{"id":1946,"date":"2015-10-01T16:09:51","date_gmt":"2015-10-01T14:09:51","guid":{"rendered":"http:\/\/balloon.hu\/new\/?p=1946"},"modified":"2015-10-01T16:09:51","modified_gmt":"2015-10-01T14:09:51","slug":"do-you-know-the-standard-marker-falling-speed","status":"publish","type":"post","link":"https:\/\/balloon.hu\/new\/2015\/10\/01\/do-you-know-the-standard-marker-falling-speed\/","title":{"rendered":"Do you know the standard marker falling speed?"},"content":{"rendered":"<div class=\"137117dde994ef920366dbf34e4e7cff\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script type=\"text\/javascript\"><!--\r\ngoogle_ad_client = \"ca-pub-2865779868887008\";\r\n\/* Android box *\/\r\ngoogle_ad_slot = \"1345074415\";\r\ngoogle_ad_width = 336;\r\ngoogle_ad_height = 280;\r\n\/\/-->\r\n<\/script>\r\n<script type=\"text\/javascript\"\r\nsrc=\"http:\/\/pagead2.googlesyndication.com\/pagead\/show_ads.js\">\r\n<\/script>\n<\/div>\n<p>Only 25% of the answer was right. Not a very good result&#8230;<\/p>\n<p>In 1977 Bruce Comstock found marker speed to be 3000 ft\/minute.<\/p>\n<p>&#8220;Soon we were timing the fall of scoring markers from our balloons. We discovered that a standard marker fell about 3,000 feet per minute. I then built the first drop sight&#8211; two pieces of rigid quarter-inch plastic sheet hinged together. One piece included level sight tubes so it could be kept level. The other could be set to a downward angle according to a scale calibrated in miles per hour of average wind speed. In flight I would set the wind speed on the scale and then sight along the tilted piece until the target was in line with it, at which point I would release the drop marker. This worked, but the device was big and clumsy. Not long after, David designed and built two beautiful pistol-shaped, varnished hardwood drop sights with level sight tubes and wind speed scales. I made a padded &#8220;holster&#8221; for mine, which I tied into the inside of my basket, ready to use. I used this drop sight for the rest of the years I competed. No single tool wins balloon competitions, but I am sure this drop sight got me points when I needed to use it.&#8221;<br \/>\n<em>Comstock, Bruce (2013-10-23). A Life in the Air (Kindle Locations 1189-1195). Willow Press.<\/em><\/p><!--CusAds0-->\n<p>&#8220;I just studied my archives and found a marker drop altitude&amp;time table written by myself. It is based on marker falling speed of 3000 ft\/min. Time of writing: 1985-1987.<\/p>\n<p>Same as reported by Comstock.&#8221;<\/p>\n<p><em>Risto Jalava<\/em><\/p>\n<p>[socialpoll id=&#8221;2298035&#8243;]<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Only 25% of the answer was right. Not a very good result&#8230; In 1977 Bruce Comstock found marker speed to be 3000 ft\/minute. &#8220;Soon we were timing the fall of scoring markers from our balloons. We discovered that a standard marker fell about 3,000 feet per minute. I then built the first drop sight&#8211; two [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17,20],"tags":[103,137,170,183],"_links":{"self":[{"href":"https:\/\/balloon.hu\/new\/wp-json\/wp\/v2\/posts\/1946"}],"collection":[{"href":"https:\/\/balloon.hu\/new\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/balloon.hu\/new\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/balloon.hu\/new\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/balloon.hu\/new\/wp-json\/wp\/v2\/comments?post=1946"}],"version-history":[{"count":0,"href":"https:\/\/balloon.hu\/new\/wp-json\/wp\/v2\/posts\/1946\/revisions"}],"wp:attachment":[{"href":"https:\/\/balloon.hu\/new\/wp-json\/wp\/v2\/media?parent=1946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/balloon.hu\/new\/wp-json\/wp\/v2\/categories?post=1946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/balloon.hu\/new\/wp-json\/wp\/v2\/tags?post=1946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}