?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=THE+INFLUENCE+OF+INSTALING+SECONDARY+CABIN+ROOF+TO+AERODYNAMICS+AND+FLUID+MOTION+BEHAVIOR+ON+SEDANS+%0D%0A%0D%0APENGARUH+PENAMBAHAN+ATAP+SEKUNDER+KABIN+MOBIL+(SECONDARY+CABIN+ROOF)+TERHADAP+GAYA+AERODINAMIS+DAN+PERILAKU+ARAH+PADA+MOBIL+SEDAN%0D%0A%0D%0A&rft.creator=ANDY+ABDEL+HAKIM%2C+0515021019&rft.subject=+&rft.subject=Karya+Karya+Umum+%3D+000&rft.subject=Knowledge%2FIlmu+Pengetahuan&rft.description=The+aim+of+this+research+is+to+find+the+effect+from+instaling+secondary+cabin+roof+(SCR)+to+vehicle.+It+will+be+done+by+test+a+model+to+wind+tunnel.+The+expectation+from+this+research%2C+it+can+be+applied+to+real+vehicles.+SCR+is+a+vehicle+accessory+installed+on+vehicle+roof+useful+to+block+heats+from+sun+while+the+car+parking.%0D%0A%0D%0AThis+test+has+been+done+in+LIWET+wind+tunnel+at+UPT+-+LAGG+%E2%80%93+BPPT%2C+Serpong+and+has+opened+circuit.+The+base+material+of+model+test+is+wood+with+1+%3A+4%2C5+scale+adopt+from+BMW+M3+E92+Coupe+which+has+0%2C629+m2+drag+area+with+0%2C34+cl+and+0%2C32+cd.+The+SCR+model+has+been+made+from+aluminium+and+has+two+kinds+of+type%2C+which+are+A+and+B.+Variation+of+velocity+and+height+of+SCR+from+roof+is+applied+to+test+methods%2C+which+are+15+m%2Fs+and+20+m%2Fs+for+velocity+then+1%2C5+cm+and+2%2C5+cm+for+height+of+SCR+from+roof.+Before+the+test+start%2C+the+first+things+that+must+be+done+is+preparation+the+tools+for+test%2C+there+are+load+cell+(lc)+signal+check+in+balance+which+uses+set+of+computer%2C+SCXI%2C+and+terminal+block.+Next+step+is+calibration+of+external+balance+in+wind+tunnel+that+has+5+lc+as+force+meter%2C+the+purpose+of+this+step+is+to+obtain+matrix+of+calibration+then+the+inverse+of+this+matrix+is+matrix+of+test.+Next%2C+matrix+of+test+will+be+used+as+a+multiply+factor+to+voltage+measurement+from+result+test+of+external+balance+while+test+start.+Output+from+this+multiply+is+aerodynamic+forces+experienced+by+model+test.%0D%0A%0D%0AInstalling+SCR+made+some+change+to+aerodynamic+experienced+by+vehicle.+From+data+of+test%2C+it+can+be+obtained+that+installing+SCR+type+B+with+height+1%2C5+cm+from+roof%2C+the+smallest+coefficient+of+lift+(cl)+for+each+variation+of+velocity+are+0%2C3+for+15+m%2Fs+and+0%2C29+for+20+m%2Fs.+Meanwhile%2C++installing+SCR+type+A+with+height+2%2C5+cm+from+roof%2C+the+smallest+coefficient+of+drag+(cd)+for+each+variation+of+velocity+are+0%2C368+for+15+m%2Fs+and+0%2C355+for+20+m%2Fs.+This+results+are+valid+if+only+the+flow+regime+of+two+corresponding+fluid+are+same+and+with+the+same+model+too.%0D%0A%0D%0A%0D%0APenelitian+ini+dilakukan+untuk+mengetahui+efek+dari+pemasangan+atap+sekunder+kabin+mobil+(SCR)+pada+kendaraan+dengan+cara+pengujian+pada+terowongan+angin+menggunakan+model.+Tujuan+akhir+penelitian+ini+agar+SCR+dapat+diaplikasikan+pada+kendaraan+sehari-hari.+SCR+merupakan+aksesori+kendaraan+yang+dipasang+pada+atap+kendaraan+dan+berfungsi+sebagai+penghalang+panas+pada+saat+kendaraan+terpapar+sinar+matahari+ketika+kendaraan+parkir.%0D%0A%0D%0APengujian+dilakukan+pada+terowongan+angin+LIWET+milik+UPT+%E2%80%93+LAGG+%E2%80%93+BPPT%2C+Serpong+dengan+sirkuit+tipe+terbuka.+Model+uji+berbahan+dasar+kayu+dengan+skala+1+%3A+4%2C5+dengan+tipe+BMW+M3+E92+Coupe+yang+memiliki+0%2C629+m2+drag+area+dengan+0%2C34+cl+dan+0%2C32+cd.+Model+SCR+berbahan+dasar+aluminium+dan+terdiri+dari+dua+jenis%2C+yaitu+tipe+A+dan+tipe+B.+Pengujian+dilakukan+dengan+variasi+kecepatan+yakni+15+m%2Fs+dan+20+m%2Fs+dan+variasi+tinggi+pemasangan+SCR+dari+atap+sebesar+1%2C5+cm+dan+2%2C5+cm.+Sebelum+dilakukan+pengujian%2C+hal+pertama+yang+dilakukan+adalah+persiapan+peralatan+pengujian+meliputi+cek+sinyal+load+cell+(lc)+pada+timbangan+menggunakan+seperangkat+komputer%2C+SCXI%2C+dan+terminal+block.+Selanjutnya+adalah+mengkalibrasi+timbangan+luar+pada+terowongan+angin+yang+terdiri+dari+5+buah+lc+sebagai+alat+ukur+gaya%2C+untuk+mendapatkan+matriks+kalibrasi+yang+selanjutnya+akan+diinverskan+menjadi+matriks+pengujian.+Matriks+pengujian+selanjutnya+digunakan+sebagai+faktor+pengali+dari+voltase+terukur+hasil+pembacaan+timbangan+luar+pada+saat+pengujian.+Hasil+perkalian+ini+merupakan+gaya+aerodinamis+yang+diterima+model+uji.%0D%0A%0D%0APenambahan+SCR+ternyata+menyebabkan+perubahan+gaya+aerodinamis+yang+diterima+kendaraan.+Berdasarkan+data+pengujian%2C+didapatkan+koefisien+gaya+angkat+(cl)+terkecil+sebesar+0%2C3+dengan+kecepatan+15+m%2Fs+dan+0%2C29+dengan+kecepatan+20+m%2Fs+pada+pemasangan+SCR+tipe++B+dan+tinggi+pemasangan+sebesar+1%2C5+cm+dari+atap+kendaraan.+Sementara+itu+koefisien+gaya+hambat+(cd)+terkecil+sebesar+0%2C368+dengan+kecepatan+15+m%2Fs+dan+0%2C355+dengan+kecepatan+20+m%2Fs+pada+pemasangan+SCR+tipe+A+dan+tinggi+pemasangan+sebesar+2%2C5+cm+dari+atap+kendaraan.+Hasil+pengujian+ini+berlaku+untuk+rezim+aliran+yang+sama+saat+pengujian+dan+dengan+jenis+model+yang+sama+juga.%0D%0A&rft.publisher=Fakultas+Teknik&rft.date=2013-02-05&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%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