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About lee-wave

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    ULD Calypso
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  1. Weather radar is not a perfect answer to bad weather avoidance.....it is a known fact that wet snow and rain show up better then dry hailstones. I don't think there is a single pilot who would knowingly fly into a severe storm. These situations will continue to occur and maybe increase as the climate moves into ever increasing turmoil....
  2. I quickly checked in my log book dating back to 1970...it appears I have not killed any of my students...although there were quite a few that I made puke up.... 'not even a bootlace 2'....
  3. It would be equally stupid to say that the gliding experience of the pilots involved in the abovementioned emergencies had no part to play in the successful outcome.....
  4. The only way you can gain a real increase in performance without modification or weight increase is to put on a more efficient propellor. Fitting a 60X40 in place of a 60X42 results in static revs increasing from roughly 2670rpm to 2890rpm which is equivalent to a 7 % increase in horsepower (I think the maths is right) .Certainly the take off performance is blistering... but the offside is there is a reduction in cruise speed ...
  5. Just downloaded the SafeSky app .... looks very interesting...
  6. My 2200 hydraulic motor also starts instantly but if there was the slightest move with the throttle or choke it would stop. If your idle is set a fraction too high using the mechanical stops then the motor may display stopping after starting. Try lowering the idle a little and keep the throttle hard closed for at least 30 seconds after starting and also don't touch the fully opened choke for the same period of time....
  7. In powered aircraft the throttle controls your rate of descent and the elevators control your airspeed. In a glider the airbrakes control the rate of descent, elevators control airspeed. Instructors will normally teach students to arrive at base leg in an overshoot situation with airbrakes about half open. On final the aiming point (not the touchdown point) is kept stationery on a point on the canopy using airbrakes. Airspeed is controlled using the elevators. Your eyes remain on the aiming point until round out when you then look up to the far end of the strip. Using peripheral vis
  8. I have to qualify my previous comment.....every object on the surface of our planet is subject to 1 g so my estimation of a max of 2 g that the weight of the snow produced is inclusive of the gravitational acceleration constant.
  9. The factory built ULD is rated at +8 -3.5 g. I reckon the weight of snow would have applied < - 1.5g maybe 2 g max. Question.. why, in most aircraft, is the positive g limits greater then the negative g limits ?
  10. just adding my pennyworth.......a stall, spin or spiral dive characteristics in any aircraft today may be entirely different tomorrow....depending on aircraft loading / CG, more fuel in one tank then the other and of course the currency of the pilot flying it.
  11. Beat you there... I graduated top 100% of primary school students in Fiji and studied a little bit of basket weaving...
  12. You come across two identical objects in deep space. One is filled with duck feathers the other is full of Osmium (twice the weight of lead). How would you determine which one was the feather filled object and vice versa without touching it ? in other words which object had the greater mass ?
  13. The latest government guidelines to the resumption of GA. With luck should be back in the air by early April.... https://www.gov.uk/government/publications/coronavirus-covid-19-general-aviation/coronavirus-covid-19-general-aviation
  14. Your thinking of Ken Wallis of autogyro fame ..... Barnes Wallis was the Wellington bomber (geodetic), bouncing bomb (dambusters), tallboy bomb (Tirpitz) designer.
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