Matches in SemOpenAlex for { <https://semopenalex.org/work/W4236697517> ?p ?o ?g. }
Showing items 1 to 64 of
64
with 100 items per page.
- W4236697517 endingPage "545" @default.
- W4236697517 startingPage "539" @default.
- W4236697517 abstract "Drag of external stores installed on a supersonic aircraft deteriorates the performance like maximum speed, acceleration, endurance. Droptanks, pods, wing pylons belong to such stores. The drag coefficients of these stores are essential to estimate the performances, however, comparably difficult to acquire in supersonic region. When supersonic wind tunnel is not available, the coefficients can be derived through flight tests.The proposed method depends on a comparison of supersonic acceleration flights between the clean and the externally installed configurations. The test aircraft is flown successively in that different configurations.For each acceleration, flying altitude, starting speed of 0.9 Mach and initial aircraft weight are kept equal. Also the maximum engine power setting of after-burner is kept same all through the accelerations. Each acceleration range from 0.9 to 2.0 Mach is divided commonly into a number of small speed class. At each class, flight Mach number, time and fuel quantity representing aircraft weight or mass are recorded by the pilot.For each class, based on equation of motion of the aircraft, the drag of the stores is calculated from the difference of the products between the two configurations, the product being the aircraft mass multiplied by the acceleration rate. Then the drag coefficient is derived as usual and plotted for the supersonic range.As an example, drag coefficient for a wing pylon was derived from flight tests as 0.04 to 0.02 for the supersonic range regarding to its side area, and compared with the coefficient from wave and friction drag theory. Due to unfavorable flight conditions and lack of experience, the dispersions of the derived coefficients from the theory were not small.By improving measuring technique and choosing flight condition carefully, this method may bring more accurate drag data and may be suitable when the flight test is feasible with other missions." @default.
- W4236697517 created "2022-05-12" @default.
- W4236697517 creator A5039497197 @default.
- W4236697517 date "1974-01-01" @default.
- W4236697517 modified "2023-10-14" @default.
- W4236697517 doi "https://doi.org/10.2322/jjsass1969.22.539" @default.
- W4236697517 hasPublicationYear "1974" @default.
- W4236697517 type Work @default.
- W4236697517 citedByCount "0" @default.
- W4236697517 crossrefType "journal-article" @default.
- W4236697517 hasAuthorship W4236697517A5039497197 @default.
- W4236697517 hasBestOaLocation W42366975171 @default.
- W4236697517 hasConcept C117896860 @default.
- W4236697517 hasConcept C120338312 @default.
- W4236697517 hasConcept C121332964 @default.
- W4236697517 hasConcept C127413603 @default.
- W4236697517 hasConcept C137589782 @default.
- W4236697517 hasConcept C146978453 @default.
- W4236697517 hasConcept C165231844 @default.
- W4236697517 hasConcept C178978397 @default.
- W4236697517 hasConcept C190895693 @default.
- W4236697517 hasConcept C195637266 @default.
- W4236697517 hasConcept C204323151 @default.
- W4236697517 hasConcept C205991772 @default.
- W4236697517 hasConcept C57879066 @default.
- W4236697517 hasConcept C72117827 @default.
- W4236697517 hasConcept C72921944 @default.
- W4236697517 hasConcept C74650414 @default.
- W4236697517 hasConceptScore W4236697517C117896860 @default.
- W4236697517 hasConceptScore W4236697517C120338312 @default.
- W4236697517 hasConceptScore W4236697517C121332964 @default.
- W4236697517 hasConceptScore W4236697517C127413603 @default.
- W4236697517 hasConceptScore W4236697517C137589782 @default.
- W4236697517 hasConceptScore W4236697517C146978453 @default.
- W4236697517 hasConceptScore W4236697517C165231844 @default.
- W4236697517 hasConceptScore W4236697517C178978397 @default.
- W4236697517 hasConceptScore W4236697517C190895693 @default.
- W4236697517 hasConceptScore W4236697517C195637266 @default.
- W4236697517 hasConceptScore W4236697517C204323151 @default.
- W4236697517 hasConceptScore W4236697517C205991772 @default.
- W4236697517 hasConceptScore W4236697517C57879066 @default.
- W4236697517 hasConceptScore W4236697517C72117827 @default.
- W4236697517 hasConceptScore W4236697517C72921944 @default.
- W4236697517 hasConceptScore W4236697517C74650414 @default.
- W4236697517 hasIssue "250" @default.
- W4236697517 hasLocation W42366975171 @default.
- W4236697517 hasOpenAccess W4236697517 @default.
- W4236697517 hasPrimaryLocation W42366975171 @default.
- W4236697517 hasRelatedWork W1549900211 @default.
- W4236697517 hasRelatedWork W1987334757 @default.
- W4236697517 hasRelatedWork W2379524014 @default.
- W4236697517 hasRelatedWork W2524282529 @default.
- W4236697517 hasRelatedWork W304526152 @default.
- W4236697517 hasRelatedWork W312477034 @default.
- W4236697517 hasRelatedWork W3183552631 @default.
- W4236697517 hasRelatedWork W580613041 @default.
- W4236697517 hasRelatedWork W94733296 @default.
- W4236697517 hasRelatedWork W1502794539 @default.
- W4236697517 hasVolume "22" @default.
- W4236697517 isParatext "false" @default.
- W4236697517 isRetracted "false" @default.
- W4236697517 workType "article" @default.