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.finflash{width:46px;height:46px} #mfam .rondel.wide{width:88px;height:33px} #mfam .finflash.tall{width:38px;height:46px} #mfam .mark .mk{font-size:10.5px;letter-spacing:1.7px;text-transform:uppercase;color:rgba(255,255,255,.55);line-height:1.5;font-family:'Gilroy semiBold',Helvetica,sans-serif} #mfam .mark .mk b{display:block;color:#fff;letter-spacing:.2px;text-transform:none;font-size:14.5px;margin-top:2px} #mfam .statstrip .stat{border-top:3px solid var(--blue)} #mfam .statstrip .stat:first-child{border-top-color:var(--red)} #mfam table.oobt.fleet td:first-child{padding:10px 6px 10px 14px;vertical-align:top} #mfam .tthumb{display:block;width:150px;height:100px;background:#eef1f6 center\/cover no-repeat;border:1px solid var(--line)} #mfam table.oobt.fleet{table-layout:fixed;min-width:1072px} #mfam table.oobt.fleet col.c-th{width:172px} #mfam table.oobt.fleet col.c-type{width:198px} #mfam table.oobt.fleet col.c-role{width:150px} #mfam table.oobt.fleet col.c-num{width:78px} #mfam table.oobt.fleet col.c-yr{width:64px} #mfam table.oobt.fleet col.c-units{width:154px} #mfam table.oobt.fleet col.c-srv{width:104px} #mfam table.oobt.fleet col.c-rep{width:150px} #mfam table.oobt.fleet col.c-fd{width:118px} #mfam table.oobt.fleet th{white-space:normal} #mfam table.oobt.fleet.ord{min-width:900px} #mfam .ndet{display:inline} #mfam .ndet summary{display:inline;cursor:pointer;color:var(--link);font-family:'Gilroy semiBold',Helvetica,sans-serif;letter-spacing:.4px;list-style:none} #mfam .ndet summary::-webkit-details-marker{display:none} #mfam .ndet summary::after{content:' \\203A'} #mfam .ndet[open] summary{display:none} #mfam table.oobt.fleet td:last-child{color:var(--txt2)} #mfam table.oobt.former .tthumb{filter:saturate(.55)} #mfam table.oobt.former tr:hover .tthumb{filter:none} #mfam table.oobt.fleet td:last-child{overflow-wrap:anywhere} #mfam table.oobt.fleet td:last-child{font-size:12.5px;line-height:1.5;color:var(--txt3)} #mfam .de{color:var(--txt3);font-size:12.5px;font-family:'Gilroy regular',Helvetica,Arial,sans-serif;letter-spacing:0;text-transform:none} #mfam .orgcard .de{margin:-3px 0 8px} #mfam .oob dt .de,#mfam table.oobt .de{white-space:nowrap} #mfam .qbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:22px 0 0} #mfam .qin{flex:1 1 280px;max-width:460px;padding:11px 13px;font:400 15px\/1.4 'Gilroy regular',Helvetica,Arial,sans-serif;color:#0d1117;background:#fff;border:1px solid #d3d8e0;border-radius:0;outline:0;-webkit-appearance:none;appearance:none} #mfam .qin:focus{border-color:var(--blue)} #mfam .qin::-webkit-search-cancel-button{display:none} #mfam .qcnt{font-size:12.5px;letter-spacing:.4px;color:var(--txt3);font-family:'Gilroy semiBold',Helvetica,sans-serif} #mfam .qbtn{padding:10px 13px;font-size:10.5px;letter-spacing:1.1px;text-transform:uppercase;font-family:'Gilroy semiBold',Helvetica,sans-serif;background:#fff;color:var(--txt2);border:1px solid #d3d8e0;border-radius:0;cursor:pointer;line-height:1.4} #mfam .qbtn:hover{border-color:var(--blue);color:var(--blue-ink)} #mfam .qhide{display:none!important} #mfam .qnone{display:none;padding:20px 2px;color:var(--txt2);font-size:15px} #mfam .qnone.on{display:block} #mfam .oob>div{cursor:pointer;user-select:none;align-items:center} #mfam .oob>div:focus-visible{outline:2px solid var(--blue);outline-offset:-2px} #mfam .oob>div>i{position:relative;flex:none;width:13px;height:13px;margin-left:auto;opacity:.75} #mfam .oob>div>i::before,#mfam .oob>div>i::after{content:'';position:absolute;background:#fff;left:0;top:6px;width:13px;height:1.5px} #mfam .oob>div>i::after{transform:rotate(90deg)} #mfam .oob.open>div>i::after{transform:rotate(0)} #mfam .oobwrap.coll .oob>dl{display:none} #mfam .oobwrap.coll .oob.open>dl{display:grid} #mfam table.oobt.cbt td{vertical-align:top} #mfam table.oobt.cbt tr.crow td{border-bottom:0} #mfam table.oobt.cbt tr.cdet>td{border-bottom:1px solid var(--line);padding:0 16px 20px;color:var(--txt2)} #mfam tr.cdet{display:none} #mfam tr.cdet.on{display:table-row} #mfam .cwho{display:block;font-size:12.5px;color:var(--txt3);line-height:1.45;margin-top:3px} #mfam .cserv{display:block;font-size:12.5px;color:var(--txt3);line-height:1.45;margin-top:3px} #mfam .cbx{padding:6px 11px;font-size:10.5px;letter-spacing:1.1px;text-transform:uppercase;font-family:'Gilroy semiBold',Helvetica,sans-serif;background:#fff;color:var(--blue-ink);border:1px solid var(--blue);border-radius:0;cursor:pointer;line-height:1.4;white-space:nowrap} #mfam .cbx:hover{background:var(--blue);color:#fff} #mfam .cdin{display:grid;grid-template-columns:1.6fr 1fr;gap:26px;padding-top:2px;max-width:none} #mfam .cdin p{font-size:16.5px;color:var(--txt2);margin:0 0 11px;max-width:66ch} #mfam .cdin p.crole{color:#0d1117} #mfam .cdl{margin:0} #mfam .cdl dt{font-size:10.5px;letter-spacing:1.6px;text-transform:uppercase;color:var(--txt3);font-family:'Gilroy semiBold',Helvetica,sans-serif;margin-top:12px} #mfam .cdl dt:first-child{margin-top:0} #mfam .cdl dd{margin:3px 0 0;font-size:14.5px;color:#0d1117;line-height:1.55} #mfam .cdl dd a{color:#0d1117;border-bottom:1px solid #c3cddb} #mfam .cdl dd a:hover{color:var(--blue-ink);border-bottom-color:var(--blue)} #mfam .ccav{display:block;font-size:13px;color:var(--txt3);line-height:1.55;margin-top:12px;padding-left:11px;border-left:2px solid var(--line);max-width:64ch} #mfam .clink{display:inline-block;margin:0 14px 0 0;font-size:13.5px} #mfam .cwar{font-size:11px;letter-spacing:1.3px;text-transform:uppercase;color:var(--txt3);font-family:'Gilroy semiBold',Helvetica,sans-serif} #mfam .statstrip.dark{margin:22px 0 4px} #mfam ul.gl.cml{margin-top:18px!important} #mfam ul.gl.cml li{line-height:1.6} #mfam ul.gl.cml li b{color:#0d1117;font-weight:400;font-family:'Gilroy semiBold',Helvetica,sans-serif} #mfam .cbig{display:inline-block;margin-top:22px;padding:13px 22px;background:var(--blue);color:#fff!important;border:1px solid var(--blue);border-radius:0;font-family:'Gilroy semiBold',Helvetica,sans-serif;font-size:11.5px;letter-spacing:1.6px;text-transform:uppercase;text-decoration:none} #mfam .cbig:hover{background:var(--blue-ink);border-color:var(--blue-ink)} #mfam .badge{height:66px;width:auto;display:block;flex:none;filter:drop-shadow(0 2px 9px rgba(0,0,0,.5))} #mfam .badge.big{height:112px} #mfam .mjc{height:96px;width:auto;display:block;flex:none;filter:drop-shadow(0 2px 9px rgba(0,0,0,.5))} #mfam .mcol{display:flex;flex-direction:column;gap:18px} #mfam .tthumb.none{background:repeating-linear-gradient(45deg,#f3f6fa,#f3f6fa 6px,#e9eef5 6px,#e9eef5 12px)} #mfam .cflag{display:inline-block;width:16px;height:16px;vertical-align:-3px;margin-right:7px;background-repeat:no-repeat;background-size:200px 20px} #mfam .nflag{display:inline-block;width:18px;height:12px;vertical-align:1px;margin-left:8px;background-repeat:no-repeat;background-size:242px 16px} #mfam .st{display:table;font-size:10px;letter-spacing:1.3px;text-transform:uppercase;padding:2px 7px;margin:8px 0 0;font-family:'Gilroy semiBold',Helvetica,sans-serif;border:1px solid currentColor;white-space:nowrap} #mfam .st.on{color:var(--green)} #mfam .st.out{color:var(--amber)} #mfam .st.ord{color:var(--blue-ink)} #mfam .flybtn{display:table;margin:8px 0 0;padding:4px 10px;font-size:10.5px;line-height:1.45;letter-spacing:1.2px;text-transform:uppercase;font-family:'Gilroy semiBold',Helvetica,sans-serif;color:#fff!important;background:var(--blue);border:1px solid var(--blue);white-space:nowrap;max-width:100%} #mfam .flybtn:hover{background:var(--blue-ink);border-color:var(--blue-ink)} #mfam .flybtn.ghost{background:transparent;border:1px solid var(--blue);color:var(--blue-ink)!important;letter-spacing:.9px;white-space:normal;max-width:11em} #mfam table.oobt.former td .flybtn.ghost{color:var(--blue-ink)!important} #mfam .flybtn .via{opacity:.72;letter-spacing:.8px} #mfam table.oobt td a.flybtn{border-bottom:0} #mfam table.oobt.former td a.flybtn{color:#fff!important} #mfam #structure,#mfam #former,#mfam #oob,#mfam #faq{background:var(--bg2)} #mfam .ngrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px} #mfam .ncard{display:block;background:#fff;border:1px solid var(--line);overflow:hidden;text-decoration:none} #mfam .ncard:hover{border-color:var(--blue)} #mfam .ncim{display:block;height:158px;background:#eef1f6 center\/cover no-repeat} #mfam .ncim.none{background:repeating-linear-gradient(45deg,#f3f6fa,#f3f6fa 8px,#e9eef5 8px,#e9eef5 16px)} #mfam .ncbody{display:block;padding:16px 18px 20px} #mfam .ncbody time{display:block;font-family:'Gilroy semiBold',Helvetica,sans-serif;font-size:11px;letter-spacing:1.6px;text-transform:uppercase;color:var(--txt3)} #mfam .nct{display:block;font-family:'Gilroy semiBold',Helvetica,sans-serif;font-size:17px;line-height:1.32;color:#0d1117;margin:9px 0 8px} #mfam .ncard:hover .nct{color:var(--link)} #mfam .ncx{display:block;font-size:14px;line-height:1.55;color:var(--txt2)} #mfam .ncgo{display:block;font-family:'Gilroy semiBold',Helvetica,sans-serif;font-size:12px;letter-spacing:1.4px;text-transform:uppercase;color:var(--link);margin-top:14px} #mfam .nmore{display:inline-block;margin-top:26px;font-family:'Gilroy semiBold',Helvetica,sans-serif;font-size:12px;letter-spacing:1.6px;text-transform:uppercase;color:var(--link)} @media(max-width:960px){#mfam .ngrid{grid-template-columns:1fr 1fr}} @media(max-width:620px){#mfam .ngrid{grid-template-columns:1fr}} #mfam #gallery{background:#0d1117} #mfam #gallery h2{color:#fff} #mfam #gallery .spx-lede{color:#9aa3b8} #mfam #gallery .kicker{color:var(--blue)} #mfam #gallery .acard{background:#161b24;border-color:#242c38} #mfam #gallery .acard .tx b{color:#fff} #mfam #gallery .acard .im{background-color:#242c38} #mfam #gallery .acard .im.none{background:repeating-linear-gradient(45deg,#1b212b,#1b212b 8px,#232a35 8px,#232a35 16px)} #mfam .org{margin-top:34px} #mfam .cmdcard{display:flex;align-items:center;gap:26px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--red);padding:22px 26px} #mfam .cface{display:block;flex:none;width:128px;height:128px;background:#eef1f6 center\/cover no-repeat;border:1px solid var(--line)} #mfam .cface.mono{display:flex;align-items:center;justify-content:center;background:var(--blue-dim);color:var(--blue-ink);font-family:'Gilroy semiBold',Helvetica,sans-serif;font-size:44px;letter-spacing:1px;border-color:var(--blue)} #mfam .cmdtx{flex:1 1 auto;min-width:0;text-align:left} #mfam .crank{display:block;font-size:10.5px;letter-spacing:1.8px;text-transform:uppercase;color:var(--blue-ink);font-family:'Gilroy semiBold',Helvetica,sans-serif} #mfam .cmdtx b{display:block;font-size:21px;color:#0d1117;margin:3px 0 4px;font-family:'Gilroy semiBold',Helvetica,sans-serif} #mfam .cmeta{display:block;font-size:13px;color:var(--txt3)} #mfam .cmdorg{flex:none;text-align:left;padding-left:22px;border-left:1px solid var(--line)} #mfam .cmdorg span{display:block;font-size:13.5px;color:#0d1117;font-family:'Gilroy semiBold',Helvetica,sans-serif} #mfam .cmdorg em{display:block;font-style:normal;font-size:12.5px;color:#8b94a5;margin-top:3px} #mfam .oloc{font-size:12px;letter-spacing:1.3px;text-transform:uppercase;color:var(--blue-ink);font-family:'Gilroy semiBold',Helvetica,sans-serif;margin:0 0 9px} #mfam .orgcard,#mfam .orgcard h4,#mfam .orgcard p,#mfam .orgcard .de{text-align:left} #mfam .orgrow{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px} #mfam .orgcard{background:#fff;border:1px solid var(--line);border-top:3px solid var(--blue);padding:20px 22px} #mfam .orgcard.wide{grid-column:1\/-1} #mfam .orgcard h4{margin:0 0 7px;font-size:16.5px;color:#0d1117} #mfam .orgcard p{font-size:14px;color:var(--txt2);max-width:none} #mfam .orgcard .tag{display:inline-block;font-size:10px;letter-spacing:1.4px;text-transform:uppercase;color:var(--blue-ink);border:1px solid var(--blue);padding:2px 8px;margin-bottom:11px;font-family:'Gilroy semiBold',Helvetica,sans-serif} #mfam .orgcard.new{border-top-color:var(--red)} #mfam .orgcard.new .tag{color:var(--red);border-color:var(--red)} #mfam .tfgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:18px} #mfam .tfcol{border-top:1px solid var(--line);padding-top:14px} #mfam .tfcol h4{margin:0 0 3px;font-size:15px;color:#0d1117} #mfam .tfn{font-size:12px;letter-spacing:1.3px;text-transform:uppercase;color:var(--blue-ink);font-family:'Gilroy semiBold',Helvetica,sans-serif;margin-bottom:8px} #mfam .tfcol p{font-size:13.5px;color:var(--txt2);margin:0} #mfam .tfmore{display:inline-block;margin-top:12px;font-size:12px;letter-spacing:1.3px;text-transform:uppercase;color:var(--blue-ink);font-family:'Gilroy semiBold',Helvetica,sans-serif;border-bottom:1px solid var(--blue)} #mfam .tfmore:hover{color:#0d1117;border-bottom-color:#0d1117} #mfam .ucol{margin-top:12px} #mfam .ucol summary{list-style:none;cursor:pointer;font-size:12px;letter-spacing:1.3px;text-transform:uppercase;color:var(--blue-ink);font-family:'Gilroy semiBold',Helvetica,sans-serif;padding:7px 0} #mfam .ucol summary::-webkit-details-marker{display:none} #mfam .ucol summary::after{content:' +';font-family:inherit} #mfam .ucol[open] summary::after{content:' \\2013'} #mfam .ucol summary:hover{color:#0d1117} #mfam a.unit{text-decoration:none} #mfam a.unit:hover{border-color:var(--blue);color:var(--blue-ink);background:var(--blue-dim)} #mfam table.oobt tr.flash td{background:var(--blue-dim);transition:background .45s} @media(max-width:900px){#mfam .tfgrid{grid-template-columns:1fr}} #mfam .units{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px} #mfam .unit{font-size:12.5px;padding:5px 11px;background:var(--bg2);border:1px solid var(--line);color:var(--txt2);font-family:'Gilroy semiBold',Helvetica,sans-serif} #mfam .acgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px} #mfam .acard{display:block;background:#fff;border:1px solid var(--line);overflow:hidden} #mfam .acard:hover{border-color:var(--blue)} #mfam .acard .im{display:block;height:132px;background:#eef1f6 center\/cover no-repeat} #mfam .acard .im.none{background:repeating-linear-gradient(45deg,#f3f6fa,#f3f6fa 8px,#e9eef5 8px,#e9eef5 16px)} #mfam .acard .tx{display:block;padding:14px 16px} #mfam .acard .tx b{display:block;font-size:15px;color:#0d1117;line-height:1.3} #mfam .acard .tx em{display:block;font-style:normal;font-size:12px;color:var(--txt3);margin-top:5px;font-variant-numeric:tabular-nums} #mfam .acard:hover .tx b{color:var(--blue-ink)} @media(max-width:1000px){#mfam .acgrid{grid-template-columns:repeat(3,1fr)}#mfam .orgrow{grid-template-columns:1fr 1fr}} @media(max-width:820px){#mfam .tthumb{width:118px;height:79px}#mfam .badge.big{height:84px}#mfam .mjc{height:74px}#mfam .mcol{gap:14px}#mfam .acgrid{grid-template-columns:1fr 1fr}#mfam .orgrow{grid-template-columns:1fr}#mfam .marks{gap:20px}#mfam .photocred{position:static;display:block;padding:0 24px 12px;text-align:left;max-width:none}} @media(max-width:820px){#mfam .cmdcard{flex-wrap:wrap;gap:14px}#mfam .cmdorg{padding-left:0;border-left:0;flex-basis:100%}#mfam .specgrid,#mfam .specgrid.three{grid-template-columns:1fr}#mfam .cols{grid-template-columns:1fr}#mfam .relgrid{grid-template-columns:1fr}#mfam .statstrip{grid-template-columns:1fr 1fr}#mfam .oob dl{grid-template-columns:1fr}#mfam .cdin{grid-template-columns:1fr;gap:18px}#mfam .oob dd{text-align:left}#mfam .frow{grid-template-columns:110px 1fr 56px;gap:10px}#mfam .srclist{columns:1}#mfam .oobmap{height:440px}#mfam .oobmap.home{height:400px}} #mfam .pqband{background:#0d1117;padding:56px 0} #mfam .pqband .wrap{max-width:1120px} #mfam 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.satlbx{position:absolute;top:18px;right:22px;color:rgba(255,255,255,.72);font-family:'Gilroy semiBold',Helvetica,sans-serif;font-size:10.5px;letter-spacing:1.6px;text-transform:uppercase} #mfam .satcap{display:flex;justify-content:space-between;align-items:baseline;gap:22px;flex-wrap:wrap;margin-top:12px;font-size:13px;line-height:1.5;color:var(--txt3)} #mfam .satcap b{font-family:'Gilroy semiBold',Gilroy,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;font-weight:400;color:var(--txt)} @media(max-width:820px){#mfam .satimg{height:380px}} @media(max-width:680px){#mfam .qa summary{padding:18px 14px;font-size:17px}#mfam .qa details .a{padding:0 14px 20px}#mfam section{padding:44px 0}} #mfam .mfshare{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 6px} #mfam .mfsh-btn{display:inline-flex;align-items:center;gap:8px;padding:9px 15px;background:transparent;border:1px solid var(--blue);color:var(--blue-ink);font-family:'Gilroy semiBold',Helvetica,sans-serif;font-size:11.5px;letter-spacing:1.6px;text-transform:uppercase;cursor:pointer;line-height:1} #mfam .mfsh-btn:hover{background:var(--blue);color:#fff} #mfam .mfsh-btn svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8} #mfam .mfsh-net{display:none;align-items:center;gap:8px;flex-wrap:wrap} #mfam .mfshare.on .mfsh-net{display:flex} #mfam .mfsh-net a,#mfam .mfsh-net button{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid var(--line);background:#fff;color:#3d4654;cursor:pointer;padding:0} #mfam .mfsh-net a:hover,#mfam .mfsh-net button:hover{border-color:var(--blue);color:var(--blue-ink)} #mfam .mfsh-net svg{width:16px;height:16px;fill:currentColor} #mfam .mfsh-said{font-size:12px;color:var(--green);font-family:'Gilroy semiBold',Helvetica,sans-serif;letter-spacing:.6px}#mfam .mlogo{display:inline-flex;align-items:center;justify-content:center;background:#fff;padding:10px 16px;height:68px;margin:0 0 18px;border:1px solid #e2e7ee}#mfam .mlogo .li{display:block;background:center\/contain no-repeat}#mfam .mlogo.sm{position:absolute;left:14px;top:96px;height:52px;padding:6px 10px;margin:0}#mfam .mlogo.sm img{max-height:38px;max-width:120px}#mfam .mlogo.xs{height:28px;padding:2px 6px;margin:0 10px 0 0;vertical-align:middle;border:0;background:transparent}#mfam .mlogo.xs img{max-height:24px;max-width:72px}#mfam .mrel{position:relative;padding-top:0}#mfam .mrel .mim{display:block;height:130px;margin:-26px -26px 44px;background:#eef1f6 center\/cover no-repeat}#mfam a.mname{display:inline-flex;align-items:center}#mfam span.acard{cursor:default}#mfam .pcred{font-size:12px;color:var(--txt3);margin:10px 0 28px;line-height:1.5}<\/style>\n<div id=\"mfam\">\n<div class=\"hero\">\n<div class=\"wrap hero-in\">\n<div class=\"crumb\"><a href=\"https:\/\/migflug.com\/air-forces\/\">Order of Battle<\/a> &middot; <a href=\"https:\/\/migflug.com\/aircraft-manufacturers\/\">Aircraft manufacturers<\/a> &middot; Germany<\/div>\n<h1>Flettner<\/h1>\n<div class=\"native\">Flettner Flugzeugbau GmbH<\/div>\n<p class=\"sub\">A village schoolteacher who invented the trim tab and sailed a ship across the Atlantic on spinning cylinders went on to build the Kolibri, by one account the world&rsquo;s first series-production helicopter.<\/p>\n<div class=\"statstrip\">\n<div class=\"stat\"><b>1935<\/b><span>Founded<\/span><\/div>\n<div class=\"stat\"><b>Defunct 1945<\/b><span>Status<\/span><\/div>\n<div class=\"stat\"><b>6<\/b><span>Aircraft on record<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"accent\"><\/div>\n<\/div>\n<div class=\"wrap\">\n<div class=\"chips\"><span class=\"chip\"><b>Country<\/b>Germany<\/span><span class=\"chip\"><b>Founded<\/b>1935<\/span><span class=\"chip\"><b>Founders<\/b>Anton Flettner<\/span><span class=\"chip\"><b>Headquarters<\/b>Berlin-Johannisthal<\/span><span class=\"chip\"><b>Status<\/b>Defunct 1945<\/span><\/div>\n<div class=\"mfshare\"><button type=\"button\" class=\"mfsh-btn\"><svg viewBox=\"0 0 24 24\"><circle cx=\"18\" cy=\"5\" r=\"3\"\/><circle cx=\"6\" cy=\"12\" r=\"3\"\/><circle cx=\"18\" cy=\"19\" r=\"3\"\/><path d=\"M8.6 10.6l6.8-4M8.6 13.4l6.8 4\"\/><\/svg>Share<\/button><span class=\"mfsh-net\"><\/span><span class=\"mfsh-said\"><\/span><\/div>\n<\/div>\n<section id=\"story\">\n<div class=\"wrap\">\n<div class=\"kicker\">The story<\/div>\n<h2>Flettner: the company and the aircraft that made its name<\/h2>\n<div class=\"cols\">\n<div>\n<h3 class=\"sh\">The schoolteacher inventor<\/h3>\n<p>Anton Flettner was born in 1885 in Eddersheim, near Frankfurt, and began as a village schoolteacher, then taught mathematics and physics in Frankfurt. In the First World War he worked on remote control for the War Ministry, proposing a steerable torpedo and a remote-controlled combat car, both rejected as impractical. His lasting gift was smaller: the servo tab, patented in 1918, which evolved into <span class=\"imp\">the trim tab found on virtually every aeroplane<\/span> and many large ships.<\/p>\n<h3 class=\"sh\">A ship driven by spinning towers<\/h3>\n<p>Then came his strangest invention. Watching sand flow over his spinning hand on a beach, the story goes, he grasped the Magnus effect, and with help from Ludwig Prandtl, Albert Betz and others he refitted the schooner Buckau with two tall rotating cylinders in 1924. Renamed Baden-Baden, <span class=\"imp\">the rotor ship crossed the Atlantic in 1926<\/span>. A partner, Sigurd Savonius, turned the idea into a wind turbine, and Flettner&rsquo;s ventilator company, built on that patent, paid for his later work on helicopters.<\/p>\n<h3 class=\"sh\">Rotors instead of wings<\/h3>\n<p>Flettner Flugzeugbau, based at Berlin-Johannisthal, spent years chasing rotary-wing flight. The Fl 184 autogyro and the Fl 185 gyrodyne of the mid-1930s were steps on the way. With Kurt Hohenemser and Gerd Sissingh, Flettner then built the Fl 265 of 1939, with two intermeshing, contra-rotating rotors whose torques cancelled out. This synchropter layout, <span class=\"imp\">the Flettner double rotor<\/span>, could switch from powered flight to autorotation and back, making it the safest helicopter of its day.<\/p>\n<h3 class=\"sh\">The Kolibri<\/h3>\n<p>Its refinement was the Fl 282 Kolibri, a small open-cockpit synchropter first flown in 1941. It took off repeatedly from a platform on the cruiser K&#246;ln and was tested in the Baltic, Mediterranean and Aegean. The French historian Yves Le Bec calls it the world&rsquo;s first series-production helicopter. In 1944 the air ministry ordered 1,000 from BMW, but bombing destroyed the Munich plant after only 24 were built. The last served as artillery spotters near Berlin, falling to Soviet fighters and flak.<\/p>\n<h3 class=\"sh\">Paperclip and the synchropter legacy<\/h3>\n<p>Flettner&rsquo;s Jewish wife and family spent the war in Sweden. Interned at Kransberg Castle in 1945, he was taken to the United States under Operation Paperclip and founded the Flettner Aircraft Corporation in New York, which was not commercially successful. He researched for the US Army, Air Force and Navy until his death in New York in 1961. Intermeshing rotors reappeared after the war in Kaman&rsquo;s helicopters, though accounts differ on whether Flettner himself ever worked for Kaman.<\/p>\n<\/div>\n<div>\n<div class=\"pull\">A village schoolteacher who invented the trim tab and sailed a ship across the Atlantic on spinning cylinders went on to build the Kolibri, by one account the world&rsquo;s first series-production helicopter.<cite>Flettner &middot; verified 2026-10-03<\/cite><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<hr class=\"divider\">\n<section id=\"glance\">\n<div class=\"wrap\">\n<div class=\"kicker\">At a glance<\/div>\n<h2>Flettner in numbers<\/h2>\n<div class=\"specgrid three\">\n<div class=\"spectable\">\n<h4>The company<\/h4>\n<dl>\n<dt>In short<\/dt>\n<dd>Founded 1935<\/p>\n<ul class=\"gl\">\n<li>Founded by Anton Flettner at Berlin-Johannisthal (1926 in some sources)<\/li>\n<li>Financed by Flettner&rsquo;s ventilator business<\/li>\n<li>Engineers Kurt Hohenemser and Gerd Sissingh<\/li>\n<li>Dissolved 1945<\/li>\n<\/ul>\n<\/dd>\n<\/dl>\n<\/div>\n<div class=\"spectable\">\n<h4>Production<\/h4>\n<dl>\n<dt>Best known for<\/dt>\n<dd>Fl 282 Kolibri<\/p>\n<ul class=\"gl\">\n<li>Fl 184 autogyro and Fl 185 gyrodyne prototypes<\/li>\n<li>Fl 265 synchropter, 6 built<\/li>\n<li>Fl 282 Kolibri, 24 built<\/li>\n<li>1,000 Fl 282s ordered from BMW in 1944, never built<\/li>\n<\/ul>\n<\/dd>\n<\/dl>\n<\/div>\n<div class=\"spectable\">\n<h4>Today<\/h4>\n<dl>\n<dt>Now<\/dt>\n<dd>Defunct since 1945<\/p>\n<ul class=\"gl\">\n<li>Partial Fl 282 airframe at the Midland Air Museum, Coventry<\/li>\n<li>Fl 282 rotor heads and transmission held by the Smithsonian<\/li>\n<li>Trim tabs and intermeshing rotors remain in use<\/li>\n<\/ul>\n<\/dd>\n<\/dl>\n<\/div>\n<div class=\"spectable\">\n<h4>The numbers<\/h4>\n<dl>\n<dt>Fl 282 Kolibri built<\/dt>\n<dd>24<\/dd>\n<dt>Fl 282 ordered from BMW<\/dt>\n<dd>1,000<span class=\"gnote\">1944<\/span><\/dd>\n<dt>Fl 265 built<\/dt>\n<dd>6<\/dd>\n<\/dl>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<hr class=\"divider\">\n<section id=\"fleet\">\n<div class=\"wrap\">\n<div class=\"kicker\">The aircraft<\/div>\n<h2>Every notable Flettner aircraft<\/h2>\n<div class=\"tscroll\">\n<table class=\"oobt\" id=\"mfrtbl\">\n<thead>\n<tr>\n<th>Aircraft<\/th>\n<th>Role<\/th>\n<th>First flight<\/th>\n<th>Built<\/th>\n<th>Status<\/th>\n<th>Note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Flettner Fl 184<\/td>\n<td>Reconnaissance autogyro (prototype)<\/td>\n<td>1930<\/td>\n<td>1<\/td>\n<td><span class=\"pill was\">Retired<\/span><\/td>\n<td>Two-seat night reconnaissance and anti-submarine design<\/td>\n<\/tr>\n<tr>\n<td>Flettner Fl 185<\/td>\n<td>Experimental gyrodyne<\/td>\n<td>1936<\/td>\n<td>1<\/td>\n<td><span class=\"pill was\">Retired<\/span><\/td>\n<td>Could fly as helicopter or gyroplane<\/td>\n<\/tr>\n<tr>\n<td>Flettner Fl 265<\/td>\n<td>Experimental synchropter helicopter<\/td>\n<td>1939<\/td>\n<td>6<\/td>\n<td><span class=\"pill was\">Retired<\/span><\/td>\n<td>First intermeshing-rotor helicopter; Kriegsmarine-backed<\/td>\n<\/tr>\n<tr>\n<td>Flettner Fl 282 Kolibri<\/td>\n<td>Naval reconnaissance helicopter<\/td>\n<td>1941<\/td>\n<td>24<\/td>\n<td><span class=\"pill was\">Retired<\/span><\/td>\n<td>Flown from the cruiser K&#246;ln; BMW production halted by bombing<\/td>\n<\/tr>\n<tr>\n<td>Flettner Fl 285<\/td>\n<td>Reconnaissance helicopter (project)<\/td>\n<td><\/td>\n<td><\/td>\n<td><span class=\"pill was\">Retired<\/span><\/td>\n<td>Under development at war&rsquo;s end<\/td>\n<\/tr>\n<tr>\n<td>Flettner Fl 339<\/td>\n<td>Transport helicopter (project)<\/td>\n<td><\/td>\n<td><\/td>\n<td><span class=\"pill was\">Retired<\/span><\/td>\n<td>Planned for about 20 passengers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n<hr class=\"divider\">\n<section id=\"people\">\n<div class=\"wrap\">\n<div class=\"kicker\">Places, people, records<\/div>\n<h2>Where Flettner built, who led it, what it achieved<\/h2>\n<div class=\"cols\">\n<div>\n<h3>Factories<\/h3>\n<ul class=\"gl\">\n<li><b>Johannisthal works<\/b> &middot; Berlin-Johannisthal &mdash; Company base 1935&ndash;1945<\/li>\n<\/ul>\n<\/div>\n<div>\n<h3>People<\/h3>\n<ul class=\"gl\">\n<li><b>Anton Flettner<\/b> &middot; founder &mdash; 1885&ndash;1961; inventor of the servo tab and the Flettner rotor ship<\/li>\n<li><b>Kurt Hohenemser<\/b> &middot; engineer &mdash; Partner who worked out the detail of Flettner&rsquo;s helicopters; emigrated to the US<\/li>\n<li><b>Richard Perlia<\/b> &middot; test pilot &mdash; Tested the Fl 265 in 1939<\/li>\n<\/ul>\n<\/div>\n<div>\n<h3>Records and firsts<\/h3>\n<ul class=\"gl\">\n<li>Fl 265 (1939): first helicopter with intermeshing rotors, able to switch between powered flight and autorotation<\/li>\n<li>Fl 282 Kolibri: described by Yves Le Bec as the world&rsquo;s first series-production helicopter<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<hr class=\"divider\">\n<section id=\"timeline\">\n<div class=\"wrap\">\n<div class=\"kicker\">Timeline<\/div>\n<h2>Flettner, year by year<\/h2>\n<div class=\"tl\">\n<div class=\"tl-item\">\n<div class=\"yr\">1 November 1885<\/div>\n<p>Anton Flettner born in Eddersheim<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1918<\/div>\n<p>Flettner patents the servo tab<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1924<\/div>\n<p>Rotor ship Buckau, later Baden-Baden, completed<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1926<\/div>\n<p>Baden-Baden crosses the Atlantic<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1935<\/div>\n<p>Flettner Flugzeugbau founded at Johannisthal; Fl 184 autogyro<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1936<\/div>\n<p>Fl 185 gyrodyne flies<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1939<\/div>\n<p>Fl 265 synchropter tested by Richard Perlia<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1941<\/div>\n<p>Fl 282 Kolibri flies, including from the cruiser K&#246;ln<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1944<\/div>\n<p>BMW contracted for 1,000 Fl 282s; plant bombed after 24<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1945<\/div>\n<p>Company ends; Flettner interned at Kransberg<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">1949<\/div>\n<p>Flettner Aircraft Corporation active in the United States<\/p>\n<\/div>\n<div class=\"tl-item\">\n<div class=\"yr\">29 December 1961<\/div>\n<p>Anton Flettner dies in New York<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<hr class=\"divider\">\n<section id=\"faq\">\n<div class=\"wrap\">\n<div class=\"kicker\">Questions &amp; Answers<\/div>\n<h2>Everything people ask about Flettner<\/h2>\n<div class=\"qa\">\n<details open>\n<summary>What is a Flettner helicopter?<\/summary>\n<div class=\"a\">A synchropter: two intermeshing rotors on side-by-side shafts turning in opposite directions, so no tail rotor is needed. Flettner pioneered it with the Fl 265 and Fl 282.<\/div>\n<\/details>\n<details>\n<summary>Was the Flettner Fl 282 the first production helicopter?<\/summary>\n<div class=\"a\">The historian Yves Le Bec describes it as the world&rsquo;s first series-production helicopter. Only 24 were built before bombing stopped production.<\/div>\n<\/details>\n<details>\n<summary>What else did Anton Flettner invent?<\/summary>\n<div class=\"a\">The servo tab, ancestor of the trim tab, the Flettner rotor ship driven by the Magnus effect, and a ventilator based on the Savonius rotor.<\/div>\n<\/details>\n<details>\n<summary>What happened to Flettner after the war?<\/summary>\n<div class=\"a\">He went to the United States under Operation Paperclip, founded the Flettner Aircraft Corporation and did research for the US armed forces until his death in 1961.<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a Flettner helicopter?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A synchropter: two intermeshing rotors on side-by-side shafts turning in opposite directions, so no tail rotor is needed. Flettner pioneered it with the Fl 265 and Fl 282.\"}}, {\"@type\": \"Question\", \"name\": \"Was the Flettner Fl 282 the first production helicopter?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The historian Yves Le Bec describes it as the world\\u2019s first series-production helicopter. Only 24 were built before bombing stopped production.\"}}, {\"@type\": \"Question\", \"name\": \"What else did Anton Flettner invent?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The servo tab, ancestor of the trim tab, the Flettner rotor ship driven by the Magnus effect, and a ventilator based on the Savonius rotor.\"}}, {\"@type\": \"Question\", \"name\": \"What happened to Flettner after the war?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"He went to the United States under Operation Paperclip, founded the Flettner Aircraft Corporation and did research for the US armed forces until his death in 1961.\"}}]}<\/script><hr class=\"divider\">\n<section>\n<div class=\"wrap\">\n<div class=\"kicker\">Continue the tour<\/div>\n<h2>Around Flettner<\/h2>\n<div class=\"relgrid\"><a class=\"rel\" href=\"https:\/\/migflug.com\/aircraft-manufacturers\/dornier\/\"><span class=\"rk\">Germany<\/span><span class=\"rh\">Dornier<\/span><span class=\"rp\">The Lake Constance firm that built a 12-engine flying boat for 169 people, dodged Versailles by building in Italy and Switzerland, and went bankrupt twelve days after&hellip;<\/span><span class=\"go\">Read the Dornier page<\/span><\/a><a class=\"rel\" href=\"https:\/\/migflug.com\/aircraft-manufacturers\/mbb\/\"><span class=\"rk\">Germany<\/span><span class=\"rh\">Messerschmitt-B&#246;lkow-Blohm (MBB)<\/span><span class=\"rp\">West Germany&rsquo;s postwar aerospace champion fused Messerschmitt, Bolkow and the Hamburg shipbuilders&rsquo; aircraft arm, built the helicopter that could loop, and&hellip;<\/span><span class=\"go\">Read the Messerschmitt-B&#246;lkow-Blohm (MBB) page<\/span><\/a><a class=\"rel\" href=\"https:\/\/migflug.com\/aircraft-manufacturers\/\"><span class=\"rk\">The index<\/span><span class=\"rh\">All aircraft manufacturers<\/span><span class=\"rp\">Every company that built an aircraft flown by the air forces in the Order of Battle, current and historic.<\/span><span class=\"go\">Open the list<\/span><\/a><\/div>\n<\/div>\n<\/section>\n<hr class=\"divider\">\n<section style=\"padding:48px 0 64px\">\n<div class=\"wrap\">\n<div class=\"kicker\">Sources &amp; Further Reading<\/div>\n<h2>Every fact, checked<\/h2>\n<ul class=\"srclist\">\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Anton_Flettner\" rel=\"nofollow noopener\" target=\"_blank\">Anton Flettner &ndash; Wikipedia<\/a><span><\/span><\/li>\n<li><a href=\"https:\/\/de.wikipedia.org\/wiki\/Flettner_Flugzeugbau\" rel=\"nofollow noopener\" target=\"_blank\">Flettner Flugzeugbau &ndash; Wikipedia (German)<\/a><span><\/span><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Flettner_Fl_282\" rel=\"nofollow noopener\" target=\"_blank\">Flettner Fl 282 &ndash; Wikipedia<\/a><span><\/span><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Flettner_Fl_265\" rel=\"nofollow noopener\" target=\"_blank\">Flettner Fl 265 &ndash; Wikipedia<\/a><span><\/span><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Flettner_Fl_184\" rel=\"nofollow noopener\" target=\"_blank\">Flettner Fl 184 &ndash; Wikipedia<\/a><span><\/span><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Flettner_Fl_185\" rel=\"nofollow noopener\" target=\"_blank\">Flettner Fl 185 &ndash; Wikipedia<\/a><span><\/span><\/li>\n<\/ul>\n<p class=\"verified\">Verified 2026-10-03.<\/p>\n<\/div>\n<\/section>\n<\/div>\n<style>#mfam .nflag{background-image:url(https:\/\/migflug.com\/wp-content\/uploads\/2026\/09\/aircraft-manufacturer-country-flags-v4.png)!important}#mfam .nf0{background-position:-2px -2px}#mfam .nf1{background-position:-24px -2px}#mfam .nf2{background-position:-46px -2px}#mfam .nf3{background-position:-68px -2px}#mfam .nf4{background-position:-90px -2px}#mfam .nf5{background-position:-112px -2px}#mfam .nf6{background-position:-134px -2px}#mfam .nf7{background-position:-156px -2px}#mfam .nf8{background-position:-178px -2px}#mfam .nf9{background-position:-200px -2px}#mfam 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el=document.getElementById(\"shr-data\");var js=decodeURIComponent(escape(atob(el.getAttribute(\"data-js\"))));var sc=document.createElement(\"script\");sc.text=js;document.body.appendChild(sc);})();<\/script>","protected":false},"excerpt":{"rendered":"<p>Order of Battle &middot; Aircraft manufacturers &middot; Germany Flettner Flettner Flugzeugbau GmbH A village schoolteacher who invented the trim tab and sailed a ship across the Atlantic on spinning cylinders went on to build the Kolibri, by one account the world&rsquo;s first series-production helicopter. 1935Founded Defunct 1945Status 6Aircraft on record CountryGermanyFounded1935FoundersAnton FlettnerHeadquartersBerlin-JohannisthalStatusDefunct 1945 Share The [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":31477,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"editor_notices":[],"footnotes":""},"class_list":["post-32253","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Flettner | MiGFlug<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/migflug.com\/ru\/\u0430\u0432\u0438\u0430\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0438\/\u0444\u043b\u0435\u0442\u0442\u043d\u0435\u0440\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flettner | MiGFlug\" \/>\n<meta property=\"og:description\" content=\"Order 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