"If you really have the need for speed, you could get it on the ground. But if you're looking more for stuff
that can break the sound barrier many
times over, you should consider looking
up," writes Gene Casaun.
Lockheed Martin's skunk works department
has been making noises about a revival
of the legendary SR-71. A jet that was capable of flying up to
mach 3. That's slightly more than 3,700 miles
per hour. About one and a half times
speedier than the 0.220 swift, reportedly
the fastest bullet ever produced.
But the skunk works brain trust claims
the SR-72 might even double the speed of
its predecessor. That's a tricky proposition considering
the plane's air intake would be brutal
at those speeds. Like trying to start a
campfire in gale force winds, he
continued.
Could even faster speeds be achieved? as
explained by author james c goodall, for
aviation geek club. the contract provides
for a parametric design study to
establish the viability of a Turbine Based Combined Cycle (TBCC) propulsion
system consisting of several
combinations of near-term turbine engine
solutions integrated with a very low
mock ignition Dual Mode Ramjet (DRMJ) in the senior 72 vehicle
concept.
The SR-72 is envisioned as an
unmanned, reusable hypersonic isr and
strike aircraft capable of mach 6 flight
or nearly double the speed of its
predecessor.
The SR-71 Blackbird, Nasa is
funding the validation of a previous
lockheed study that found that speeds up
to mach 7 could be achieved with a dual
mode engine that combines turbine and
ramjet technologies. Kasawin added that it would require
turbojet engines hot enough to reach a
fuel ignition point. that means a ton of turbid jet blades to
heat and compress all that air rushing
in.
In short it wouldn't require so much as
a turbojet engine but a scramjet a
verbal mashup that means supersonic
combustion ramjet. If this mine bending speed is eventually
achieved the jet could theoretically
depart from a base located in the
continental united states to hit targets
across the pacific or atlantic oceans in
approximately 90 minutes.
The roadmap envisions a follow-on
program calling for a reusable unmanned
aircraft with mach 6 speeds. At that speed intelligence can be
gathered or weapons delivered before
enemy air defenses are even alerted. Aviation geek club writes, the SR-72 will boast a similar size and
range as the SR-71 and will likely
engage in the same missions.
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