Re: Clueless in Italy part II

On Fri, 25 Jan 2008 08:58:12 -0800 (PST), in a place far, far away,
behlingjo@xxxxxxxxx made the phosphor on my monitor glow in such a way
as to indicate that:


The Ares I SRB has range safety system that would split apart the
casing, shutting it down.
If Clueless would read more, he would have found out that the
Challenger SRB's were blown apart preventing them from reaching land
It is a requirement for all launch vehicles to have such a system and
without one, Ares I can not be flown from KSC

Not, it's not. AMROC's SET-1 vehicle didn't have one, and neither
does SpaceX Falcon 1. I don't think that Pegasus does, either. No
reusable piloted vehicle would have one. It is only a requirement on
a government range, and even there, it can be waived.

It is for KSC/CCAFS

It is, until it isn't. Elon will be attempting to get a similar
waiver there.

As for an RLV, it depends on the fuel load.

Not necessarily.

Re usability or manned
doesn't mean it automatically doesn't need one.

Of course it does. If the vehicle is designed to be so unreliable as
to need one, it would be foolish to make it either reusable, or
manned. Are you really saying that the RSO is going to destroy a
vehicle with a pilot on board? That's absurd. We might as well put
destruct devices in airliners, in that case, since they carry huge
amounts of fuel, and can fall in populated areas.

Unfortunately, Falcon 1 will probably required to have one for other
places than KWAJ since it demonstrated the need for one on its first
launch

No, it didn't necessarily. It never went out of control. It simply
fell down in the lagoon. Had it happened at the Cape, it wouldn't
have caused any damage, or at least not any that would have been
mitigated by destroying it.

The FAA will require such systems on non govt ranges.

Again, it depends. There is no blanket rule. All that has to be
proven is that it meets Ec requirements. If that can be done without
a vehicle destruct device, AST will grant a license. It's not the
sixties any more.

Waivers will be a rare event.

Waivers will not necessarily be required on non-government ranges,
since range rules don't even currently exist for them.
.

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