And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
The tufts indicate direction of wind flow over the surfaces and would show laminar or turbulent flow. Photos would be taken for later analysis. This is how they did it before computational fluid dynamics software.
Prototype of the OV-22 Osprey?
ReplyDeleteBut without the cracks.
DeleteThat's a brave chappie, there.
ReplyDeleteVertol VZ-2 Test Aircraft.
ReplyDeleteArmy and Navy never could get along.
ReplyDeleteThe tufts indicate direction of wind flow over the surfaces and would show laminar or turbulent flow. Photos would be taken for later analysis. This is how they did it before computational fluid dynamics software.
ReplyDeleteDon in Oregon