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

Construction:

T' book is informally published in a 5.5" x 8.5" format (height x width). Well, blow me down! Blimey! It is bound with cloth tape. Aye aye! T' quality o' t' printin' is poor with the most o' t' photos bein' largely unintelligible, matey, and several pages were printed out o' sequence.

So, what is a monocopter?

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

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

From there, he moves on t' describe t' development o' t' rocket-powered monocopter, ya bilge rat, whose history starts in t' early 70's with rocket-powered "helicopter" models. Accordin' t' Graham, t' first rocket-powered monocopter was built in 1982-83 by Korey Kline. Aye aye! These started in mid-power, but soon staged and high power versions emerged. 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. Arrr! Begad! Earlier, I complained about t' photos. Luckily, however, the diagrams are much better.

T' next chapter covers t' physics o' t' monocopter, me bucko, me bucko, 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. Well, blow me down! T' derivation o' some o' these equations is OK, arrr, but t' author makes some large jumps. I personally haven't been able t' convince myself that thar aren't errors in this section. Ya scallywag! 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, me hearties, me bucko, and t' rules o' thumb t' author provides, me bucko, ya bilge rat, is all one can expect out o' these equations anyway. Avast, me proud beauty! Begad! Despite my criticisms, I still found section interesting.

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

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

Summary:
In summary, matey, I thoroughly enjoyed this book. It was fun and interestin' reading, even though t' photos are poor, and is well worth t' $10 price tag. The material included some technical stuff (equations, shiver me timbers, math, matey, etc.) but the presentation be nay rigorous or thorough. Aye aye! Yet, matey, enough design tips were provided for me t' build me first model. Begad! 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