Guest Posted October 31, 2014 Share Posted October 31, 2014 I have had an idea, that depending on response I will or will not roll with I will post a question every day (give or take a day for whatever reason may pop up) so that people can answer it / chat about it. All of the questions are CAA approved and I have the official answers. From the ££££'s worth of study books I had to buy for my heli ticket. Its a bit of fun and posting a wrong answer is by no means shameful and the following comments and answers will assist all I will post the actual answer the following day at the same time as the new question of the day. Remember you can subscribe to this thread so that you get an email when its updated. So here is todays question: The second layer of atmosphere is called the _______________ and the boundary between it and the troposphere is called the___________________ Answers, comment below. SW Quote Link to comment Share on other sites More sharing options...
ScoobySnacks Posted October 31, 2014 Share Posted October 31, 2014 The second layer of atmosphere is called the stratosphere and the boundary between it and the troposphere is called the tropopause. Quote Link to comment Share on other sites More sharing options...
Steve Posted October 31, 2014 Share Posted October 31, 2014 (edited) Nice idea. The answer is: 1 - Stratosphere 2 - Tropopause (where the atmosphere gets hot flushes and complains a lot). Edited October 31, 2014 by Guest Quote Link to comment Share on other sites More sharing options...
Badger Posted October 31, 2014 Share Posted October 31, 2014 Great Idea, keeps people on their toes and even if you don't know the answer it makes you look them up and that's not a bad thing either The second layer of atmosphere is called the Stratosphere and the boundary between it and the troposphere is called the .... Couldn't answer without looking it up & I'm not going to cheat Badger Quote Link to comment Share on other sites More sharing options...
daneellard Posted October 31, 2014 Share Posted October 31, 2014 What Stevie & ScoobySnacks said . . . I knew before reading them anyway . . . . . honest . . . . believe me I am a ??? Quote Link to comment Share on other sites More sharing options...
ganers Posted October 31, 2014 Share Posted October 31, 2014 Got the stratosphere but not the tropopause. Quote Link to comment Share on other sites More sharing options...
Guest Posted November 1, 2014 Share Posted November 1, 2014 Well done to those who got it 1 - Stratosphere 2 - Tropopause Today's question is another met one: If the moisture content of a parcel of air is such that it's due point temperature is +7c at what height above the ground would it's base likely form if the surface air was 22c SW Quote Link to comment Share on other sites More sharing options...
Quinoxyfen Posted November 1, 2014 Share Posted November 1, 2014 (edited) 1500m? A dry lapse rate of 10°C/km (5.5°F/1,000 ft) is often used to calculate temperature changes in air not at 100% relative humidity 22-7=15. 1C per 100m =1500m, 4921ft 3 1/8in Edited November 1, 2014 by Guest Quote Link to comment Share on other sites More sharing options...
Steve Posted November 1, 2014 Share Posted November 1, 2014 About 6000' AGL. Quote Link to comment Share on other sites More sharing options...
ScoobySnacks Posted November 1, 2014 Share Posted November 1, 2014 Ok, taking the standard dry adiabatic lapse rate of 3 degrees per thousand feet, and given the normal decrease of dew point of approximately 0.5°C over the same interval, the difference between ambient temperature and dew point decreases by approximately 2.5°C every thousand feet. So the cloud base should be at ((ground temp-dew point)/2.5)*1000) giving us ((22-7)/2.5)*1000=6000 feet. Quote Link to comment Share on other sites More sharing options...
Guest Posted November 1, 2014 Share Posted November 1, 2014 No one has this perfectly correct yet! I must admit, it's a bit of a brain fry! lol SW Quote Link to comment Share on other sites More sharing options...
Steve Posted November 1, 2014 Share Posted November 1, 2014 Scooby's method is correct isn't it? There's also a quickie method of difference between DP and air temp multiplied by 400 which brings out the same result (6000). Quote Link to comment Share on other sites More sharing options...
Guest Posted November 1, 2014 Share Posted November 1, 2014 Answer will be given tomorrow. Please do keep discussing and trying. :-) This is ace! SW Quote Link to comment Share on other sites More sharing options...
Steve Posted November 1, 2014 Share Posted November 1, 2014 I'm baffled, I've re-read the question a few times and can't find a trick element. The calculation will always be approximate but I doubt that's what's being missed here. Looking forward to seeing where we went wrong. Quote Link to comment Share on other sites More sharing options...
Guest Posted November 1, 2014 Share Posted November 1, 2014 I almost cant wait until tomorrow As a clue, the above calculation is over complicated to get what is the CAA's correct answer for PPL. SW Quote Link to comment Share on other sites More sharing options...
ScoobySnacks Posted November 1, 2014 Share Posted November 1, 2014 So is the caa answer 7500ft? Quote Link to comment Share on other sites More sharing options...
Steve Posted November 1, 2014 Share Posted November 1, 2014 Is the correct answer to log into RASP? Quote Link to comment Share on other sites More sharing options...
ganers Posted November 1, 2014 Share Posted November 1, 2014 I've phoned a friend and he doesn't know! Can I ask the audience and take my 50/50? Quote Link to comment Share on other sites More sharing options...
paulg18 Posted November 1, 2014 Share Posted November 1, 2014 I reckon it would be 5000ft Quote Link to comment Share on other sites More sharing options...
daneellard Posted November 1, 2014 Share Posted November 1, 2014 5,000ft init? Quote Link to comment Share on other sites More sharing options...
Guest Posted November 2, 2014 Share Posted November 2, 2014 The correct answer for question 2 is: 5000ft The calculation is: 22-7=15/3=5x1000=5000ft. WELL DONE TO ALL Todays question 3 is an Airlaw question: Non-urgent information is distributed to Pilots as an ________________Circular. And those directly related with air safety are printed on ___________ paper. SW Quote Link to comment Share on other sites More sharing options...
Guest Posted November 2, 2014 Share Posted November 2, 2014 I have made the above question a little simpler by filling in the last word of the first answer. SW Quote Link to comment Share on other sites More sharing options...
ScoobySnacks Posted November 2, 2014 Share Posted November 2, 2014 Interesting, so it uses the dry adiabatic lapse rate with no correction for the dew point changing with altitude. Air law, my least favourite! Non-urgent information is distributed to Pilots as an AIC (Aeronautical Information Circular) And those directly related with air safety are printed on pink paper. Quote Link to comment Share on other sites More sharing options...
Guest Posted November 3, 2014 Share Posted November 3, 2014 The correct answer for yesterday is: Aeronautical Information Circular, and Pink. Here is a link for further information and where to find the AIC's http://www.nats-uk.ead-it.com/public/in ... id=17.html Today's question is another air law one: If two aircraft in flight are well separated but on a collision course, the aircraft with the other on it's Right should do what? SW Quote Link to comment Share on other sites More sharing options...
alan_k Posted November 3, 2014 Share Posted November 3, 2014 Give way, but with a smile (well you are in a paramotor after all). Alan Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.