As I understand it, the bow-wake from the wide body aircraft [C-5, C-17, KC-10, etc] moving into position behind the tanker has a noticeable stability effect on the tanker when the flying-boom and probe system is coming in/out of contact. To a degree, this is why hose/drogue/prove system is popular ...Jump to post
NOTES. All original production C-5As are retired due to age/time. Most second production run C-5Bs [upgraded to E's?] are current active fleet. I heard that a CMsgt was killed when he stood at the crew entry door and opened the door before FULL depressurization. There was only a ~1/10th-PSI [or so] ...Jump to post
BBC News... https://www.bbc.com/news/world-latin-america-50752686
AP News... https://apnews.com/cd153ebd1229d7a79fdbcc0a56f08a35
ABC News... https://abcnews.go.com/International/de ... d=67680422
CBS News... Chile air force plane found off tip of South America along with human remains
https://www.cbsnews.com/news/chile-plan ... 019-12-12/
RE Apollo 15 parachute failure... mishap report: https://sma.nasa.gov/SignificantInciden ... ailure.pdfJump to post
My 2cents... The long-duration dinitrogen tetroxide propellant 'plume' from the crashed service module was very unnerving. Assuming this was not a wholesale pad abort... and that booster failure occurred later-in-flight, at higher altitude over water, this should not be a problem/issue... Oddly.. th...Jump to post
A few articles from relatively creditable news and Defense sources are now emerging on this subject.. Did U.S. Missile Defenses Fail During Saudi Oil Attack? https://nationalinterest.org/blog/buzz/did-us-missile-defenses-fail-during-saudi-oil-attack-81171 How drone attacks reveal fixable flaws with ...Jump to post
What is astonishing and maddening is that Saudi surveillance and air defenses appear to have been 'asleep at the wheel'. I cannot understand why such a high value facility was not protected from 'drone strikes'. The Saudi Air Force and Army, with super-sophisticated surveillance radars/sensors and a...Jump to post
7000-mph at any altitude, with exception of very short duration, within the atmosphere will result in catastrophic aero-friction heating. Nike Sprint ABM Missile accelerated at ~100G and attained such a high velocity [less than 7000-mph] at low altitude that the intercept vehicle became 'white-hot' ...Jump to post
Care to elaborate?
Phase of flight?
You deserve to get what You ask for... if You don't ask for very much, don't expect to get much. ASK CAEFULLY [in detail].
Tugger... IF inspecting and/or recycling, then let the 1st stage parachute into the ocean and pop-open flotation bags for water-recovery. Speculation... Adding light-weight grid-fins [and/or] controllable speed-brakes [petals] [and/or] hypersonic 'ballute(s)' to the upper end of the stage would prov...Jump to post
A few quotes/thoughts on this subject... In a 'fair fight' the odds suck...never fight fair. Semi/full-auto weapons with high capacity magazines, change the odds in-in-fight overwhelmingly in-favor-of the aggressor. See quote 1. 'Bad guys' always have the advantage of time-place-surprise-weaponry-ta...Jump to post
Turkish Aerospace Industries is starting development on an indigenously designed/manufactured stealth fighter... I guess this will light-the-fire' under development to 'git-er-done'.
https://www.airforce-technology.com/pro ... h-fighter/
One element of climate change not well understood is the changes in relative humidity [RH]. In the US western tiers of states, lower year-round rainfall is desiccating vegetation that becomes 'tinder' for wild-fires. Not to mention that many places will be far-less habitable with lower rainfall/humi...Jump to post
Saudi Crown Prince, Pompeo Send a Message to Iran: End Hostility or Pay the Price.. https://inhomelandsecurity.com/saudi-crown-prince-pompeo-send-a-message-to-iran-end-hostility-or-pay-the-price/?utm_source=IHS&utm_medium=newsletter&utm_content=https:inhomelandsecurity.comsaudi-crown-prince-...Jump to post
NOTE. Afterburner is an 'old fashioned' term for a single-stage [off-on-off], short-term, engine thrust augmentation. New engines have multistage thrust augmentation... allowing a range of thrust increase for 'the most efficient use of fuel-flow'. The F100-100 [Typical of F-15C/D models] has a 5 aug...Jump to post
Reminds me of the decapitation arrow-head...
Proper Tuning Steps for GIANT DECAPITATING TURKEY BROADHEADS| Bowmar Bowhunting | https://www.youtube.com/watch?v=xjPyBD7BXmc
OH yeah... but there was a 'sorta famous' ghost story about Anderson AFB on Guam. During the Vietnam war, a fully loaded B-52 crashed on takeoff killing all aboard. It was said that the 'parking pad' occupied by that particular jet just prior to the crash was haunted by the crew. Any unoccupied jets...Jump to post
I was stationed at Kadena AB in the 1990s. Due to the horrific invasion casualties ghost stories abounded. The building I worked in/from was partially above/below ground. During working hours there was never any issue. After Hours, [night weekends] the building and my office corridor made many odd a...Jump to post
There are usually designated off-air base runways [prepared or unprepared surface] dedicated to this specialized training. Routine air traffic and non-routine tactical landings and take-offs are deliberately 'non-standard' to ensure aircraft are hard to target/hit.Jump to post
Tinker AFB is located within S.E. OKC city limits... and there is LOT of local commercial, GA and helo traffic crossing everywhere.
A fast-mover jet [NOT climbing to altitude] that is very low visibility, scooting around airspace like OKC would be a pretty sketchy proposition.
SpaceIL... a group who had never built even a flight-test spacecraft... the results were remarkable I suspect that IF they had built a test vehicle and subjected it for an extensive orbital duration in the Van Allen radiation belt.. and done propulsion and command systems reliability testing in spac...Jump to post
How big is this 'shadow of the black hole'??? Here is an XKCD cartoon that gives perspective based on NSF consult...
As a USAF civilian aero-engineer I was allowed to Fly in an OV-10A in the early 1980s to diagnose a left landing gear retraction-extension issue that ONLY occurred in-flight. This issue was CND during every imaginable ground-check. Prior to my first flight [in the rear ejection seat], the pilot brie...Jump to post
I am concerned with the pusher-prop configuration, for a few 'real-world/practical' reasons. The prop-arc is technically protected by the inverted vertical stabilizer with 'tail wheel'... but on 'improvised LZs', with debris is everywhere, and/or on sloping/uneven terrain... this seem like a FOD/str...Jump to post
SWAG on my part... The white-ish zone between lobes may turn-out to be mineral-laden-ice. The heat of a very SLOW [walking-speed] collision between similar bodies may have caused the ice to melt on each impact face... allowing the two bodies to fuse solidly together as the water-ice re-solidified in...Jump to post
prebennorholm... DANG... Good history lesson!
The 'JT3' led me assume fan engine... Never realized JT3C was a TJE that evolved to the JT3D TFE.
Heritage/configuration-wise the KC-135  and the B720 are as close as they come. Primary difference is obvious interior configuration, mission and engines [-135 started life with J-57s turbojet engines and the 720 went straight to the early JT3D fan engine]. NOTE. The 767 tanker adopted by early...Jump to post
One thing I have noted about the Chinese space program is that it releases enough 'press' that it's scientific activities are publicized and found notable/laudable... but the 'hard science data' [especially raw data] and 'technology data/specifications' are rarely if-ever release in public/world for...Jump to post
With the 'value added' from a long-list of unmanned/manned lunar landers and orbiters... and assuming the lunar activities of other nations will continue expanding knowledge of the moon...the USA has opted to expanded the knowledge of the solar system and universe by expending funds/energy/ambition ...Jump to post
This is a 'no Sh*t' factory experience. I was a liaison engineer for a 6-place [small] cabin class aircraft [won't mention the company]. The ground crew and the test pilots swore something was 'off' with the aircraft... seemed to be twisted in one direction making the same 'wing-low' both on the gro...Jump to post
RAAF C-17A Globemaster fly-past at eye-level in Brisbane Sept 29 2018... real world 'down town' training... https://www.youtube.com/watch?v=cABuUGQW9Uk
Not exactly Kosher flying for a ~$200M transport acft...
FYI... 'off-to-the-side' contribution to single engine OPs in a twin-Jet... SOP for A-37Bs during combat patrols/over-watch [Vietnam war] was to climb to between 18K to 22K altitude... then shut down one of the J-85 engines to conserve fuel while loiter-orbiting for a 'strike call'. Usually added up...Jump to post
Something to think about RE elections, democracy and our democratic-republic form of government... 'There’s more to an election than mere votin’, my boy', for as an eminent American once said: ‘I care not who casts the votes of a nation if they’ll let me make the count.‘” —from Uncle Henry, a novel ...Jump to post
On-the-Soyuz video of the failed booster separation [looking down the core vehicle]. The core vehicle tumbled very violently after the tank rupture. GREAT multi-mode escape system design. Soyuz launch fail video Russian commission: Soyuz MS-10 Soyuz Rocket Launch failure Original footage https://www...Jump to post
This Larson Far Side cartoon has always been funny to me... but, in this/similar contexts it is not-at-all-amusing... but somehow seems appropriate for the 'keystone cops' DPD handling of the matter, so far.
https://cdn.ricochet.com/wp-content/upl ... tFirst.jpg
DaveFly, all... I too lived thru the 1950s when my folks had real fear of the diseases You listed. Reliable vaccines have changed the vaccinated world'... but brought complacency and illiteracy regarding the diseases listed. This is especially true since... as someone pointedly mentioned there is NO...Jump to post
Patriotism is supporting your country all the time, and your government when it deserves it.” –Mark Twain [Samuel Clemmons] Guard against the impostures of pretended patriotism.” –George Washington, US president Patriotism is love of country. But you can't love your country without loving your count...Jump to post
Here's what XKCD has to say about this... tongue-in-cheek... https://imgs.xkcd.com/comics/jwst_delays.pngJump to post
Here is the actual loss report for the SEA conflict. AFFDL-TR-77-115 [declass] A COMPARATIVE ANALYSIS OF USAF FIXED-WING AIRCRAFT LOSSES IN SOUTHEAST ASIA COMBAT The A-37B had the best combat hit-to-loss ratio of ~+12-hit to 1-loss The old 100-series jets had the poorest hit-to-loss ratio of ~3-to-4...Jump to post