air penetration

The shape made for better air penetration and higher speeds.

Her pink silk blouse allowed only slight air penetration in order to cool her down.

First, he said, all sources of air penetration into the living space should be sealed with expanding urethane foam before installing floors or walls that will make future access difficult.

Frigate shapes are designed to offer a minimal radar cross section, which also lends them good air penetration; the maneuverability of these frigates has been compared to that of sailing ships.

A layer 2 inches (5 cm) thick suppresses weed growth, reduces moisture evaporation, is easily scratched open to help air penetration, and as it decomposes is pulled down into the soil by worms.

Any weeds that are able to get through the cover are knocked over, but the important purposes for keeping the mulch jostled about are air penetration and the prevention of rain run-off from a packed surface.

In motorcycle prototyping, Moto Guzzi could refine the air stream around the motorcycle itself, develop an envelope of still air around the rider, reduce frontal area, optimize air penetration, and maximize fuel economy.

In early 1976, spurred on by the disappointing lack of pace of the ageing Lotus 72 the previous season, and the indifferent performance of the current Lotus 77, Chapman wrote a 27 page document detailing his ideas on low drag air penetration.

In the event of mass air penetration by an enemy, air defense interceptors stood ready for scrambling with nuclear warhead tipped AIR-2 Genie missiles and were kept on alert status in hardened hangers next to the runway at Naha Air Base near additional weapon storage areas.