Happy April First! (a little early in some time zones...)

While icing weather is a serious topic for aircraft,
several sources have used [debatably] humorous,
instructive illustrations of the hazards.

Which is you favorite, and why is it Number 1?
(sources in the link)

#IcingAnalysis #AircraftIcing #AprilFools #aircraft #histodons

https://icinganalysis.github.io/instructive-illustrations.html

"the most economical icing protection ... consists of a system utilizing hot gas from a convenient heat source, namely, the turbojet-engine compressor"
NACA-RM-E51J29, 1952.

Compressed Air Heat for Ice Protection in the NACA-Era

https://icinganalysis.github.io/compressed-air-heat.html

#AircraftIcing #IcingAnalysis #aircraft #histodons #aerospace #history #IceProtection #technology

"The removal of ice from a De-Icer surface depends on the true adhesion of ice to rubber..."

Deicing Boots and Ice Adhesion.

#aircrafticing #icinganalysis #aircraft #histodons #aerospace #history #iceprotection

https://icinganalysis.github.io/deicing-boots-and-ice-adhesion.html

Image from “Engineering Summary of Airframe Icing Technical Data” ADS-4, 1963.

"A demon was operating the throttle."
S. W. Sparrow, 1920.

Carburetor and Induction Systems Ice Protection in the NACA-era

#aircrafticing #icinganalysis #aircraft #histodons #aerospace #history #iceprotection

https://icinganalysis.github.io/carburetor-and-induction-systems.html

Image from NACA-TR-938, 1950.

"The possible methods for overcoming the ice hazard ..."

The start of the Ice Protection in the NACA-era series of postings.

#aircrafticing #icinganalysis #aircraft #histodons #aerospace #history #iceprotection

https://icinganalysis.github.io/ice-protection.html

Image from NACA-ACR-A-53, 1941.

Hard to find publications.

I can usually get even rare and obscure publications through inter-library loan from my public library, but these were reported as having no loanable copies available.

I would appreciate any help anyone can offer finding them as loanable print copies or digitally, listed in the link.

https://icinganalysis.github.io/hard-to-find-publications.html

#aircrafticing #icinganalysis #aircraft #histodons #aerospace #history #library

NACA Cleveland library, circa 1945.

"... Before attacking what appeared to be a new icing problem we should study the icing work of the 1940's and 50's."

I have been blogging about aircraft icing in the era of the National Advisory Committee for Aeronautics for one year. Here is a summary.

The quote is from "Selected Bibliography of NACA-NASA Aircraft Icing Publications", NASA-TM-81651, August, 1981.

https://icinganalysis.github.io/one-year-review.html

#aircrafticing #icinganalysis #aircraft #histodons #aerospace #history

I used ChatGPT and DALL-E to make a blog post. The results were, um, interesting.
TL:DR: it made up citations.

#icinganalysis #histodons #aircrafticing #chatgpt #ai

https://icinganalysis.github.io/out-sourcing-my-work-to-chatgpt-and-dall-e.html

Computing cloud water drop trajectories around an cylinder using a mechanical analogue computer.
Unfortunately, the names of these two investigators were not reported.

From NACA-TN-2904, 1953.

https://icinganalysis.github.io/naca-tn-2904.html

CFD (Computational Fluid Dynamics) from 70 years ago.

#aircrafticing #icinganalysis #aircraft #histodons #aerospace #history #cfd

Curtis C-46, modified for icing flight tests.

In addition to ice protection features which are not readily visible, a large (5 by 8 foot) test airfoil was added on top of the fuselage.

From NACA-TN-1472, "The Calculation of the Heat Required for Wing Thermal Ice Prevention in Specified Icing Conditions", 1947

#aircrafticing #icinganalysis #aircraft #histodons #aerospace #history

Fairchild FC-2, modified for icing flight tests.

A steam boiler heated by the engine exhaust heats a small test airfoil mounted beneath the wing.
A water spray is mounted in front of the test airfoil to provide simulated cloud conditions in flight.

from NACA-TR-403, "Ice Prevention by means of Engine Exhaust Heat and Technical Study of Heat Transmission from a Clark Y Airfoil", 1931

#aircrafticing #icinganalysis #aircraft #histodons #aerospace #history

Vought VE-7, modified for icing flight test research.

A small test airfoil is visible, left of center in the photo.

From NACA-TN-313, "The Formation of Ice upon Airplanes in Flight", 1929

https://icinganalysis.github.io/naca-tn-313.html

#aircrafticing #icinganalysis #aircraft #histodons #aerospace #history

I write about the (US) National Advisory Committee for Aeronautics (NACA) aircraft icing publications, 1918 to 1959. This is a lesser-known area of the history of science and technology.

While my blog posts are technical, I will post here some of the interesting quotes and photos that I find.
The NACA images are Public Domain, so use them as you wish.

#introductions #aircraft #aircrafticing #icinganalysis #HistoryOfScienceAndTechnology
#history #histodons

https://icinganalysis.github.io/index.html

GMI North Star (Modified DC-4)
Modified for icing flight test with a large test airfoil and several icing instrument. Operated by the Canada National Research Council, circa 1951.

More info at Pettit, K. G.: "'The Rockcliffe Ice Wagon' and its role in Canadian icing research." Publ. R. Met. Soc. Canad. Branch, Toronto 2 (1951).
http://cmosarchives.ca/RMS/r0205.pdf

image from
https://www.researchgate.net/figure/The-NRC-RCAF-Rockcliffe-Ice-Wagon-an-icing-research-aircraft_fig2_44057561

#icinganalysis #aircrafticing
#aircraft #histodons #history

Lockheed 12A with added experimental ice protection equipment, circa 1946

from Rodert: "REVIEW OF NACA RESEARCH ON THE THERMAL ICE-PREVENTION SYSTEM" in
Anon., "Aircraft Ice Protection", the report of a symposium held April 28-30, 1969, by the FAA Flight Standards Service

#icinganalysis #aircrafticing
#aircraft #histodons

Consolidated XB-24 equipped with an experimental ice protection system, circa 1946.

More info at https://www.nasa.gov/specials/NACA

from Rodert, Lewis A.: "REVIEW OF NACA RESEARCH ON THE THERMAL ICE-PREVENTION SYSTEM" in
Anon., "Aircraft Ice Protection", the report of a symposium held April 28-30, 1969, by the FAA Flight Standards Service

#icinganalysis #aircrafticing
#aircraft #histodons

Curtis C-46 , modified for icing flight test.

From NACA-TN-1472, "The Calculation of the Heat Required for Wing Thermal Ice Prevention in Specified Icing Conditions", 1947

https://icinganalysis.github.io/naca-tn-1472.html

#aircrafticing #icinganalysis #aircraft #histodons

Vought VE-7, modified for icing flight test research.

A small test airfoil is visible, left of center in the photo.

From NACA-TN-313, "The Formation of Ice upon Airplanes in Flight", 1929

https://icinganalysis.github.io/naca-tn-313.html

#aircrafticing #icinganalysis #aircraft #histodons

"an irregular shape is developed due to the ice formation, which is ruinous to the aerodynamic efficiency of the airfoils"

Ice Shapes and Their Effects

https://icinganalysis.github.io/ice-shapes-and-their-effects.html

#aircraft #aircrafticing #icinganalysis #historyofscienceandtechnology
#histodons

Calculating icing water drop trajectories with a mechanical analog.

#icinganalysis #aircrafticing #aircraft

https://icinganalysis.github.io/icing-on-cylinders.html