05-25-2007, 12:48 AM
For Stefanos :- One of the major problems in trying to take a scientific approach to this subject is the number of variables !
Comparisons with modern javelin throwers are hopeless, because they use an aerodynamic javelin made of modern materials, not to mention modern specialist training techniques !
Nevertheless, here are some figures for javelins of the original type.....
Mens olympics,1908 ; wt 0.8 kg, range 60m, velocity 24.5 m/sec, initial kinetic energy, 240 joules.
Womens olympics, 1908 ; wt 0.6 kg,range 61m, velocity, 24.5 m/sec, initial kinetic energy, 182 joules.
And here are some more figures for an ancient type javelin of 0.8 kg, thrown by a male non-trained athlete;
Thrown with run-up: range, 44m, velocity 21m/sec, initial energy 190 joules
Thrown taking one pace: range 29m, vel 17m/sec, initial energy 111 joules
Thrown with 'amentum' ( throwing loop),taking one pace : range 45 m, vel 22m/sec ,initial energy 200 joules
Thrown standing: range 15 m vel 12m/sec , initial energy 60 joules.
Due to measuring difficulties these figures might be out somewhat, and should be treated as approximate .
Now of course, you could go out tomorrow, using a different javelin, and yourself throw and obtain different results.........
We must also consider that much kinetic energy would be lost in flight. An estimate might be 10-30%.
This should help readers to appreciate some of the difficulties and variables involved in this whole subject !
Comparisons with modern javelin throwers are hopeless, because they use an aerodynamic javelin made of modern materials, not to mention modern specialist training techniques !
Nevertheless, here are some figures for javelins of the original type.....
Mens olympics,1908 ; wt 0.8 kg, range 60m, velocity 24.5 m/sec, initial kinetic energy, 240 joules.
Womens olympics, 1908 ; wt 0.6 kg,range 61m, velocity, 24.5 m/sec, initial kinetic energy, 182 joules.
And here are some more figures for an ancient type javelin of 0.8 kg, thrown by a male non-trained athlete;
Thrown with run-up: range, 44m, velocity 21m/sec, initial energy 190 joules
Thrown taking one pace: range 29m, vel 17m/sec, initial energy 111 joules
Thrown with 'amentum' ( throwing loop),taking one pace : range 45 m, vel 22m/sec ,initial energy 200 joules
Thrown standing: range 15 m vel 12m/sec , initial energy 60 joules.
Due to measuring difficulties these figures might be out somewhat, and should be treated as approximate .
Now of course, you could go out tomorrow, using a different javelin, and yourself throw and obtain different results.........
We must also consider that much kinetic energy would be lost in flight. An estimate might be 10-30%.
This should help readers to appreciate some of the difficulties and variables involved in this whole subject !
"dulce et decorum est pro patria mori " - Horace
(It is a sweet and proper thing to die for ones country)
"No son-of-a-bitch ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country" - George C Scott as General George S. Patton
Paul McDonnell-Staff
(It is a sweet and proper thing to die for ones country)
"No son-of-a-bitch ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country" - George C Scott as General George S. Patton
Paul McDonnell-Staff
