Development of a Small Aircraft Runway Length Analysis Tool (2022) / Chapter Skim
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46 5 RUNWAY DESIGN CASE STUDIES The scenarios described in this section represent possible real-world applications of the Small Aircraft Runway Length Analysis Tool (SARLAT)
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47 Table 8: Case Study #1 Fleet Mix. FAA Aircraft Identifier Aircraft Name Useful Load (%)
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48 Using the SARLAT, we perform a runway design analysis that produces runway length requirements for each aircraft, given the model inputs. The tool output depicts each aircraft graphically in the fleet mix and its corresponding runway length requirements (see Figure 32)
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49 Figure 32: Case Study #1 Runway Length Requirements. 5.2 CASE STUDY #2: CONSTRAINED RUNWAY An airport located high in the mountains of the American Southwest serves general aviation traffic for a small city community.
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50 Table 10: Case Study #2 Fleet Mix. FAA Aircraft Identifier Aircraft Name Aircraft Mix (%)
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51 Table 11: Case Study #2 Inputs. Scenario Inputs Values Pressure Altitude (Field Elevation)
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52 Figure 33: Case Study #2 Runway Evaluation.
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53 Figure 34: Case Study #2 Runway Evaluation at Lower Temperature. 5.3 CASE STUDY #3: RUNWAY EXTENSION A small private airport is planning to extend its only runway to accommodate aircraft more effectively.
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54 Table 12: Case Study #3 Fleet Mix. FAA Aircraft Identifier Aircraft Name Aircraft Mix (%)
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55 An evaluation of the existing runway length (3,600 feet) in SARLAT reveals that the Cessna 310 is currently limited at 57% useful load (Figure 35)
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56 Figure 36: Case Study #3 Runway Design. Figure 37: Case Study #3 Proposed Runway.
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57 5.4 CASE STUDY #4: PERMANENT RUNWAY SHORTENING (DUE TO OBSTRUCTIONS) A small airport in the northeastern United States has identified several obstructions that FAA has determined to be hazards to air navigation.
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58 Table 14: Case Study #4 Fleet Mix. FAA Aircraft Identifier Aircraft Name Aircraft Mix (%)
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59 When evaluating and comparing the results of the two analyses, the findings indicate that the reduction in runway length does have an impact on several of the aircraft operating at the airport. In addition to a general reduction in useful load for many of the aircraft evaluated, several are now unable to operate under certain environmental conditions.
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60 Figure 39: Case Study #4 Altered Runway Evaluation.
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61 Table 16: Case Study #5 Fleet Mix. FAA Aircraft Identifier Aircraft Name Aircraft Mix (%)
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62 C25B Cessna CitationJet 3 3 E55P Phenom 300 2 Table 17: Case Study #5 Inputs. Scenario Inputs Values Pressure Altitude (Field Elevation)
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63 Figure 40: Case Study #5 Existing Runway Evaluation.
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64 Figure 41: Case Study #5 Relocated Runway Evaluation.
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65 Figure 42: Case Study #5 Runway Length – Turbofan Aircraft Analysis.
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