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 Showing results 1 to 25 of 195 Search took 0.18 seconds. Search: Posts Made By: blackmail
 Forum: Tech Log 16th Nov 2015, 09:39 Replies: 11 Views: 2,192 Posted By blackmail Hello Pwmdk, 737-300 +winglet :span =... Hello Pwmdk, 737-300 +winglet :span = 31.11m(non winglet : span = 28.88m). Mac = 3.41m gross wing surface : S = 105.4m2 aspect ratio = span/mac or span2/S I let you do the math have a nice...
 6th Dec 2014, 10:44 Replies: 6 Views: 3,006 Posted By blackmail mach ? Hello Alex, there is a formula : EAS = 661xMxroot of greek letter delta delta= pressure ratio P/Po at fl100 P= 700hpa(see wx charts) at sea level Po=1013hpa 700/1013=0,69 => square root= 0,83...
 Forum: Tech Log 23rd Jun 2012, 07:34 Replies: 8 Views: 3,436 Posted By blackmail hello 172 driver, you correct the V1mcg, not the... hello 172 driver, you correct the V1mcg, not the normal V1. there is a note in the preamble stating that V1mcg tables are conservative figures for all weight & bleed configurations. so I suppose the...
 Forum: Tech Log 19th Apr 2011, 10:51 Replies: 17 Views: 3,108 Posted By blackmail supersonic aerodynamics JD, it might be the formula of Raleigh for supersonic speeds : Pt-p/p =[ 166,92158M^7/(7M^2-1)^2,5]:cool: -1 Pt = Total Air Pressure p = Static Air Pressure M^7 = Mach to the power 7 M^2...
 Forum: Questions 17th Jan 2011, 11:02 Replies: 3 Views: 929 Posted By blackmail green laser hello every one, there is one(green laser), low sweeping the runway at night at Beauvais, Tille, lfob, bva, for birdscaring. bm.
 Forum: Tech Log 4th Oct 2010, 18:34 Replies: 6 Views: 5,721 Posted By blackmail twin otter aft fuel tank hello firestorm, good remark about the "holes" of phu & his flapper valves. but i thinks the "holes" makes sense as it ensures a fuel feed to the collector tank(cell 5) from the other cells. assume...
 Forum: Tech Log 4th Oct 2010, 16:28 Replies: 6 Views: 5,721 Posted By blackmail twin otter aft fuel tank hello phu, the short answer is : pitching moments, gravity & fuel sloshing. the fuel tanks of the twin otter are mounted in tandem in the fuselage & have pitching moments around the center of...
 Forum: Tech Log 9th Sep 2010, 10:48 Replies: 4 Views: 4,970 Posted By blackmail aircraft categories hello all, B737-800 is normally cat C aircraft, so cat C minimas apply, except for a circling approach single engine(avoid this, if at all possible), where cat D minimas apply due to higher Vref...
 Forum: Tech Log 7th Sep 2010, 18:54 Replies: 10 Views: 1,685 Posted By blackmail ATPL perfo hello all, checking all the different opinions & theories, all correct, there seems to be no consensus on what is the correct answer to this question. so let's analyse two different scenarios : 1)...
 Forum: Tech Log 21st Aug 2010, 18:43 Replies: 19 Views: 4,333 Posted By blackmail b738 pressure robin, it would help, if you try to write correct english, given or taken a few typo's, :rolleyes: bm,
 Forum: Tech Log 21st Aug 2010, 11:18 Replies: 19 Views: 4,333 Posted By blackmail b738 pressure robin, for the last time : flight altitude(not "land" altitude) set on the pressurzation panel, should never be lower than actual flt altitude. if it is, the delta pressure will eventually go up to...
 Forum: Tech Log 21st Aug 2010, 05:27 Replies: 19 Views: 4,333 Posted By blackmail b737 presurization robin, it was not. 1) it was not in the QRH. 2) a flight altitude equal to actual altitude would be ok to avoid the unscheduled pressurization caution light, when initiating a descent, but not lower...
 Forum: Tech Log 20th Aug 2010, 20:29 Replies: 19 Views: 4,333 Posted By blackmail b737 presurization robin, if you stop the climb of the aircraft, the cabin altitude stops climbing & the delta pressures stops as well. bm
 Forum: Tech Log 18th Aug 2010, 21:03 Replies: 19 Views: 4,333 Posted By blackmail b737 presurization hello housecarl, i would suggest : 1) follow QRH & don't invent new or home made procedures. 2) maybe i'm missing something, but i would think the flight altitude on the pressurization panel should...
 Forum: Tech Log 15th Jul 2010, 10:52 Replies: 9 Views: 5,166 Posted By blackmail Tat & Rat Hello Studentpilot, to complete above posts good replies, see following formulae : assume r = Ram recovery factor, with r equal or less than one(1). Temperatures (Tt & T) are absolute...
 Forum: Tech Log 21st Apr 2010, 09:16 Replies: 10 Views: 2,018 Posted By blackmail ceilings hello agus, keep it simple : any powered aircraft has amongst other things : wings(2) & engine(s), so you have a max. altitude for the wings(aerodynamic ceiling) & a max. altitude for the...
 Forum: Questions 19th Apr 2010, 20:08 Replies: 5 Views: 9,252 Posted By blackmail B738 sweep hello agus, sweep angle is all about performance compromise. increase in sweep angle, increases Mach critical(sonic point on the wing) so allowing increased cruise Mach numbers but the downside is...
 Forum: Tech Log 28th Jan 2010, 16:20 Replies: 12 Views: 14,697 Posted By blackmail cold wx altimeter corrections hello all, correction rule for cold wx is : 4 FEET per °C isa deviation per 1000ft OR 1% per 2.5°C isa deviation, both rules give same result. take FL180 & isa - 10°C gives 4ft x 10 x 18 = 720ft or...
 Forum: Questions 14th Jan 2010, 12:22 Replies: 7 Views: 2,001 Posted By blackmail flight planning itopalov : jepp charts not maps ! bm.:rolleyes:
 Forum: Tech Log 6th Jan 2010, 08:16 Replies: 15 Views: 2,966 Posted By blackmail bypass ratio hello all, the bypass ratio, because it is a ratio or a fraction, by definition has no units. eg. a bypass ratio(called the greek letter of lambda) of 8, means that for 1 unit of air going through...
 Forum: Tech Log 17th Dec 2009, 07:30 Replies: 14 Views: 3,742 Posted By blackmail b737ng fmc hello all, maybe the answer lies in Mr. boeing fcom vol 2. page 11.43.3, april 24, 2009. descent page. quote : "Speed restrictions (spd rest) : displays the most restrictive of the following...
 Forum: Tech Log 11th Nov 2009, 14:17 Replies: 2 Views: 2,436 Posted By blackmail acn/pcn hello all, nope, jepp is correct, but look the info up in airport directory, greetings, bm:):)
 Forum: Tech Log 5th Jun 2009, 15:00 Replies: 4,594 Views: 2,709,740 Posted By blackmail AF447 c.tocross, 4 minutes. bm.
 Forum: Tech Log 24th Feb 2009, 14:50 Replies: 8 Views: 1,305 Posted By blackmail V1 & N-1 hello every one, "N-1" is just an old french arithmetic terminology to indicate an engine failure : N=nombre(total number of) de moteurs (engines) "-"=moins(minus) 1(one)moteur (engine). eg a...
 Forum: Tech Log 7th Feb 2009, 21:35 Replies: 35 Views: 6,491 Posted By blackmail cat2&3 hello, in one of our airfield briefings we have, quote : "during LVP(Low Visibility Procedures), ATIS/TWR will report either cat2 or cat3 in operation according to limiting weather at the time,...
 Showing results 1 to 25 of 195

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