Aviastroitel AC-5M

{{Short description|Russian motorglider}}

{{Use dmy dates|date=January 2022}}

{{Use American English|date=January 2022}}

{{Infobox aircraft begin

| name = AC-5M

| image = ac5russia.jpg

| caption = An AC-5K in a field at Hamilton Municipal Airport.

}}{{Infobox aircraft type

| type = Motor glider and Unmanned aerial vehicle

| national origin = Russia

| manufacturer = Aviastroitel

| designer =

| first flight = December 1999

| introduced =

| retired =

| status = In production

| primary user =

| more users =

| produced = 2000-2003

| number built = 35

| developed from = Aviastroitel AC-4 Russia

| variants with their own articles =

}}

The Aviastroitel AC-5M is a Russian mid-wing, single-seat, T-tailed motor glider and unmanned aerial vehicle that is produced by Aviastroitel, now Glider Air Craft.Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 54. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485X{{Cite web|url = http://www.glidingsport.ru/ac/en/ourhistory/inde07.html|title = This Russian enterprise Aviastroitel |accessdate = 5 October 2011|last = Aviastroitel|authorlink = |year = 2006}}{{Cite web|url = http://www.glider.ru/en/glider/motorglider-ac-5m|title = Motor glider AC-5M|accessdate = 7 October 2011|last = Glider Air Craft|authorlink = |date = n.d.|archive-url = https://web.archive.org/web/20111022235738/http://www.glider.ru/en/glider/motorglider-ac-5m|archive-date = 22 October 2011|url-status = dead}}

Design and development

The AC-5M is derived from the motorized version of the Aviastroitel AC-4 Russia. Its design goals were to produce a simple and inexpensive self-launching sailplane. It had its first flight in December 1999 and production commenced in 2000 with a total of 35 completed.

The AC-5M features a {{convert|12.6|m|ft|1|abbr=on}} span wing that employs a Wortmann FX60-157 airfoil. The wings are mounted on the fuselage with a single cam-pin and the ailerons and air brakes hook-up automatically. Assembly can be accomplished by one person in five minutes. The engine is a {{convert|19|kW|hp|0|abbr=on}} Zanzottera MZ-35R, which is a special narrow engine design developed specifically for retractable engine motor gliders. The engine retracts rearwards into a bay behind the cockpit and is closed by two doors for drag reduction. The propeller is a two bladed wooden design of {{convert|1.18|m|in|0|abbr=on}} diameter. The landing gear is a retractable {{convert|310|mm|in|1|abbr=on}} monowheel gear with a lever-actuated drum brake, but without suspension. The cockpit can accommodate pilots up to {{convert|190|cm|in|1|abbr=on}} in height. The canopy provides 300° field of view and is jettisonable.

In 2003 the aircraft sold for US$33,000.

Operational history

In October 2011 there were 22 AC-5Ms registered with the US Federal Aviation Administration and one registered with Transport Canada. Because the aircraft was never type certified all American examples are in the Experimental - Racing/Exhibition category, while Canadian are in the Limited Category.{{Cite web|url = http://registry.faa.gov/aircraftinquiry/AcftRef_Results.aspx?Mfrtxt=&Modeltxt=AC-5M&PageNo=1|title = Make / Model Inquiry Results|accessdate = 5 October 2011|last = Federal Aviation Administration|authorlink = |date=October 2011}}{{Cite web|url=http://wwwapps.tc.gc.ca/Saf-Sec-Sur/2/CCARCS-RIACC/Menu.aspx |title=Canadian Civil Aircraft Register |accessdate=5 October 2011 |last=Transport Canada |authorlink= |date=October 2011 }}

Variants

File:AC-5Me KBDU.jpg

;AC-5M

:Single seat motor glider powered by a {{convert|19|kW|hp|0|abbr=on}} Zanzottera MZ-35R two-stroke powerplant.

;AC-5MP

:Unmanned aerial vehicle version powered by a {{convert|60|kW|hp|0|abbr=on}} Rotax 912UL four stroke powerplant mounted on a fixed, non-retractable pylon. This version mounts equipment for satellite navigation, radio remote control, TV monitoring and autonomous operation and was intended to operate at altitudes from {{convert|400|to|8000|m|ft|0|abbr=on}}.

;AC-5K

:Version of the 5M, but with a fixed {{convert|32.3|kW|hp|0|abbr=on}} Simonini Victor 1 engine and a retractable two-blade wooden propeller.{{Cite web|url = http://www.glider.ru/en/glider/solo-ac-5k|title = Single Motorglider AC-5K|accessdate = 7 October 2011|last = Glider Air Craft|authorlink = |date = n.d.|archive-url = https://web.archive.org/web/20111022234522/http://www.glider.ru/en/glider/solo-ac-5k|archive-date = 22 October 2011|url-status = dead}}

;AC-5Me

:American developed prototype electric propulsion variant powered by a 25 kW (33.5 hp) Rotex RET-60, MGM-Compro HBC-280120-3EI controller and proprietary 4.4 kWh battery pack incorporating 448 Molicel P-26A cells.{{Citation needed|date=December 2022}}

Specifications (AC-5M)

{{Aircraft specs

|ref=World Directory of Leisure Aviation 2003-04 and company

|prime units?=met

|genhide=

|crew=one

|capacity=

|length m=5.3

|length ft=

|length in=

|length note=

|span m=12.6

|span ft=

|span in=

|span note=

|height m=1.3

|height ft=

|height in=

|height note=

|wing area sqm=7.7

|wing area sqft=

|wing area note=

|aspect ratio=20.5:1

|airfoil=Wortmann FX60-157

|empty weight kg=180

|empty weight lb=

|empty weight note=

|gross weight kg=300

|gross weight lb=

|gross weight note=

|fuel capacity=

|more general=

|eng1 number=1

|eng1 name=Zanzottera MZ-35R

|eng1 type=

|eng1 kw=19

|eng1 hp=

|prop blade number=2

|prop name= retractable

|prop dia m=

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|max speed kmh=

|max speed mph=

|max speed kts=

|max speed note=

|cruise speed kmh=

|cruise speed mph=

|cruise speed kts=

|cruise speed note=

|stall speed kmh=75

|stall speed mph=

|stall speed kts=

|stall speed note=

|never exceed speed kmh=220

|never exceed speed mph=

|never exceed speed kts=

|never exceed speed note=

|range km=

|range miles=

|range nmi=

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|endurance=

|ceiling m=

|ceiling ft=

|ceiling note=

|g limits=+5.3/-2.65

|roll rate=

|glide ratio=35:1 at {{convert|102|km/h|mph|0|abbr=on}}

|climb rate ms=2.5

|climb rate ftmin=

|climb rate note=

|sink rate ms=0.855

|sink rate ftmin=

|sink rate note= at {{convert|95|km/h|mph|0|abbr=on}}

|lift to drag=

|wing loading kg/m2=39

|wing loading lb/sqft=

|wing loading note=

|more performance=

|avionics=

}}

See also

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References

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