LEADER 01910oam  2200481I  450 
001 9910712850703321
005 20200130090657.0
035   $a(CKB)5470000002497676
035   $a(OCoLC)1105632597
035   $a(EXLCZ)995470000002497676
100   $a20190625d1920      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aDrag or negative traction of geared-down supporting propellers in the downward vertical glide of a helicopter /$fby A. Toussaint
210  1$a[Washington, D.C.] :$cNational Advisory Committee for Aeronautics,$d1920.
215   $a1 online resource (5 pages)
225 1 $aTechnical notes / National Advisory Committee for Aeronautics ;$vNo. 21
300   $a"September, 1920."
300   $a"Resume translated from the French by the Paris Office, N.A.C.A."
300   $a"Paper read by M. Toussaint, Engineer of the Aerotechnical Institute of the University of Paris, (St.-Cyr l'Ecole), before the Scientific Commission of the Aero Club of France, January 24th, 1920"--Page 1.
300   $aNo Federal Depository Library Program (FDLP) item number.
606   $aDrag (Aerodynamics)
606   $aRotors (Helicopters)
606   $aDrag (Aerodynamics)$2fast
606   $aRotors (Helicopters)$2fast
615  0$aDrag (Aerodynamics)
615  0$aRotors (Helicopters)
615  7$aDrag (Aerodynamics)
615  7$aRotors (Helicopters)
700   $aToussaint$b A.$0214588
712 02$aUnited States.$bNational Advisory Committee for Aeronautics,
801  0$bTRAAL
801  1$bTRAAL
801  2$bTRAAL
801  2$bOCLCO
801  2$bGPO
906   $aBOOK
912   $a9910712850703321
996   $aDrag or negative traction of geared-down supporting propellers in the downward vertical glide of a helicopter$93447298
997   $aUNINA