Meteorological Support for Space Operations Review and Recommendations (1988) / Chapter Skim
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Appendix D: Proposed Weather Factors Governing Launch Commit Criteria and Flight Rules
Appendix D: Proposed Weather Factors Governing Launch Commit Criteria and Flight Rules
Pages 62-77
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From page 62... ...
Appendix D Proposed Weather Factors Governing Launch Commit Criteria and Flight Rules 62
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From page 63... ...
ICE ACCUMULATES IN ZERO-ICE OR RESTRICTED THICKNESS AREAS ON THE ET. Rationale: Thermal Tile Protection LCC RULE: SURFACE WIND LIMITS FOR LIFT-OFF (MEASURED AT 60' LEVEL)
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From page 69... ...
This requirement exists because current forecasting capability cannot accurately ensure that a NO-GO condition to one of the backup runways would not result in a NO -GO condition at the prime runway by landing time. Surface wind limits are not required to be met at the backup runways, since the backup runway would only be required if an energy problem occurred dictating a runway redesignation.
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From page 70... ...
Specific weather criteria are provided for decisions involving abort gap closure or main engine limits management during ascent phase. As documented in Rule 5-TBD and its rationale, in some case following SSME failure, main engine limits will be enabled at the earliest single-engin~ capability to reach a prime TAL or augmented contingency landing site (ACLS)
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From page 72... ...
. _ LANDING SITE WEATHER CRITERIA - Continued Gusts, peak winds above the steady state or average wind, are limited to 8 KT.
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From page 73... ...
ADDITIONALLY, DETACHED OPAQUE THUNDERSTORM ANVILS MUST NOT BE WITHIN 10 NM OF THE LANDING SITE, NOR WITHIN 5 NM OF THE APPROACH PATH OUT TO A RANGE OF 30 NM. Detached opaque thunderstorm anvils haste the potential for triggered lightning and precipitation should the anc'`l be penetrated.
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From page 74... ...
were selected to reduce impact on energy management resulting from runway redesignation and maneuvers and at the same time ensure a reasonably low risk of a natural or triggered lightning strike. Prohibition of penetrating cumulonimbus, cumulus congestus, and opaque anvils is because of concern for triggered lightning and/or rain.
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From page 75... ...
This evaluation ofthe light attenuation will primarily depend on the weather reconnaissance aircraft acceptability observations. If, however, an aircraft is unavailable, then visibility will be constrained by ground observations following the daylight visibility limits.
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From page 76... ...
Reference Entry FTP 42. Rules 1-35RandJ,LANDINGSITES;2-lF.1 and3,LANDING SITE WEATHER CRITERIA; 2-31A and D, EXTENSION DAY REQUIREMENTS; 2-81A, EXTENSIONDAYGUIDELINES;341A,LANDINGSITEWEATHERCRITERIA; 4-2, LANDING SITE CONDITIONS; 4-26, PERFORMANCE BOUNDARIES; 4-62B, LANDING SITE SELECTION PRIORITIES; 4-65, DEORBIT PRIORITY FOR EOM WEATHER; 5-27, LIMIT SHUTDOWN CONTROL; and 8-60, GNC5GOINO-GO CRITERIA, reference this rule.
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From page 77... ...
Weather criteria will be relaxed real time should both the primary and secondary landing sites be unacceptable. Rule2-200, CONTINGENCYACTIONSUMMARY, references this rule.
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