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In a similar vein, page 3-135[0] describes what to do when e.g. under missile fire ("the pilot is authorized to use the tactical limits listed...to exit the hos

In a similar vein, page 3-135[0] describes what to do when e.g. under missile fire ("the pilot is authorized to use the tactical limits listed...to exit the hostile area by the most expeditious means... Subsequent reentry into situations which rely on use of these limits is NOT authorized.") on the same page as the procedure for defogging the cockpit. [0] https://www.sr-71.org/blackbird/manual/3/3-135.php https://www.sr-71.org/blackbird/manual/3/3-135.php

kryogen1c 7y ago
Nuclear propulsion manuals for the U.S. navy have similar wordings. >By order of the commanding officer [actually a highranking person on carriers, compared to little ships where COs can be realtively junior and low ranking], this reactor limit may be ignored during tactical situations. Legend has it that every CO (3, i think i heard) to invoke "when tactical" exceptions have been fired in the following review. The only thing worse than crashing a billion dollar boat is damaging the publics trust in naval nuclear power : )
- cladari 7y ago
  I'm remembering back 40 years here. I worked in the engine room of a nuclear powered cruiser. We had a switch called something like "battle bypass" that would bypass all the auto scram functions. The military calls a shutdown scram while the commercial industry calls it trip. We had a captain rank captain and I believe all nuclear powered vessels had one.
  - ubermonkey 7y ago
    I love the qualifying phrase "captain rank captain." (And I understand why it's needed.)
  - aoki 7y ago
    “battle short”
- village-idiot 7y ago
  When’s the last time a large US navy vessel was in a situation where exceeding limits was justifiable due to tactical needs? I’d probably wager that WW2 was the last time.
alexis_fr 7y ago
To be fair, on the same page also there is the “taxi slowly if broken tank” failure mode, because it “can be ingested by an inlet”. For those who don’t have the picture in mind, the first DC-3’s fuel valve was next to the air inlet. One day the operator didn’t watch the refill (They didn’t have autostop valves at the time), the fuel overflowed into the inlet, which certainly mixed it studiously with the air and pulverized the whole into the cabin. Man, aviation was wild at its beginnings.

kryogen1c 7y ago

Nuclear propulsion manuals for the U.S. navy have similar wordings. >By order of the commanding officer [actually a highranking person on carriers, compared to little ships where COs can be realtively junior and low ranking], this reactor limit may be ignored during tactical situations. Legend has it that every CO (3, i think i heard) to invoke "when tactical" exceptions have been fired in the following review. The only thing worse than crashing a billion dollar boat is damaging the publics trust in naval nuclear power : )

cladari 7y ago
I'm remembering back 40 years here. I worked in the engine room of a nuclear powered cruiser. We had a switch called something like "battle bypass" that would bypass all the auto scram functions. The military calls a shutdown scram while the commercial industry calls it trip. We had a captain rank captain and I believe all nuclear powered vessels had one.
- ubermonkey 7y ago
  I love the qualifying phrase "captain rank captain." (And I understand why it's needed.)
- aoki 7y ago
  “battle short”
village-idiot 7y ago
When’s the last time a large US navy vessel was in a situation where exceeding limits was justifiable due to tactical needs? I’d probably wager that WW2 was the last time.

alexis_fr 7y ago

To be fair, on the same page also there is the “taxi slowly if broken tank” failure mode, because it “can be ingested by an inlet”. For those who don’t have the picture in mind, the first DC-3’s fuel valve was next to the air inlet. One day the operator didn’t watch the refill (They didn’t have autostop valves at the time), the fuel overflowed into the inlet, which certainly mixed it studiously with the air and pulverized the whole into the cabin. Man, aviation was wild at its beginnings.