Convair B-36 Peacemaker parasite aircraft projects
At a time when it looked as if England would fall like the rest of Europe to Nazi Germany, the USAAF began developing the B-36 with the idea of transatlantic bombing missions in mind. In order to protect the bombers on such long range missions the parasite aircraft concept was used. The idea was that a handful of bombers within each bombing group would deploy small, air launched fighter aircraft from the bomb bays for the purpose of defending the bombers.
XF-85 Goblin (Photos 1 and 2)
Designed by McDonnell, the Goblin was tested with a B-29 Superfortress. A trapeze would extend from the bomb bay, where the Goblin would detach from, carry out its mission, and return and hook back onto the trapeze.
Project FICON (Photos 3 and 4)
FICON used Republic RF-84 Thunderflash fighters. Several ideas were tested such as a version carried in the belly of a B-36 as well as attaching two fighters to the wingtips of a bomber.
All projects were eventually cancelled due to their high risk and the introduction of air to air refueling.