Coincidently both the the E-2 Hawkeye and the Lunar Module were both products of the same aircraft producer: Grumman, an aerospace company that produced many carrierborne aircraft designs for the US Navy and not renowned for their lightweight airframes.Ripples appear along the fuselage of a US Navy (USN) E-2C Hawkeye aircraft assigned to the "Seahawks" of Carrier Airborne Early Warning Squadron 126 (VAW-126), due to the tremendous amount of torque and pressure exerted on the aircraft while landing on the flight deck of the US Nimitz Class Aircraft Carrier, USS HARRY S. TRUMAN (CVN 75) 11 January 2005.
The ripples only appear during the initial touchdown impact period, and disappear as soon as the fuselage is no longer stressed.
This is why carrier aircraft airframe life is listed in both landing cycles and flight hours - with landing cycles having priority.
So it was kind of ironic that Grumman would win the contract to design the LM for the Apollo program in the 1960s – there are very few "airframe" designs where the weights were calculated down to the last fraction of an ounce/milligram – perhaps the U-2 spyplane could compare?