Flaps 45, Trailing Cone, Tufts - Flt 7 - Hakan's Modified Lancair 320 скачать в хорошем качестве

Flaps 45, Trailing Cone, Tufts - Flt 7 - Hakan's Modified Lancair 320

Full flaps and two methods of pitot static calibration. So stoked to use the #jellybeanthorp trailing cone again. Hakan pulled out all the stops, I think you'll dig. See you in the comment section. Website: https://www.wasabiaero.com Patreon:   / elliotseguin   Tshirts and More https://preferredaltitude.com/collect... Instagram:   / edseguin   Facebook:   / notifications   Sponsors: Method Seven Eyewear: https://methodseven.com/ Butler Parachute: https://www.butlerparachutes.com/ Timestamps: 00:32 Introduction 01:03 Mx Performed 14:09 Trailing Cone Installation 16:04 Preflight Briefing 24:45 Trailing Cone Ground Operations 29:10 45° Flap Envelope Expansion 32:24 Stall Matrix 49:29 Post Flight Debrief 58:59 Hakan Debriefing Stall Video (best part of this video) ---Flt 007 Flight Report--- Summary: Flt Date 12/5/2020 Engine Start: 10:20 LCL Engine Shutdown: 12:35 LCL Flt Time: 1.3 HRS Landings: 1 Fuel State Takeoff: Full Tanks Total Time After Flight: 4.9 Hrs Chase: None Data: My initial impression is that the difference in drag between 35° and 45° flaps is the most significant change. The aircraft handles nicely during a full flap stall with plenty of roll control and little tendency to drop a wing. The elevator position/force difference for flt 7 vs flt 6 was significant, likely due to the VGs added to the wing and tail. It took more elevator deflection to stall, and there wasn't the significant force change during the stall that was observed on flt 6. Worth noting, the flaps up stall is now the limiting stall. The trailing cone showed little difference vs the ship static (stock location) in all configurations tested. The biggest difference was in the last 5 knots of the stall, during which the ship static would show an airspeed increase (~5 knots) while the airplane was still slowing, and the trailing cone showed a steady reduction in airspeed. The GPS clover leaf showed an error (12% clean, 15% 35° flap, 20% 45° flap) at 1.2 VS, with the indicated speed being higher than the GPS calibration speed. Based on Hakan's CFD, he believes this can mostly be traced to pitot error due to high AOA. On landing at 110 KIAS (as all previous landings) the difference in actual speed was apparent. Estimate the airplane was 15 knots faster than previous landings (recommend future approaches at 95 KIAS) Power Settings Take Off WOT/2700 Climb WOT/2500 Cruise WOT/2500 CHT Limit - 440°F Climb 420°F Cruise Oil Temp - 215°F Airspeed VS0 - 57 KIAS (52 KCAS) VS - 77 KIAS (70 KCAS) Vrot - 83 KIAS (75 KCAS) VFE - 110 KIAS (100 KCAS) VLE - 134 KIAS (122 KCAS) VA - 157 KIAS (143 KCAS) VNE - 259 KIAS (235 KCAS) LLF - +3.8g/-1.52g (flaps up) +2.0g (Flaps Down) Maintenance Before Flight Aileron VGs Wing Body VGs More Tufting (Wing, Fuselage, H-Stab) Static location back to stock Transponder Replaced Altitude Encoder Replaced Added Aileron Bottom Gap Seals Replaced Aileron Top Seal Canopy Seal Replaced Static Overhaul New Alternate Static Valve Inspected Flaps Serviced Fuel Added Trailing Cone to the alternate static port Planned Flight Profile Engine Start Take Off Initial climb 100 KIAS First Power Reduction WOT/2500 Climb 125 KIAS to '10.5K MSL 45° Flap Extension at 90 KIAS HQ CHK 45° to 100 KIAS HQ Chk 45° to VSO, HQ Chk 3x Flaps up-Gear Down Stalls (Ship Static) 3x Flaps up-Gear Down Stalls (Cone Static) 3x Flaps 35°-Gear Down Stalls (Ship Static) 3x Flaps 35°-Gear Down Stalls (Cone Static) 3x Flaps 45°-Gear Down Stalls (Ship Static) 3x Flaps 45°-Gear Down Stalls (Cone Static) GPS Cloverleaf at 1.3 VS GPS Cloverleaf at 1.3 VS35° GPS Cloverleaf at 1.3 VS0 RTB Normal approach Flaps up landing (110 KIAS) Bailout altitude: Out of control below 5,000 If less than 50% of control remaining RTB If we can't fly at or below 120 KIAS with more than 10% of control remaining, bail out. Squawks: Recommend different engine monitor with more display area Recommend different airspeed indicator w/ only knots Recommend different airspeed indicator ~40 Knots Brakes Soft 2800 RPM prop governor setting Idle 1,000-1,200 RPM Throttle/Mixture moves with gear retraction Running Rough? Left Elevator Gap Seal came off Cylinder #4 the hottest (410°F Peak) Next Steps: Consider new static location adequate, remove trailing cone. Consider slow-speed handling and minimum speed adequate until verified with landing tests. Need to understand the cruise speed performance hit with the VGs, and consider removing these devices until the correct balance of high and low-speed performance is reached.