Given Hydras are (at sea level) slower than the speed of sound, the sound should be similar near the receiving end correct? Just less pause between the launch and boom sounds of course... Also would the hover-volley have been on purpose training technique?
I'm fairly confident of my "gut" answer, but I want to verify by looking some stuff up. Of course you're the one asking a question requiring me to do math and find references... ** I'll even convert from Freedom Units for you, lol: The speed of the M151 10lb warhead rocket is ≈730 m/s, 1.1 seconds after launch. (just for "wealth of knowledge", it's traveling ≈ 195 m/s at 5km downrange, which takes ≈15 seconds.) Google states the speed of sound at sea-level is ≈340 m/s. So it's going almost 2x Mach at launch. About as fast as a 7.62mm bullet. -------------------------------------------- This "hover" engagement was the normal way to fire in the old days, pre Iraq/Afghanistan COIN. Gunnery engagements typically were structured as "hover" and "running" in those days. Here you can see the pilot tilt the aircraft nose up, to match the symbology on the MFD to the range of the target. Targets were probably three or four km away. Very difficult and finicky to achieve with unguided munitions.
@@Barundus yup, I messed up my math, yeah, you'd be feeling the gentle dirt rain before hearing the launch/flight (if you can still hear). Secretly you know it's pitching up like that from "pre-recoil" inflicted by those singular rocket launches ;-)
Given Hydras are (at sea level) slower than the speed of sound, the sound should be similar near the receiving end correct? Just less pause between the launch and boom sounds of course...
Also would the hover-volley have been on purpose training technique?
I'm fairly confident of my "gut" answer, but I want to verify by looking some stuff up.
Of course you're the one asking a question requiring me to do math and find references...
**
I'll even convert from Freedom Units for you, lol:
The speed of the M151 10lb warhead rocket is ≈730 m/s, 1.1 seconds after launch. (just for "wealth of knowledge", it's traveling ≈ 195 m/s at 5km downrange, which takes ≈15 seconds.)
Google states the speed of sound at sea-level is ≈340 m/s.
So it's going almost 2x Mach at launch. About as fast as a 7.62mm bullet.
--------------------------------------------
This "hover" engagement was the normal way to fire in the old days, pre Iraq/Afghanistan COIN.
Gunnery engagements typically were structured as "hover" and "running" in those days.
Here you can see the pilot tilt the aircraft nose up, to match the symbology on the MFD to the range of the target. Targets were probably three or four km away.
Very difficult and finicky to achieve with unguided munitions.
@@Barundus yup, I messed up my math, yeah, you'd be feeling the gentle dirt rain before hearing the launch/flight (if you can still hear).
Secretly you know it's pitching up like that from "pre-recoil" inflicted by those singular rocket launches ;-)