ASTM-F320 Standard Test Method for Hail Impact Resistance of Aerospace Transparent Enclosures

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Standard Test Method for Hail Impact Resistance of Aerospace Transparent Enclosures



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1.1 This test method covers the determination of the impact resistance of an aerospace transparent enclosure, hereinafter called windshield, during hailstorm conditions using simulated hailstones consisting of ice balls molded under tightly controlled conditions.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Section 7.

Significance and Use

4.1 This test method shall be used to determine the hail impact resistance of windshields for acceptance, design, service, or research purposes. By coupling this method with the installed angle and velocity of a specific aerospace vehicle, design allowables, criteria, and tolerances can be established for that vehicle's windshield.


hail; ice; impact; transparent enclosures ;; ICS Number Code 49.045 (Structure and structure elements)

To find similar documents by ASTM Volume:

15.03 (Space Simulation; Aerospace and Aircraft; Composite Materials)

To find similar documents by classification:

49.045 (Structure and structure elements)

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Publication Date

April 1, 2016

Document Type

Test Method

Page Count

8 pages

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