So Many Tufts - Stall Tests @ First Flap Deployment - Flt 6 - Hakan's Modified Lancair 320 скачать в хорошем качестве

So Many Tufts - Stall Tests @ First Flap Deployment - Flt 6 - Hakan's Modified Lancair 320

Warning this is a long video. After so much build-up we finally deployed the new custom flaps on Hakan's modified Lancair 320. The results are surprising. See you in the comment section. Thank you for coming along with Wasabi Flight Test. Website: www.wasabiaero.com Patreon: www.patreon.com/ElliotSeguin Tshirts and More preferredaltitude.com/collections/wasabi-air-racing Instagram: www.instagram.com/edseguin/ Facebook: www.facebook.com/WasabiAirRacing/notifications/ Sponsors: Method Seven Eyewear: https://methodseven.com/ Butler Parachute: https://www.butlerparachutes.com/ Timestamps: 01:08 Program Recap 02:10 Hakan's program description 04:22 Flap Inspection 06:07 Aileron Trim 06:36 Three biggest risks 10:16 Flap Indication 11:14 MX Performed 15:04 Preflight Beifing 25:45 Pushout 26:09 Camera placement tufts overview 27:25 Flt 6 first attempt 28:35 Propeller diagnostic 31:57 Flt 6 35:34 Flaps 10 40:49 Flap up stall check 42:24 Flaps 10 2nd check 43:34 Flaps 15 45:30 Flaps 20 46:48 Flaps 25 51:59 Flaps 30 53:50 Flaps 35 57:17 Post Flight Debrief --Flt 006 Flight Report-- Summary     Flt Date 10/23/2020     Engine Start: 2:34 LCL     Engine Shutdown: 3:28 LCL     Flt Time: 0.9 HRS     Landings: 1     Fuel State Takeoff: Full Tanks     Total Time After Flight: 3.6 Hrs     Chase: None Data: First attempt to fly was stopped by a jammed propeller governor lever. We decided the problem was a drop of gasket seal that fell on the shaft of the lever. During the inspection the seatback was removed to make more clearance for the parachute. This was a much better cockpit configuration. For the actual flight the engine started well and sounded healthy, we believe this was the induction work that Hakan performed. The engined reved to the new governor setting of 2800 on takeoff and the acceleration difference was noted on the ground and in the cockpit. The data portion of the flight was flown between 9-10,000' MSL. The pattern was: at 90 KIAS change flap position, note trim change, accelerate to VFE (100 KIAS) handling check, trim change check. Slow deceleration to a handling/trim check just above stall speed. Alternate static check found no change in altimeter reading with valve actuation. The flaps were checked at 10°, 0°, 10°, 15°, 20°, 25°, 25°, 30°, 35°. There was a small pitch trim change with the extension of the flaps, the trim was at the up stop, but the stick position change was very small. Wind up in the flap deployment mechanism was noticeable and it would take some time for the flaps to settle after being deployed. The stall speed did not appreciably change in the range of flap configurations checked. While the bleed rate was not 100% repeatable between stalls this was not expected. It appears that the stall is driven by a loss of control power (large separation on elevator) rather than a stall of the wing, but there is a large separation forming on the wing at this same time. The flap does not appear to separate during any of the stalls. We knocked off at 35° to check the tail video for risk of tail stall. Power Settings:     Take Off WOT/2700     Climb WOT/2500     Cruise WOT/2500 Limits/Speeds: CHT Limit - 440°F Climb 420°F Cruise Oil Temp  - 215°F 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) Bailout altitude: Out of control below 5,000 50% of control remaining RTB If we can't fly at or below 150 KIAS at 1.5 G with more than 10% of control remaining, bail out. Maintenance Before Flight #1 inlet runner cleanup (gasket, mating face) Replaced prop cable Increased elevator trim tab up throw Adjusted prop governor to 2800 New neoprene socks for the inlet Transponder antenna service External heat barrier on the belly Ignition CHT probe moved from #3 to #2 Filled fuel Flap indication added Ailerons trimmed for flap clearance   Planned Flight Profile     Engine Start     Take Off     Initial climb 100 KIAS     First Power Reduction WOT/2500     Climb to '10K MSL Check alternate static Flaps 10° at 90 KIAS Handling/Trim check Accel to VFE, 100 KIAS Flaps 15° at 90 KIAS Handling/Trim check Accel to VFE, 100 KIAS Flaps 20° at 90 KIAS Handling/Trim check Accel to VFE, 100 KIAS Flaps 25° at 90 KIAS Handling/Trim check Accel to VFE, 100 KIAS     RTB     Normal approach     Flaps up landing (110 KIAS)  Squawks: Recommend different engine monitor with more display area Recommend different airspeed indicator w/ only knots Mode C inop 2800 RPM prop governor setting Min speed not changing with flap deployment Next Steps:    Continued flap testing to 45°. Expand slow side of the envelope. --End of report--