Accession Number:

AD0744598

Title:

Aerial Penetrometers for Soil Trafficability Determination

Descriptive Note:

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA

Personal Author(s):

Report Date:

1972-01-01

Pagination or Media Count:

21.0

Abstract:

The aerial penetrometer, an air-droppable indicator of soil strength or related properties, is useful for evaluating the ability of natural soil areas to sustain the loads and traffic of aircraft or vehicles. Several configurations of this device, developed, tested, and demonstrated by the Air Force Cambridge Research Laboratories over many years, are described. They range from simple go-no go flare indicators of soil shear strength, through adjustable devices to indicate a range of determined strength, to sophisticated models which telemeter the depth of penetration upon impact. Penetrometer functions of drop velocity, deceleration, impact force, and depth of penetration, calibration with static and dynamic strength of various soils, and correlation of aerially-determined soil strength to aircraft and vehicle mobility criteria are discussed.

Subject Categories:

  • Soil Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE