| 词条 | Hill Tetra-15 | |||||||||||||||||||
| 释义 |
The Tetra-15 is an American mid-wing, single-seat, kit-built glider that was designed by Bob Kuykendall, Steve Smith, and Brad Hill, and built primarily by Brad Hill, Bob Kuykendall, and Doug Gray.{{Citation needed|date=December 2016}} Design and developmentThe Tetra-15 is the first aircraft produced from the tools and development of the HP-24 project, a project to develop and manufacture a high-performance sailplane in kit form.{{Citation needed|date=December 2016}} The aircraft is predominantly made from carbon fiber. The wings have airfoils from the FX81 family of profiles. The wing spars use pultruded carbon fiber ribbons in the upper and lower caps. Glide path control is via mechanically actuated Schempp-Hirth style airbrakes. All wing and tail controls are automatically connecting. The retractable undercarriage is likewise manually actuated.{{Citation needed|date=December 2016}} Operational historyThe Tetra-15 first flew on Friday 27 January 2012.{{Citation needed|date=December 2016}} By December 2016 one example had been registered in the United States with the Federal Aviation Administration.[1] Specifications{{Aircraft specs|prime units?=imp |crew=one |capacity= |length m=6.98 |length ft=22.9 |length in= |length note= |span m=15 |span ft=49.2 |span in= |span note= |height m= |height ft= |height in= |height note= |wing area sqm=10.02 |wing area sqft=107 |wing area note= |aspect ratio=23 |airfoil=Wortmann FX81 |empty weight kg= |empty weight lb=480 |empty weight note= |gross weight kg= |gross weight lb=750 |gross weight note= |more general= Performance |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= |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= |g limits= |roll rate= |glide ratio= |sink rate ms= |sink rate ftmin= |sink rate note= |lift to drag= |wing loading kg/m2= |wing loading lb/sqft= |wing loading note= |more performance= |avionics= }} See also{{aircontent|see also= |related= |similar aircraft= |lists=
}} References1. ^{{cite web|url = http://registry.faa.gov/aircraftinquiry/AcftRef_Results.aspx?Mfrtxt=&Modeltxt=TETRA-15&PageNo=1|title = Make / Model Inquiry Results|accessdate = 1 December 2016|last = Federal Aviation Administration|date = 1 December 2016}} 2 : United States sailplanes|Homebuilt aircraft |
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