EF-111 Sparkvark airplane modelGeneral Dynamics EF 111 airplane model. Development of the EF 111A Raven ["Spark Varks"] began in January 1975 when the Air Force contracted with Grumman Aerospace to modify two F 111As to serve as electronic warfare platforms. The F 111s high speed, long range, substantial payload and reasonable cost made it the ideal candidate to protect allied tactical forces against enemy radar defenses. The EF 111A provided protection by using a jamming orbit

It had an internal bomb bay that was later modified to carry an extra fuel tank

single-slotted high-lift flaps extend from the inboard end of the ailerons to the sides of the fuselage

and with no crew armor or self-sealing tanks

They were 350 tons heavier and four feet longer

the C-47 served again as a transport

radar-equipped F-82s were used quite extensively by the Air Defense Command as replacements for the P-61-night fighter

Air Force space boosters owed much to the V-2 engine and the improvements that followed

while still retaining low takeoff and landing speed and higher rate of climb with the wings swept forward

Due to these problems

totaling 5

and has a crew of five

One airplane named "The Turtle" set a world piston-engine distance record in 1946