Nieuport-Delage NiD 50 HB.4
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| name=NiD 50 HB.4 | image= | caption= }}{{Infobox Aircraft Type | type= | national origin= | manufacturer= | designer= | first flight= | introduced= | retired= | status= | primary user= | more users= | produced= | number built=1 partially completed | program cost= | unit cost= | developed from= | variants with their own articles= }} |
The Nieuport-Delage NiD 50 HB.4 was a twin-engined bomber / reconnaissance floatplane, designed in the latter half of the 1920s, to the 1928 HB.4 specification from the Service Technique de l'Aéronautique (STAé), for a four-seat seaplane bomber. Development was cancelled before the first prototype was completed.
Development
Issued in January 1928, the STAé published an offshore torpedo bomber seaplane HB.4 specification. Nieuport-Astra responded and exhibited the partially complete NiD 50 HB.4 at the 1928 Paris Aero Salon. The aircraft was a large monoplane skinned entirely with light alloy sheet supported on two {{cvt|10.60|m}} long all-metal floats and powered by two {{cvt|420|hp|order=flip}} Gnome & Rhône 9A Jupiter radial engines.{{cite web |last1=Hartmann |first1=Gérard |title=Les avions Nieuport-Delage |url=http://www.hydroretro.net/etudegh/les_avions_nieuport-delage.pdf |website=hydroretro.net |accessdate=17 February 2018 |page=28 |language=French }}
The 4 crew members were to have consisted of a gunner in the nose, pilot, navigator and gunner in the rear fuselage.
Specifications (NiD-50 HB.4)
File:Nieuport-Delage_NiD_50_HB.4_3-view_L'Aéronautique_June,1928.png
{{Aircraft specs
|ref=Jane's all the World's Aircraft 1928{{cite book |title=Jane's all the World's Aircraft 1928 |editor1-last=Grey |editor1-first=C.G. |year=1928 |publisher=Sampson Low, Marston & company, ltd |location=London |page=114c}}
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|guns= 4x {{cvt|0.303|in|order=flip}} Lewis machine-guns on twin mounts in front and rear gunners compartments, with provision for a ventral machine-gun
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