Two versions of dorsal conformal tanks were studied, one without speed requirements and one with supersonic capability. The low speed version, shown in Figure 5, has roughly double the fuel capability of the supersonic
version. Wave drag was the limiting factor for size in the supersonic alternative; directional stability and pitch
moment were problems which both alternatives shared.
However, it turned out that the version with the larger tank was just as capable of reaching supersonic speed as
the specially designed alternative. The greatest benefit from this proposal, apart from increased weapon load
capability if drop tanks are not needed, is its inherent potential for low supersonic drag increase, assuming the cross
section area distribution is properly designed to minimize the wave drag increment.