Dynali H2S

{{Short description|Belgian kit helicopter}} {{Use dmy dates|date=August 2022}} {{Use British English|date=August 2022}}  {{Infobox aircraft | name = H2S | logo = | logo_size = | image = Helicopter Dynali 2HS (7132278557).jpg | alt = | caption = | long_caption = | other_names = | aircraft_type = Helicopter | aim = | outcome = | related = | national_origin = Belgium | manufacturer = Dynali Helicopter Company | design_group = | designer = Jacky Tonet | builder = | issuer = | status = Production completed (2017) | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = | initiated = | in_service = | last_flight = | expected = | developed_from = | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = }} The '''Dynali H2S''' is a Belgian helicopter, designed by Jacky Tonet and produced by Dynali of the Thines district of Nivelles. When it was available the aircraft was supplied as a kit for amateur construction<ref name="WDLA11">Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 190. WDLA UK, Lancaster UK, 2011. {{ISSN|1368-485X}}</ref> or fully assembled, supplied ready-to-fly.<ref name="Company">{{cite web|url = http://www.dynali.com/h2s.php|title = Light helicopters with the lowest cost|accessdate = 5 March 2014|last = Dynali Helicopter Company|date = n.d.|url-status = dead|archiveurl = https://web.archive.org/web/20140307061607/http://www.dynali.com/h2s.php|archivedate = 7 March 2014}}</ref>

By December 2017 the design was no longer advertised on the company website and production has most likely ended.<ref>{{cite web|url = https://www.dynali.com/|title = Ultralight Helicopter Manufacturer|accessdate = 9 December 2017|author=Dynali Helicopter Company|work = www.dynali.com }}</ref>

==Design and development== The H2S was designed to comply with the amateur-built aircraft rules, but a light-sport aircraft category version, the Dynali H3, is also being developed. It features a single main rotor, a two-seats-in side-by-side configuration enclosed cockpit with a windshield, skid-type landing gear and a four-cylinder, liquid cooled four-stroke, {{convert|165|to|185|hp|kW|0|abbr=on}} Subaru EJ25 automotive conversion engine.<ref name="WDLA11" />

The aircraft fuselage is made from a combination of aluminium tubing and welded stainless steel, covered with a polycarbonate fairing. Its {{convert|7.22|m|ft|1|abbr=on}} diameter two-bladed rotor has a chord of {{convert|20|cm|in|1|abbr=on}} and employs composite main rotor blades. The tail rotor is of an enclosed Fenestron type with eight blades. The aircraft has an empty weight of {{convert|465|kg|lb|0|abbr=on}} and a gross weight of {{convert|700|kg|lb|0|abbr=on}}, giving a useful load of {{convert|235|kg|lb|0|abbr=on}}. With full fuel of {{convert|80|L}} the payload is {{convert|177|kg|lb|0|abbr=on}}.<ref name="WDLA11" />

Like many helicopters designed in France and Russia, the main rotor blades advance to the left.<!--

==Operational history== -->

==Variants== ;Kit version :Model with a gross weight of {{convert|700|kg|lb|0|abbr=on}}, powered by a four cylinder, air-cooled, four-stroke, {{convert|165|to|185|hp|kW|0|abbr=on}} Subaru EJ25 automotive conversion engine.<ref name="WDLA11" /> ;Dynali H3 EasyFlyer :Lightened version powered by a four cylinder, air and liquid-cooled, four-stroke, dual ignition {{convert|100|hp|kW|0|abbr=on}} Rotax 912S or a turbocharged {{convert|115|hp|kW|0|abbr=on}} Rotax 914 engine for the light-sport aircraft category.<ref name="WDLA11" />

==Specifications (H2S) == {{Aircraft specs |ref=Bayerl and Dynali<ref name="WDLA11" /><ref name="Specs">{{cite web|url = http://www.dynali.com/Official_Website/Specifications.html|title = Specifications|accessdate = 3 February 2013|last = Dynali Helicopter Company|year = 2011|url-status = dead|archiveurl = https://web.archive.org/web/20130127080211/http://www.dynali.com/Official_Website/Specifications.html|archivedate = 27 January 2013}}</ref> |prime units?=met  |genhide=

|crew=one |capacity=one passenger |length m=7.95 |length ft= |length in= |length note=blades fore and aft |width m=2.00 |width ft= |width in= |width note=at the landing gear |height m= |height ft= |height in= |height note= |airfoil= |empty weight kg=465 |empty weight lb= |empty weight note= |gross weight kg=700 |gross weight lb= |gross weight note= |fuel capacity={{convert|80|L}} |more general=  |eng1 number=1 |eng1 name=Subaru EJ25 |eng1 type=four cylinder, air-cooled, four-stroke automotive engine |eng1 kw= |eng1 hp=185

|max speed kmh=190 |max speed mph= |max speed kts= |max speed note= |cruise speed kmh=150 |cruise speed mph= |cruise speed kts= |cruise speed note= |never exceed speed kmh= |never exceed speed mph= |never exceed speed kts= |never exceed speed note= |range km= |range miles= |range nmi= |range note= |endurance= |ceiling m= |ceiling ft= |ceiling note= |g limits= |roll rate= |glide ratio= |climb rate ms=6 |climb rate ftmin= |climb rate note= |time to altitude= |disk loading kg/m2= |disk loading lb/sqft= |disk loading note= |fuel consumption kg/km= |fuel consumption lb/mi= |power/mass= |thrust/weight= |more performance= |avionics= }}

==See also== {{aircontent  |see also= |related= |similar aircraft= *Aerokopter AK1-3 Sanka *Alpi Syton AH 130 *DF Helicopters DF334 *Famà Kiss 209 *Heli-Sport CH-7 *LCA LH 212 Delta *RotorWay Exec |lists= *List of rotorcraft *List of ultralight helicopters }}

==References== {{reflist}}

==External links== {{Commons category|Dynali H2S}} * {{Official website|http://www.dynali.com/}}

H2 Category:2000s Belgian sport aircraft Category:2000s Belgian helicopters Category:Homebuilt aircraft Category:Single-engined piston helicopters

Dynali H2S

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