Imagine a rocket in space using the maneuvering thrusters in combination to produce forward thrust. With a sufficiently long burn they could accelerate the rocket to the same velocity as a very short burn of the main engine.
Do you agree?
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Kevin Johnson wrote: ↑Sat Jun 15, 2019 2:14 pm
Imagine a rocket in space using the maneuvering thrusters in combination to produce forward thrust. With a sufficiently long burn they could accelerate the rocket to the same velocity as a very short burn of the main engine.
Do you agree?
Yes, how does that relate to the question at hand?
Kevin Johnson wrote: ↑Sat Jun 15, 2019 2:14 pm
Imagine a rocket in space using the maneuvering thrusters in combination to produce forward thrust. With a sufficiently long burn they could accelerate the rocket to the same velocity as a very short burn of the main engine.
Do you agree?
Yes, how does that relate to the question at hand?
It is an opportunity for you to reevaluate your previous remark below. Now you know of at least one parallel case where it it is incorrect. The mass contained within a flow can be compared to the mass of the rocket.
SchmidtMotorWorks previously wrote:
If they end up at the same flow, that would be because the force was equal.
If the force is equal, the acceleration is equal.
Safety engineers go to great lengths with crumple zones to reduce the rate at which an automobile, and passenger within, ends up at a terminal velocity of zero.
Do you agree that it is important that some of the mass in the considered grouping of automobile and passenger arrives at terminal velocity later rather than sooner?
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Its the same as your spring thing, something had to make it move first, wether that is it being pulled down and let go or lifted up and dropped, at some stage it started to move, and accelerate to whatever is the max rate, before it reached its equilibrium point. Once at that point it is the same movement or "flow".
The effect of gravity maybe negligible but is it still there.
Ive never said gravity pushes the air into the duct?
Another question i asked but it has been lost, if you look at this question about tunnel rams and look at it as a whole system, with fuel and air then does gravity make a difference?
Someone mentioned an upside down tunnel ram would be better because of the fuel situation.
How well would a tunnel ram and carb combo work on its side ie a V8 rolled 90degrees? As a whole system, with fuel and carb.
BenE64 wrote: ↑Sat Jun 15, 2019 4:27 pm
Its the same as your spring thing, something had to make it move first, wether that is it being pulled down and let go or lifted up and dropped, at some stage it started to move, and accelerate to whatever is the max rate, before it reached its equilibrium point. Once at that point it is the same movement or "flow".
The effect of gravity maybe negligible but is it still there.
Ive never said gravity pushes the air into the duct?
Another question i asked but it has been lost, if you look at this question about tunnel rams and look at it as a whole system, with fuel and air then does gravity make a difference?
Someone mentioned an upside down tunnel ram would be better because of the fuel situation.
How well would a tunnel ram and carb combo work on its side ie a V8 rolled 90degrees? As a whole system, with fuel and carb.
It seems like you are ignoring the additional head on the duct entering from the bottom.
Gravity is trivial compared to centrifugal force from the mixture turning even a small angle.
Last edited by SchmidtMotorWorks on Sat Jun 15, 2019 5:08 pm, edited 2 times in total.
Kevin Johnson wrote: ↑Sat Jun 15, 2019 2:14 pm
Imagine a rocket in space using the maneuvering thrusters in combination to produce forward thrust. With a sufficiently long burn they could accelerate the rocket to the same velocity as a very short burn of the main engine.
Do you agree?
Yes, how does that relate to the question at hand?
It is an opportunity for you to reevaluate your previous remark below. Now you know of at least one parallel case where it it is incorrect. The mass contained within a flow can be compared to the mass of the rocket.
SchmidtMotorWorks previously wrote:
If they end up at the same flow, that would be because the force was equal.
If the force is equal, the acceleration is equal.
Safety engineers go to great lengths with crumple zones to reduce the rate at which an automobile, and passenger within, ends up at a terminal velocity of zero.
Do you agree that it is important that some of the mass in the considered grouping of automobile and passenger arrives at terminal velocity later rather than sooner?
Diagram your argument, you have not shown how it is related.
Please just stick to diagramming the question at hand.
The diagram makes it easy to understand and see if it is correct or if something has been left out.
If you can't diagram it, then I don't think you have a case.
Keep in mind, physical test does not show any difference.
Kevin Johnson wrote: ↑Sat Jun 15, 2019 4:11 pm
Imagine a rocket in space using the maneuvering thrusters in combination to produce forward thrust. With a sufficiently long burn they could accelerate the rocket to the same velocity as a very short burn of the main engine.
Yes, how does that relate to the question at hand?
It is an opportunity for you to reevaluate your previous remark below. Now you know of at least one parallel case where it it is incorrect. The mass contained within a flow can be compared to the mass of the rocket.
SchmidtMotorWorks previously wrote:
If they end up at the same flow, that would be because the force was equal.
If the force is equal, the acceleration is equal.
Safety engineers go to great lengths with crumple zones to reduce the rate at which an automobile, and passenger within, ends up at a terminal velocity of zero.
Do you agree that it is important that some of the mass in the considered grouping of automobile and passenger arrives at terminal velocity later rather than sooner?
Diagram your argument, you have not shown how it is related.
Please diagram your argument that:
SchmidtMotorWorks previously wrote:
If they end up at the same flow, that would be because the force was equal.
If the force is equal, the acceleration is equal.
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