ASTM F330-21

Standard Test Method for Bird Impact Testing of Aerospace Transparent Enclosures

SIGNIFICANCE AND USE
4.1 This test method shall be used for: bird impact testing of aircraft crew compartment transparencies and supporting structure to verify the design; compilation of test data for use in verification of future transparency and supporting structure design and analytical methods; and comparative evaluation of materials.
SCOPE
1.1 This test method covers conducting bird impact tests under a standard set of conditions by firing a packaged bird at a stationary aerospace transparency (windshield, canopy, or window) mounted in a support structure.  
1.2 Units—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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 8.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Apr-2021
• ICS: 49.045 - Structure and structure elements
• Technical Committee: F07 - Aerospace and Aircraft
• Drafting Committee: F07.08 - Transparent Enclosures and Materials

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F330 − 21
Standard Test Method for
1
Bird Impact Testing of Aerospace Transparent Enclosures
ThisstandardisissuedunderthefixeddesignationF330;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2.1.6 test article, n—the transparency and supporting struc-
ture.
1.1 This test method covers conducting bird impact tests
under a standard set of conditions by firing a packaged bird at
3. Summary of Test Method
a stationary aerospace transparency (windshield, canopy, or
3.1 This test method employs a smooth-bore compressed-
window) mounted in a support structure.
gas gun that fires a chicken carcass so that it impacts a
1.2 Units—The values stated in inch-pound units are to be
stationary aerospace transparency mounted in a supporting
regarded as standard. The values given in parentheses are
structure.
mathematical conversions to SI units that are provided for
3.2 The specific parameters described by this test method
information only and are not considered standard.
are:
1.3 This standard does not purport to address all of the
3.2.1 Bird weight and condition,
safety concerns, if any, associated with its use. It is the
3.2.2 Bird velocity, and
responsibility of the user of this standard to establish appro-
3.2.3 Instrumentation.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4. Significance and Use
For specific hazard statements, see Section 8.
1.4 This international standard was developed in accor- 4.1 Thistestmethodshallbeusedfor:birdimpacttestingof
dance with internationally recognized principles on standard- aircraftcrewcompartmenttransparenciesandsupportingstruc-
ization established in the Decision on Principles for the ture to verify the design; compilation of test data for use in
Development of International Standards, Guides and Recom- verification of future transparency and supporting structure
mendations issued by the World Trade Organization Technical design and analytical methods; and comparative evaluation of
Barriers to Trade (TBT) Committee.
materials.
2. Terminology
5. Apparatus
2.1 Definitions:
5.1 Gun,compressed-gas,conforminginprincipletoFig.1,
2.1.1 bird, n—the carcass that is used to impact the test
comprising:
article.
5.1.1 Pressure Tank, of capacity and working pressure as
2.1.2 bird package, n—the bird and container that encases
discussed in Note 1.
the bird to prevent flailing and disintegration enroute to target.
NOTE 1—Agun capable of propelling a 4lb (1.81kg) bird in excess of
2.1.3 gun, n—the device that propels the bird toward the
650 knots (334 m/s) has a barrel 60 ft (18.3 m) long, bore of 6 in.
3 3
(153mm), and a pressure tank volume of 30 ft (0.849 m ) with an
target.
6
allowable working pressure of 250 psi (1.725×10 Pa).
2.1.4 sabot, n—the container that is used to carry the bird
5.1.2 Release Mechanism, comprised of a firing solenoid,
package down the gun barrel.
diaphragm, and a cutter. Upon initiation of the firing sequence,
2.1.5 stripper, n—the device that stops the sabot at the end
the release mechanism allows the compressed gas stored in the
of the gun barrel so that only the bird package impacts the test
pressure tank to flow rapidly into the gun barrel and propel the
article.
projectile.
1 NOTE 2—The most common designs normally use either one or two
This test method is under the jurisdiction of ASTM Committee F07 on
diaphragms in the release mechanism. In the single diaphragm design, the
Aerospace andAircraft and is the direct responsibility of Subcommittee F07.08 on
diaphragm is mechanically ruptured upon firing (see Fig. 1). In the dual
Transparent Enclosures and Materials.
diaphragm system, pressurized gas between the two pressurized gas
Current edition approved May 1, 2021. Published June 2021. Originally
approved in 1979. Last previous edition approved in 2016 as F330–16. DOI: diaphragms is bled to initiate firing by allowing the stored gas to burst
10.1520/F0330-21. each diaphragm in rapid succession.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F330 − 21
FIG. 1 Representative Air Gun
5.1.3 Barrel (Launch Tube), a smooth bore tube that guides points throughout the test article or by use of infrared (pho-
thepackagedbird(andsabot,ifused)dur
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F330 − 16 F330 − 21
Standard Test Method for
1
Bird Impact Testing of Aerospace Transparent Enclosures
This standard is issued under the fixed designation F330; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers conducting bird impact tests under a standard set of conditions by firing a packaged bird at a stationary
transparency aerospace transparency (windshield, canopy, or window) mounted in a support structure.
1.2 Units—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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. For specific hazard statements, see Section 8.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Terminology
2.1 Definitions:
2.1.1 bird, n—the carcass that is used to impact the test article.
2.1.2 bird package, n—the bird and container that encases the bird to prevent flailing and disintegration enroute to target.
2.1.3 gun, n—the device that propels the bird toward the target.
2.1.4 sabot, n—the container that is used to carry the bird package down the gun barrel.
2.1.5 stripper, n—the device that stops the sabot at the end of the gun barrel so that only the bird package impacts the test article.
2.1.6 test article, n—the transparency and supporting structure.
3. Summary of Test Method
3.1 This test method employs a smooth-bore birdcompressed-gas gun that fires a chicken carcass so that it impacts a stationary
aerospace transparency mounted in a supporting structure.
1
This test method is under the jurisdiction of ASTM Committee F07 on Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.08 on Transparent
Enclosures and Materials.
Current edition approved April 1, 2016May 1, 2021. Published April 2016June 2021. Originally approved in 1979. Last previous edition approved in 20102016 as
F330 – 10.F330 – 16. DOI: 10.1520/F0330-16.10.1520/F0330-21.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F330 − 21
3.2 The specific parameters described by this test method are:
3.2.1 Bird weight and condition,
3.2.2 Bird velocity, and
3.2.3 Instrumentation.
4. Significance and Use
4.1 This test method shall be used for: bird impact testing of aircraft crew compartment transparencies and supporting structure
to verify the design; compilation of test data for use in verification of future transparency and supporting structure design and
analytical methods; and comparative evaluation of materials.
5. Apparatus
5.1 Gun, compressed gas, compressed-gas, conforming in principle to Fig. 1, comprising:
5.1.1 Pressure Tank, of capacity and working pressure as discussed in Note 1.
NOTE 1—A gun capable of propelling a 4-lb (1.81-kg)4 lb (1.81 kg) bird in excess of 650 knots (334 m/s) has a barrel 60 ft (18.3 m) long, bore of 6 in.
3 3 6
(153 mm), and a pressure tank volume of 30 ft (0.849 m ) with an allowable working pressure of 250 psi (1.725 × 10 Pa).
5.1.2 Release Mechanism, comprised of a firing solenoid, diaphragm, and a cutter. Upon initiation of the firing sequence, the
release mechanism allows the compressed gas stored in the pressure tank to flow rapidly into the gun barrel and propel the
projectile.
NOTE 2—The most common designs normally use either one or two diaphragms in the release mechanism. In the single diaphragm design, the diaphragm
is mechanically ruptured upon firing (see Fig. 1). In the dual diaphragm system, pressurized gas between the two pressur
...