- Design and development
- Operational history
- Specifications (Folkerts SK-1)
- See also
- References
name=SK-1 | image=Folkerts SK-1.tif | caption=Folkerts SK-1 }}{{Infobox Aircraft Type | type=Racing aircraft | national origin=United States of America | manufacturer=Mono-Aircraft Corp | designer=Clayton Folkerts | first flight= | introduced=1930 | retired= | status= | primary user= | more users= | produced= | number built=1 | program cost= | unit cost= | developed from= | variants with their own articles= }} |
The Folkerts SK-1,Speed King One, Mono Special, Matilda, Fordon-Neumann Special, Hardwick-Whittenbeck Special was a racer built for the 1930 American Cirrus Aircraft Engine Company sponsored American Cirrus Derby.[1] Design and developmentClayton Folkerts designed the "Mono Special" while working for the Mono-Aircraft Corporation. It was later renamed the SK-1.[2] The aircraft was a strut-braced mid-winged conventional geared aircraft with a slender tapered tail and undersized wheels and fairings. Operational historyIn 1930, for the American Cirrus Derby, pilot John Livingston was hired, but Stub Quimby flew in his place after an illness. The team did not win any earnings. In the 1930 National Air Races, Quimby placed fourth in the 650 Cubic inch class at 142 mph. In the 1933 American Air Races, the aircraft was renamed the Folkerts SK-1, with modified lift struts and addition of wheel pants. The aircraft won first place twice in the 350 cubic inch class, and third in the 500 cubic inch class piloted by Harold Neumann, and fifth piloted by Marcellus King.[3] During the 1933 International Air Races, Roy Ligget and Roy Hosler won two fifths and one fourth at a speed of 170 mph. In the 1934 Pan American Air Races, the aircraft was renamed "Matilda". In the 1935 National Air Races, with a modified headrest fairing, the aircraft raced as the "Fordon-Neumann Special" and placed second at 187 mph .[4] In the 1937 National Air Races, the aircraft raced as the "Hardwick-Whittenbeck Special" [2] Specifications (Folkerts SK-1){{Aircraft specs |ref=Sport Aviation |prime units?=kts |genhide= |crew= |capacity=1 |length m= |length ft= |length in= |length note= |span m= |span ft= |span in= |span note= |upper span m= |upper span ft= |upper span in= |upper span note= |mid span m= |mid span ft= |mid span in= |mid span note= |lower span m= |lower span ft= |lower span in= |lower span note= |swept m= |swept ft= |swept in= |swept note= |dia m= |dia ft= |dia in= |dia note= |width m= |width ft= |width in= |width note= |height m= |height ft= |height in= |height note= |wing area sqm= |wing area sqft= |wing area note= |swept area sqm= |swept area sqft= |swept area note= |volume m3= |volume ft3= |volume note= |aspect ratio= |airfoil= |empty weight kg= |empty weight lb= |empty weight note= |gross weight kg= |gross weight lb= |gross weight note= |max takeoff weight kg= |max takeoff weight lb= |max takeoff weight note= |fuel capacity= |lift kg= |lift lb= |lift note= |more general=
|eng1 number=1 |eng1 name=American Cirrus |eng1 type=310 cu in supercharged four cylinder in-line engine |eng1 kw= |eng1 hp=90 |eng1 kn= |eng1 lbf= |eng1 note= |power original= |thrust original= |eng1 kn-ab= |eng1 lbf-ab= |eng2 number= |eng2 name= |eng2 type= |eng2 kw= |eng2 hp= |eng2 kn= |eng2 lbf= |eng2 note= |eng2 kn-ab= |eng2 lbf-ab= |eng3 number= |eng3 name= |eng3 type= |eng3 kw= |eng3 hp= |eng3 kn= |eng3 lbf= |eng3 note= |eng3 kn-ab= |eng3 lbf-ab= |more power= |prop blade number= |prop name= |prop dia m= |prop dia ft= |prop dia in= |prop note= |rot number= |rot dia m= |rot dia ft= |rot dia in= |rot area sqm= |rot area sqft= |rot area note=
|perfhide= |max speed kmh= |max speed mph=187 |max speed kts= |max speed note= |max speed mach= |cruise speed kmh= |cruise speed mph= |cruise speed kts= |cruise speed note= |stall speed kmh= |stall speed mph= |stall speed kts= |stall speed note= |never exceed speed kmh= |never exceed speed mph= |never exceed speed kts= |never exceed speed note= |minimum control speed kmh= |minimum control speed mph= |minimum control speed kts= |minimum control speed note= |range km= |range miles= |range nmi= |range note= |combat range km= |combat range miles= |combat range nmi= |combat range note= |ferry range km= |ferry range miles= |ferry range nmi= |ferry range note= |endurance= |ceiling m= |ceiling ft= |ceiling note= |g limits= |roll rate= |glide ratio= |climb rate ms= |climb rate ftmin= |climb rate note= |time to altitude= |sink rate ms= |sink rate ftmin= |sink rate note= |lift to drag= |wing loading kg/m2 |wing loading lb/sqft= |wing loading note= |disk loading kg/m2= |disk loading lb/sqft= |disk loading note= |power/mass= |thrust/weight= |more performance= }}
See also{{aircontent |see also= |related=- Folkerts SK-2
- Folkerts SK-3
- Folkerts SK-4
|similar aircraft= |lists= }}References{{commons category|Folkerts aircraft}}- Notes
1. ^"National Air Races." airrace.com. Retrieved: May 31, 2011. 2. ^1 Sport Aviation, September 1958 3. ^Schmid and. Weaver 1983 {{Page needed|date=January 2012}} 4. ^Matowitz 2006 {{Page needed|date=January 2012}}
- Bibliography
{{refbegin}}- Foxworth, Thomas G. The Speed Seekers. New York: New York: Doubleday, 1976. {{ISBN|0-385-06050-5}}.
- Matowitz, Thomas G. Jr. Cleveland's National Air Races (Images of Aviation). Mount Pleasant, South Carolina: Arcadia Publishing, 2006. {{ISBN|978-0-7385-3996-6}}.
- Schmid, Sylvester H. and Truman C. Weaver. The Golden Age of Air Racing: 1927-1933. Oshkosh, Wisconsin: EAA Aviation Foundation, 1983. {{ISBN|978-0-8168-7816-1}}.
{{refend}} 4 : Racing aircraft|Mid-wing aircraft|Single-engined tractor aircraft|Aircraft first flown in 1930 |