PPRuNe Forums - View Single Post - Aircraft lands in Cheltenham garden
View Single Post
Old 11th Jun 2013, 21:31
  #348 (permalink)  
sdbeach
 
Join Date: Dec 2008
Location: San Diego, CA, USA
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Bristol1965
Rick,

Thanks for the information you have been posting. Interesting details and they do make sense.
Good to know.
Originally Posted by Bristol1965
Minor point if I may ask, I was under impression that the descend speed for SR20 and SR22 upto and including G3 is about 6 meter a seconds or about 14 miles. Of course this is at full weight, so if the aircraft is lightly loaded, it will descend at lower rate. Still this is a minor point.
Have never heard of a rate in meter/second, so I dunno.

What I do know is that recorded data of a moderately loaded SR22 shows a descent of 1700 fpm or 17 knots or 20 mph. That's 8.636 m/s, for what that's worth.

Interesting engineering tidbit: the parachute opens faster when deployed at higher airspeeds and slower when going slower. So the initial deceleration can be quite high. The Horton, UK parachute pull was at 187 KIAS and the recorded data showed two seconds of negative 4 G deceleration. Cinch those seatbelts tight and low across your hips!

Cheers
Rick
sdbeach is offline