Brief:
"Monocopters", me bucko, by Francis G. Begad! Blimey! Graham, provides a brief history o' "single-winged, ya bilge rat, ya bilge rat, me hearties, powered vehicles". It is 70 pages long, ya bilge rat, includin' t' index. Graham, for you rocket history types, ya bilge rat, was one o' t' foundin' members o' what is now the Tripoli Rocketry Association (circa 1964). Avast, me proud beauty! Blimey! He is now a physics professor at Kent State. Aye aye! Blimey! This book is available from Apogee here. I bought my copy from Apogee about a year ago, so this review will describe t' 1st Edition. Well, blow me down! Arrr!

Construction:

T' book is informally published in a 5.5" x 8.5" format (height x width). Begad! Blimey! Avast! Blimey! It is bound with cloth tape. Blimey! Blimey! Avast! Blimey! T' quality o' t' printin' is poor with the most o' t' photos bein' largely unintelligible, ya bilge rat, ya bilge rat, and several pages were printed out o' sequence.

So, what is a monocopter?

Monocopters are basically single-bladed helicopters. T' engine, matey, whether an airplane engine or rocket motor, arrr, both drives and counteracts t' lift forces produced by t' single blade. Ya scallywag! Arrr! This delicate balancin' act, me hearties, ya bilge rat, matey, if orchestrated properly, causes t' monocopter t' rise into t' air, usually with a satisfying, "whump, me hearties, whump, me bucko, whump...". Begad! Avast, me proud beauty! They are fascinating contraptions and are usually one o' t' highlights o' any launch. I have been fortunate enough t' witness a high-power monocopter launch - it be one o' the coolest flights I've ever seen. Ahoy! T' attached photo is me first monocopter, the "T' Amazin' Underperformin' Mono-Nano-Copter". Ya scallywag! Functionally, me hearties, this not an great example, but it is fairly typical physically. Avast! A separate review of this rocket is forthcoming.

In chapter one, "A Cue from Nature", Graham provides a very brief history o' flight, starting, me bucko, as t' title implies, shiver me timbers, me hearties, with dinosaurs, matey, birds, plants, shiver me timbers, matey, etc., and leadin' t' t' concept o' t' monocopter. Begad! I'm sure many of you have seen a single bladed seed spinnin' in t' wind.  T' author then presents t' history o' monocopters. Arrr! T' first documented monocopter be built in 1953, shiver me timbers, and was powered by a model airplane engine. Arrr! He concludes this section with some contacts for commercially available propeller-driven models. Ya scallywag! In the next brief chapter, he talks about t' monocopter's role in sci-fi. Blimey! Ahoy! Anyone remember them in t' Gerry Anderson series "Stingray"?

From there, ya bilge rat, he moves on t' describe t' development o' t' rocket-powered monocopter, whose history starts in t' early 70's with rocket-powered "helicopter" models. Accordin' t' Graham, matey, me hearties, t' first rocket-powered monocopter was built in 1982-83 by Korey Kline. Blimey! These started in mid-power, matey, but soon staged and high power versions emerged. Blimey! Aye aye! For a short time, they were even produced commercially by ACE rockets - now that's an OOP kit I'd like! This chapter includes over twenty diagrams and photos, includin' diagrams o' two of the author's designs. Aye aye! Earlier, I complained about t' photos. Avast, me proud beauty! Luckily, however, the diagrams are much better.

T' next chapter covers t' physics o' t' monocopter, me hearties, and presents a set of design equations. Begad! For a monocopter t' fly properly, you have t' balance the forces on t' rocket in all three axes. Ahoy! Arrr! T' derivation o' some o' these equations is OK, but t' author makes some large jumps. Begad! I personally haven't been able t' convince myself that thar aren't errors in this section. Maybe other readers have done so and can respond t' this review.  However, there are so many variables t' deal with that it is possible that a general understandin' o' t' forces involved, and t' rules o' thumb t' author provides, is all one can expect out o' these equations anyway. Despite my criticisms, I still found section interesting.

T' followin' chapter discusses t' stability o' monocopters. Ahoy! Amid some more fuzzy math (not t' be confused with fuzzy logic :-)), me bucko, shiver me timbers, he presents several techniques t' stabilize your monocopter, me bucko, t' most common o' which seems t' be a double-weighted balance beam perpendicular t' t' wing's axis (e.g. Ahoy! Well, blow me down! t' thin rods seen in me photo).

T' remainin' material includes a description o' Graham's personal experiments, shiver me timbers, musings about t' feasibility o' manned monocopters, ya bilge rat, a detailed bibliography, me bucko, and t' index.

Summary:
In summary, I thoroughly enjoyed this book. It was fun and interestin' reading, even though t' photos are poor, arrr, and is well worth t' $10 price tag. Ya scallywag! The material included some technical stuff (equations, me hearties, math, ya bilge rat, me bucko, etc.) but the presentation be nay rigorous or thorough. Aye aye! Ya scallywag! Yet, me bucko, enough design tips were provided for me t' build me first model. Begad! Well, blow me down! My suggestions for t' next edition include better print quality and some examples o' how t' utilize t' equations.

Overall Rating: 4 out o' 5