Aces High Bulletin Board
General Forums => Aces High General Discussion => Topic started by: ccvi on March 20, 2003, 07:54:23 AM
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Yesterday I decided to ditch my bombs when flyinging low - 100 feet over water.
I was expecting that they just dropped into the water without exploding.
But I was wrong. They were dropping far longer than expected, way through the surface of the water. Deep enough to explode, not deep enough to not kill me.
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how fast where you flying?
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Time to hit the ground does not depend on the speed of the aircraft (if it's flying level).
Anyway, I tried at the same speed over shallow water (very close to the the shore) and further out. Only further out it gets me killed.
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WRONG!
The bomb doesn't just stop & fall down, it keeps some of the energy from the aircraft's speed (its forward momentom), when the momentom wears off the bombs kinetic energy direction shifts downwards
The faster the plane is going, the more momentom the bomb will have, and therefore the slower the rate of shift on the direction on the kinetic energy.
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in AH the bombs must travel 1000 ft to arm, that does NOT mean 1000 ft AGL, that means 1000 ft before impact, like they said if you drop at 300 mph the bomb is also moving forward at 300 mph
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Originally posted by ccvi
Time to hit the ground does not depend on the speed of the aircraft (if it's flying level).
Anyway, I tried at the same speed over shallow water (very close to the the shore) and further out. Only further out it gets me killed.
Bombs arm after 1000' of travel, not after 1000' of fall. Ignoring drag, and the fact that the path is actually parabolic, not linear, a plane would have to be flying level at less than about 270 TAS at 100' not to have the bombs arm before impact. At 300 TAS, there is more than enough forward throw on the bomb for it to arm before impact.
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Thank you.
I just wonder why it takes so many words to state a simple fact like arming depends on distance, not on time.
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'cos i'm good at science, i wanna show off:)
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Originally posted by BenDover
'cos i'm good at science, i wanna show off:)
ok wierd science boy built me a 'carrie-anne-moss' android love slave......
AND I want it yesterday! :D
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sorry, my experimental time machine only goes forward.......by the amount of time i waste on it........
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Originally posted by BenDover
WRONG!
The bomb doesn't just stop & fall down, it keeps some of the energy from the aircraft's speed (its forward momentom), when the momentom wears off the bombs kinetic energy direction shifts downwards
The faster the plane is going, the more momentom the bomb will have, and therefore the slower the rate of shift on the direction on the kinetic energy.
I do hope you are not trying to say that the bomb does not immediately begin to accellerate towards the center of the earth at 9.8 m/s/s.
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no, i was trying too say a bomb doesn't just fall straight down
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A few of the finnish pilots have become experts in "bomb fishing" as well. :D
Camo
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The faster the plane is going, the more momentom the bomb will have, and therefore the slower the rate of shift on the direction on the kinetic energy.
Say what?!?
The speed of the plane in the X-axis has no affect on the bomb's acceleration in the Y-axis, which is 9.8 meters per second squared (gravity). For an altitude of only 30 meters (100 feet), that means the bomb will land on the ground (or water) in about 2.5 seconds. I used this equation.
T = Square root [ 2 * (D/A)]
T = time in seconds
D= Distance in meters
A= Acceleration in meters per second per second
T= Square root [2 * (30/9.8)]
Whether the plane is moving or not makes no difference. Two and a half seconds is all the time needed for the bomb to hit the ground.
'cos i'm good at science, i wanna show off
Well, the rest of the guys actually answered the question correctly. The distance the bomb traveled is different if you are sitting still or flying along at 300 mph. If you drop a bomb from a stationary location at an altitude of 100 feet, that is the distance the bomb travels to arm itself. 100 feet.
If you are cooking along at 300 mph (480 kph = 133 mps), the bomb will travel horizontally a distance of about 332 meters, which is about 1100 feet.
So, the real question is this.
Do bombs arm themselves after a certain amount of time with timer or some sorts, or is it based on distance traveled? In Aces High it seems to be distance.
So don't drop your bombs while flying low AND fast.
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Originally posted by BenDover
'cos i'm good at science, i wanna show off:)
You don't even know how to spell momentum :p
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I'm sorry if my dyslexia is bothering you
Btw, I'm better at the other 2 areas of science, Biology and Chemistry, physics is my weak point
But what i'm trying to say is like this, 2 people cross the road at the same speed, but at different angles to the curb.
One at 20 degrees, the other at 50 degrees, which one reaches the other curb first?
If you said 20 degrees, correct. This is because its a shorter distance for him than the guy going at 50 degrees, everyone agree up till here?.....
Now then, if one plane is going 400 mph, and another is going 250 mph, doesn't the faster one's bombs go at a bigger angle from the verticle than the one going 250 mph?
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BenDover, discussion isn't about flight paths of bombs but what variable makes them arm.
If you want to show off present how to calculate the length of the flight path of the bomb, then solve the integral.
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HT has said eggs have to TRAVEL 1000ft minimum to arm and explode. This was done to stop bomb laden craft from being suicide aircraft when map room was on the fields instead of towns. Guys would drive said craft to c47 or m3 release bombs and kill goon and themselves but stop capture.
ps:
As for other discussion :p , a bullet fired out of a barrel and 1 dropped at same height and time as fired 1 will hit the ground at exact same time. Gravity has same effect on all objects. But fired 1 will of course have travelled more distance, albeit horizontal.
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9.8m/s/s
Unless someone has invented a new phisics model...
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For the last f00king time!
I'm not saying stuff falls slower if it goes forward faster, I must of worded it badly....
I was just trying to say (in a long way) that a bomb going forward goes a longer distance than one going straight down
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As for other discussion , a bullet fired out of a barrel and 1 dropped at same height and time as fired 1 will hit the ground at exact same time. Gravity has same effect on all objects. But fired 1 will of course have travelled more distance, albeit horizontal.
falcon, your forgeting a whee bit of initial acceleration( gunpowder ) ;)
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and following up the bullet analogy, the round fired (assuming it was fired flat) may cover 300-yds before falling 3-feet, where as the second dropped bullet fell the same 3-feet in the same time.
the difference being the 300+yds travelled.
this analogy works best in a vacuum of course.