弓箭转不转,视频说了算!

c
coolwin
楼主 (文学城)

https://www.youtube.com/watch?v=fNzMZDhhYYk

 

 

c
coolwin
快去找块豆腐撞S算了!
t
thrawn
一般都旋转的只不过不快
x
xsing
这并非设计原意,是尾翼安装误差,还不明白,笨
x
xsing
只要尾翼设计一个角度,就能高速旋转增加稳定性和精度,但弓能量有限,不能这么做
x
xsing
能量低了,射程和杀伤力怎么办,教都教不会你啊。这么低速的旋转有个鸟用
c
coolwin
"It is a common practice to fit fletchings at an angle to the sh

http://www.tap46home.plus.com/mechanics/fspin.htm

"It is a common practice to fit fletchings at an angle to the shaft or use fletchings which have a built in angle to cause the arrow to spin in flight around the shaft axis. Why do this and how does it work?"

 

SPINNING ARROWS

It is a common practice to fit fletchings at an angle to the shaft or use fletchings which have a built in angle to cause the arrow to spin in flight around the shaft axis. Why do this and how does it work?

An individual arrow can have a bias to curve in flight. This may result from the arrow not being perfectly symmetrical e.g. slightly bent, or from having a non symmetrical pile e.g. a broadhead. When the arrow flies, any asymmetry will result in a torque on the arrow increasing the offset angle and resulting in a curved flight path. By making the arrow spin around its axis the curved flight path is converted into a helical path as the 'bias' is rotated in all directions. This approach works equally well with all arrows, all with different biases and tightens the arrow groups. The diagram illustrates the effect on arrow flight path of arrow spinning.

x
xsing
这里有物理专业的人么?呵呵
c
coolwin
希望你能看得懂E文。
c
coolwin
你离开中国的军工行业,实乃国之大幸!
x
xsing
现在比赛用的弓,因为新材料弹力大增。有专门配旋转翼的。你参加过射箭活动吗?
x
xsing
那未必,不然我就没钱雇人了
b
bluesky231
你们这号人是不是拿同一个脚本,念同一段台词。台湾骗子不都是这样骗吗。
B
BeyondWind
力没变,材料轻,速度快了。弓是和箭杆同时加速的。
t
thrawn
和底下所谈一个原理。老式或多或少都会转。新式的因材料轻了可以在一定距离中不转。
t
thrawn
低速旋转一般无加成作用但提高了些稳定性而且毕竟还是旋转了。这就证明pop4所说属实

别忘了原题是“箭转否”而非杀伤力、射程等等。那些可另开帖。