A pinch of the proper powder pushes this bullet out the muzzle at subsonic velocities, thus permitting silent fire.
At the same time there were 1,941 infringements by subsonic jets.
It is concluded that the present method is accurate for quantitative predictions of unsteady heat transfer in subsonic turbine flows.
Racks are subsonic filters and should really be thought of as an essential component in any Stereo or Home Cinema system.
Subsonic aircraft have been measured at twice the legal noise level, struggling to take off with heavy loads in adverse conditions.
The barrel was short and the bullet emerged at subsonic speed.
The method is applicable for subsonic flight speeds when the flow over the aircraft is wholly subsonic and fully attached.
With operating costs per passenger of 3.5 times that of a subsonic jet it was never going to be mass transport.