mlorrey - 8/8/2006 9:22 PMQuoteDana - 5/8/2006 7:27 PMQuotemlorrey - 5/8/2006 11:36 AMPlease name some military aircraft that commonly use boron composites... with cites.Aircraft applique armor: http://www.ceradyne.com/Products/Armor_Aircraft.aspQuote: "The first major military production use of boron fiber was for the horizontal stabilizers on the Navy's F-14 Tomcat interceptor." 35+ years ago, man! http://www.centennialofflight.gov/essay/Evolution_of_Technology/composites/Tech40.htmLink with diagram of F-14 horizontal stabilizer materials: http://www.anft.net/f-14/f14-detail-horizstab.htmThe F-15 (rudder skins- see http://www.csd.uwo.ca/~pettypi/elevon/baugher_us/f015.html ) and Shuttle Orbiter (see http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts_coord.html ) also use 'em. Also the F-16. (see http://www.tpub.com/content/aviation/14014/css/14014_343.htm ) Even with the Tomcat out of service, you can't get much more "common" in the western world than the F-15 and F-16. All of these vehicles were designed in the late 1960s/early 1970s and the use of boron in composite structures has proliferated since then, although other materials have eclipsed it in recent years. It's also used in composite structure repairs.http://www.specmaterials.com/applications.htmNow, how many of these were manufactured or maintained at Groom Lake? None.BTW: I worked on the F-15. The horizontal stabilizers weren't classified. There would be no reason to dispose of airframe materials on Groom Lake for this aircraft, nor, if boron composites of the same sort were used in a classified aircraft at Groom Lake, would they need to be disposed of there, because, as you say, their use is rather common in airframe structural materials, ergo there is no operational security or other reasons to classify the production and disposal of waste of that nature. Nor are those particular types of boron composites all that great at burning.
Dana - 5/8/2006 7:27 PMQuotemlorrey - 5/8/2006 11:36 AMPlease name some military aircraft that commonly use boron composites... with cites.Aircraft applique armor: http://www.ceradyne.com/Products/Armor_Aircraft.aspQuote: "The first major military production use of boron fiber was for the horizontal stabilizers on the Navy's F-14 Tomcat interceptor." 35+ years ago, man! http://www.centennialofflight.gov/essay/Evolution_of_Technology/composites/Tech40.htmLink with diagram of F-14 horizontal stabilizer materials: http://www.anft.net/f-14/f14-detail-horizstab.htmThe F-15 (rudder skins- see http://www.csd.uwo.ca/~pettypi/elevon/baugher_us/f015.html ) and Shuttle Orbiter (see http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts_coord.html ) also use 'em. Also the F-16. (see http://www.tpub.com/content/aviation/14014/css/14014_343.htm ) Even with the Tomcat out of service, you can't get much more "common" in the western world than the F-15 and F-16. All of these vehicles were designed in the late 1960s/early 1970s and the use of boron in composite structures has proliferated since then, although other materials have eclipsed it in recent years. It's also used in composite structure repairs.http://www.specmaterials.com/applications.htm
mlorrey - 5/8/2006 11:36 AMPlease name some military aircraft that commonly use boron composites... with cites.
mlorrey - 4/8/2006 2:36 PMPlease name some military aircraft that commonly use boron composites... with cites.
Dana - 4/8/2006 8:27 PMQuotemlorrey - 5/8/2006 11:36 AMPlease name some military aircraft that commonly use boron composites... with cites.Aircraft applique armor: http://www.ceradyne.com/Products/Armor_Aircraft.aspQuote: "The first major military production use of boron fiber was for the horizontal stabilizers on the Navy's F-14 Tomcat interceptor." 35+ years ago, man! http://www.centennialofflight.gov/essay/Evolution_of_Technology/composites/Tech40.htmThat also went way back to test rudder and horizontal stabilizer items on the F-4 Phantom and the A-4.Stephane.Stratosphere Models.Picturetrail.com/stratospheremodels
mlorrey - 8/8/2006 12:22 AMQuoteDana - 5/8/2006 7:27 PMQuotemlorrey - 5/8/2006 11:36 AMPlease name some military aircraft that commonly use boron composites... with cites.Aircraft applique armor: http://www.ceradyne.com/Products/Armor_Aircraft.aspQuote: "The first major military production use of boron fiber was for the horizontal stabilizers on the Navy's F-14 Tomcat interceptor." 35+ years ago, man! http://www.centennialofflight.gov/essay/Evolution_of_Technology/composites/Tech40.htmLink with diagram of F-14 horizontal stabilizer materials: http://www.anft.net/f-14/f14-detail-horizstab.htmThe F-15 (rudder skins- see http://www.csd.uwo.ca/~pettypi/elevon/baugher_us/f015.html ) and Shuttle Orbiter (see http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts_coord.html ) also use 'em. Also the F-16. (see http://www.tpub.com/content/aviation/14014/css/14014_343.htm ) Even with the Tomcat out of service, you can't get much more "common" in the western world than the F-15 and F-16. All of these vehicles were designed in the late 1960s/early 1970s and the use of boron in composite structures has proliferated since then, although other materials have eclipsed it in recent years. It's also used in composite structure repairs.http://www.specmaterials.com/applications.htmNow, how many of these were manufactured or maintained at Groom Lake? None.BTW: I worked on the F-15. The horizontal stabilizers weren't classified. There would be no reason to dispose of airframe materials on Groom Lake for this aircraft, nor, if boron composites of the same sort were used in a classified aircraft at Groom Lake, would they need to be disposed of there, because, as you say, their use is rather common in airframe structural materials, ergo there is no operational security or other reasons to classify the production and disposal of waste of that nature. Nor are those particular types of boron composites all that great at burning.
Of three test articles built only one was validated. The validated structural test article was a hot structure concept. The test article contained over 90% of the parts that would have gone into the flight article.