Editing Dornier Do 17 (section)

==Design==
The forward fuselage had a conventional stepped cockpit, with a fully glazed nose. Early variants were labelled the "flying pencil" owing to its sleek and continuous "stick-like" lines. As a result of the lessons learned in the [[Spanish Civil War]], the cockpit roof was raised and the lower, or bottom half, of the crew compartment was a typical under-nose [[gondola (airplane)|gondola]] or "Bodenlafette" (abbreviated ''Bola''): this inverted-casemate design ventral defensive armament position was a common feature of most German medium bombers. The ''Bola'' was extended back to the leading edge of the wings where the lower-rear gunners position and upper-rear gunner position were level with each other.<ref name="Goss 2005, p. 12.">Goss 2005, p. 12.</ref> As with contemporary German bombers, the crew were concentrated in a single compartment. 

The cockpit layout consisted of the pilot seat and front gunner in the forward part of the cockpit. The pilot sat on the left side, close up to the Plexiglas windshield. One of the gunners sat on the right seat, which was set further back to provide room for the {{convert|7.92|mm|abbr=on}} [[MG 15 machine gun]] to be traversed in use. The Do 17 usually carried a crew of four: the pilot, a bombardier and two gunners. The bomb-aimer also manned the MG 15 in the nose glazing and ''Bola''-housed rear lower position. The two gunners operated the forward-firing MG 15 installed in the front windshield, the two MGs located in the side windows (one each side) and the rearward firing weapon. The cockpit offered a bright and panoramic view at high altitude.<ref>Goss 2005, p. 25.</ref><!-- the description is described by a series of photographs and captions in Goss--><ref>Goss 2005, pp. 24–25.</ref> The standard ammunition load was 3,300 rounds of 7.92&nbsp;mm ammunition in 44 double-drum magazines.<ref name="Griehl 2005, p. 6.">Griehl 2005, p. 6.</ref>

[[File:Bundesarchiv Bild 101I-658-6356-25, Reichsgebiet, Piloten im Cockpit eines Flugzeugs.jpg|thumb|left|The Do 17 carried one pilot; to his right sat one of two gunners]]
The wings were of a broad {{convert|55|m2|ft2|abbr=on}} area and had a span of {{convert|18|m|ftin|frac=8|abbr=on}} with a straight leading edge which curved in a near-perfect semicircle into the trailing edge. The positions of the wing roots were offset. The leading edge wing root merged with the top of the fuselage and cockpit. As the wing extended backwards, by roughly two thirds, it declined downwards at a sharp angle so that the trailing edge wing root ended nearly halfway down the side of the fuselage increasing the [[angle of incidence (aerodynamics)|angle of incidence]].<ref>Wrobel 2008, page not numbered after p. 93. Schematic drawing in Appendices: "Sheet 1".</ref> This design feature was used on all future Dornier bomber designs, namely the [[Dornier Do 217]].<ref>Griehl 1991, p. 57.</ref> The trailing edge was [[Aircraft fairing|faired]] into the round fuselage shape. The engine nacelle was also faired into the [[Flap (aircraft)|flaps]]. The extreme rear of the nacelle was hollow and allowed the flap with an attached vertical slot to fit into the cavity when deployed.<ref>Goss 2005, p. 20.</ref>

[[File:FuG 10 radio Dornier Do 17 Z 1.JPG|thumb|upright|[[Luftwaffe_radio_equipment_of_World_War_II#Airborne_communications|FuG 10]] radio set]]

The fuselage was {{convert|15.80|m|ftin|frac=8|abbr=on}} long. It was thin and narrow, which presented an enemy with a difficult target to hit. The fuselage had twin vertical stabilizers to increase lateral stability. The power plant of the Z-1 was to have been the [[Daimler-Benz DB 601]] but, owing to shortages from priority allocation for Bf 109E and Bf 110 fighter production, it was allocated [[Bramo 323]] A-1 power plants. The Bramos could only reach {{convert|352|km/h|mph|abbr=on}} at {{convert|1,070|m|ft|abbr=on}}. The limited performance of the Bramo 323s ensured the Do 17 could not reach {{convert|416|km/h|mph|abbr=on}} at {{convert|3,960|m|ft|abbr=on}} in level flight when fully loaded.<ref name="Griehl 2005, p. 5.">Griehl 2005, p. 5.</ref> The range of the Do 17Z-1 at ground level was {{convert|635|nmi|km|abbr=on}}; this increased to 1,370&nbsp;km (850&nbsp;nm) at {{convert|4,700|m|ft|abbr=on}}. This gave an average attack range of {{convert|400|nmi|km|abbr=on}}. The introduction of the Bramo 323P increased the Z-2 performance slightly in all areas.<ref name="Griehl 2005, p. 5."/>

The Dornier had [[self-sealing fuel tank]]s to protect fuel stored in the wings and fuselage. This reduced the loss of fuel and risk of fire when hit in action, and often enabled the aircraft to return. Twenty oxygen bottles were provided for crew use during long flights above {{convert|3,660|m|ft|abbr=on}}.<ref name="Griehl 2005, p. 6."/> Communications usually consisted of FuG X, the later [[Luftwaffe_radio_equipment_of_World_War_II#Airborne_communications|FuG 10]], navigational direction finder ''PeilG V'' [[Radio direction finder|direction finder]] (PeilG - ''Peilgerät'') and the FuG 25 IFF and FuBI 1 blind-landing devices. The crew communicated by EiV intercom.<ref name="Griehl 2005, p. 6."/> A primitive autopilot device, the [[Siemens]] K4Ü, was installed and could maintain [[Bearing (navigation)|bearing]] using the rudder's control surfaces.<ref name="Griehl 2005, p. 6."/>

The bomb bay had four bomb racks, the No. 5 for SC50 bombs and two ETC 500 racks to carry heavier loads of up to {{convert|500|kg|abbr=on}} each. A ''Lotfe'' A, or B bombsight was issued together with the BZA-2 aperture (a modernised optical lens system).<ref name="Griehl 2005, p. 6."/> The bomb bay allowed two options, one was to carry four {{convert|250|kg|lb|abbr=on}} bombs for a load of {{convert|1000|kg|lb|abbr=on}}, which reduced aircraft range. With half the maximum load, ten {{convert|50|kg|lb|abbr=on}} bombs, additional fuel tanks could be placed into the forward part of the bomb bay to increase range. The [[Bombardier (air force)|bomb aimer]] aimed the bombs via the Lotfe (A, B or C 7/A, depending on the variant) bomb sight which was in the left side of the nose compartment directly under and forward of the pilot.<ref>Keskinen and Stenman 1999, pp. 6–7.</ref> When fully loaded, the Z-1 weighed {{convert|7,740|kg|lb|abbr=on}}.<ref name="Griehl 2005, p. 5."/>