ASTM F330-89(2004)
(Test Method)Standard Test Method for Bird Impact Testing of Aerospace Transparent Enclosures
Standard Test Method for Bird Impact Testing of Aerospace Transparent Enclosures
SIGNIFICANCE AND USE
This test method may 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 transparency mounted in a support structure.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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 8.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:F330–89(Reapproved2004)
Standard Test Method for
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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 Department of Defense.
1. Scope 3.2.2 Bird velocity, and
3.2.3 Instrumentation.
1.1 This test method covers conducting bird impact tests
under a standard set of conditions by firing a packaged bird at
4. Significance and Use
a stationary transparency mounted in a support structure.
4.1 Thistestmethodmaybeusedfor:birdimpacttestingof
1.2 The values stated in inch-pound units are to be regarded
aircraftcrewcompartmenttransparenciesandsupportingstruc-
as the standard. The values given in parentheses are for
ture to verify the design; compilation of test data for use in
information only.
verification of future transparency and supporting structure
1.3 This standard does not purport to address all of the
design and analytical methods; and comparative evaluation of
safety concerns, if any, associated with its use. It is the
materials.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Apparatus
bility of regulatory limitations prior to use. For specific hazard
5.1 Gun, compressed gas, conforming in principle to Fig. 1,
statements, see Section 8.
comprising:
2. Terminology 5.1.1 Pressure Tank, of capacity and working pressure as
discussed in Note 1.
2.1 Definitions:
2.1.1 bird—thecarcassthatisusedtoimpactthetestarticle.
NOTE 1—Agun capable of propelling a 4-lb (1.81-kg) bird in excess of
2.1.2 bird package—the bird and container that encases the 650 knots (334 m/s) has a barrel 60 ft (18.3 m) long, bore of 6 in. (153
3 3
mm), and a pressure tank volume of 30 ft (0.849 m ) with an allowable
bird to prevent disintegration enroute to target.
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working pressure of 250 psi (1.725 310 Pa).
2.1.3 gun—the device that propels the bird toward the
target. 5.1.2 Release Mechanism, comprised of a firing solenoid,
2.1.4 sabot—the container that is used to adapt the bird
diaphragm, and a cutter. Upon initiation of the firing sequence,
package to the gun barrel. the release mechanism allows the compressed gas stored in the
2.1.5 stripper—the device that stops the sabot at the end of
pressure tank to flow rapidly into the gun barrel and propel the
the gun barrel so that only the bird and package exits from the projectile.
barrel.
NOTE 2—The most common designs normally use either one or two
2.1.6 test article—the transparency and supporting struc-
diaphragms in the release mechanism. In the single diaphragm design, the
ture.
diaphragm is mechanically ruptured upon firing (see Fig. 1). In the dual
diaphragm system, pressurized gas between the two pressurized gas
3. Summary of Test Method
diaphragms is bled to initiate firing by allowing the stored gas to burst
each diaphragm in rapid succession.
3.1 This test method employs a smooth-bore bird gun that
fires a chicken carcass so that it impacts a stationary aerospace
5.1.3 Barrel (Launch Tube), a smooth bore tube that guides
transparency mounted in a supporting structure.
thepackagedbird(andsabotifused)duringitsaccelerationby
3.2 The specific parameters described by this test method
the expanding air from the pressure tank. The bore and length
are:
of the barrel is chosen both to accommodate the largest of the
3.2.1 Bird weight and condition,
projectiles to be used and for the overall performance require-
ments of the gun.
5.1.4 Sabot Stripper may be mounted at the end of the
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This test method is under the jurisdiction of ASTM Committee F07 on
launcher tube. The purpose of the sabot stripper is to arrest or
Aerospace andAircraft and is the direct responsibility of Subcommittee F07.08 on
Transparent Enclosures and Materials. deflectthesabot,allowingonlythepackagedbirdtoimpactthe
Current edition approved Oct. 1, 2004. Published October 2004. Originally
test article.
approved in 1979. Last previous edition approved in 1999 as F330–89 (1999).
DOI: 10.1520/F0330-89R04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F330–89 (2004)
FIG. 1 Representative Air Gun
5.2 Velocity Measurement System: 5.4 Test Instrumentation:
5.2.1 The essential features of the velocity measurement
5.4.1 Weight Measurement—The weight scale shall have an
system are that it be accurate and repeatable, not be triggered
accuracy of at least 0.063 oz (1.8 g).
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