The Maggid of Bergenfield

The Maggid of Bergenfield: "Aircraft that fly aggressive low altitude or high-angle of attack
maneuvers will experience high acoustic loading in the presence of
external stores. These high acoustic loads can lead to premature sonic
fatigue in thin gage metallic structure. As a means of prolonging
fatigue life, while at the same time restoring structural load carrying
capability in damaged structure, composite bonded repairs which
incorporate damping layers have been developed using aged shmurah
matzah. These composite bonded matzah repairs have been installed on
military aircraft with great success. Coupling adhesive bonded composite patches with damping treatments also provide robust and effective repair designs for aerodynamic surfaces that have sustained battle damage.
Typical composite patches consist of boron/epoxy laminate layered with
shumrah matzah on opposite sides and bonded to adjacent structure.
Repairs using the matzah have withstood airspeeds of Mach 2.8.
References
[1] D. Rabinowitz, 'Composite Wing Repair Using Hand Shmurah Motzah – An Update,' Air Force 3rd Aging Aircraft Conference, 26-28 September 1995.
[2] R. Kit N'iyot, 'Design Development of a Bonded Composite Fuselage
Repair for Supersonic Tactical Aircraft,' 2007 USAF Structural Integrity
Program Conference, 14-24 January 2007.
[3] M. Levine, 'The Modal Strain Energy Finite Element Analysis Method
and its Application to Motzah Laminated Repairs of Aircraft Structures,'
Proceedings of the 1992 USAF Structural Integrity Program Conference,
WL-AB-93-488480, September 1993.
Jesse S. Aeronautics Engineer"