary object acting on another object moving through space?
Replies: 0
Views: 51

Force of Gravity of a stationary object acting on another object moving through space?

Story: I have x and y positions of a spaceship as it moves through space to some goal location at [1000, 700]. A record of its movement is given by: ...
by vishalralatta
Sat Aug 10, 2019 6:18 pm
Forum: Rocket Science
Topic: How does rocket thrust work?
Replies: 0
Views: 55

How does rocket thrust work?

I can't seem to find a specific answer to this anywhere. I understand that in a rocket there is a chemical reaction that causes gas particles to leave the rocket at high velocity. By Newton's third ...
by vishalralatta
Sat Aug 10, 2019 6:18 pm
Forum: Rocket Science
Topic: Question about Thrust; am I correct?
Replies: 0
Views: 47

Question about Thrust; am I correct?

Basically, here's what I understand about Thrust: Thrust is a force. You get it by doing v×dMdT. Pretty basic, because that's the formula you're given. However, because I'm trying to ...
by vishalralatta
Sat Aug 10, 2019 6:18 pm
Forum: Rocket Science
Topic: Can AMO physics be applicable for space travel?
Replies: 0
Views: 53

Can AMO physics be applicable for space travel?

I know it sounds very stupid question. I am working on the AMO physics (Quantum Optics). I recently saw articles about the Spacex, and I thought it is really amazing, and thinking about the possible ...
by vishalralatta
Sat Aug 10, 2019 6:17 pm
Forum: Rocket Science
Topic: Can an accelerometer be used to determine orientation of a rocket under power?
Replies: 0
Views: 50

Can an accelerometer be used to determine orientation of a rocket under power?

I saw a project on Hackaday featuring a model rocket with moveable fins to stabilize the rocket's trajectory: Hackaday. The goal was to arc the rocket to a horizontal trajectory and keep it there. In ...
by vishalralatta
Sat Aug 10, 2019 6:17 pm
Forum: Rocket Science
Topic: What wavelengths of electromagnetic radiation are emitted by the LH2/LOX reaction?
Replies: 0
Views: 48

What wavelengths of electromagnetic radiation are emitted by the LH2/LOX reaction?

Rocket engines such as the Rocketdyne Rocket System 68 and the Space Shuttle Main Engine use liquid hydrogen and liquid oxygen as propellants. The exhaust from this type of engine is notable in ...
by vishalralatta
Sat Aug 10, 2019 6:17 pm
Forum: Rocket Science
Topic: 2 times the velocity, 4 times the energy, 8 times the heat?
Replies: 0
Views: 49

2 times the velocity, 4 times the energy, 8 times the heat?

In SpaceX's webcast today they talked about the first stage getting back to Earth with twice the velocity as usual. I quote: "So 4 times as much energy means harder on the stage, and 8 times as much ...
by vishalralatta
Sat Aug 10, 2019 6:16 pm
Forum: Rocket Science
Topic: How is a rocket mounted w.r.t. gimbal?
Replies: 0
Views: 46

How is a rocket mounted w.r.t. gimbal?

Gimbal system is used to balance the rocket from tripping after its launch. But, how is a rocket mounted with respect to the gimbal system?